What are the symptoms of a bad EGR valve?

A rough idle upon starting the engine (that is, when the engine is cold) and sometimes at a stop light or while looking for a spot in a parking lot (that is, at low engine speeds in a warmed-up engine). Stalling when the engine idles. Increase in fuel consumption.

What does the EGR valve do on a GM 4.3L?

More GM 4.3L, 5.0L, 5.7L Tutorials. As you’re probably already aware, the EGR valve’s job is to let a metered amount of exhaust gas (that is oxygen free) into the intake manifold to reduce the amount of oxygen entering the engine.

Where is the vent port on an EGR?

In case you’re wondering, the letter J is embossed above the vacuum port on the throttle body. The other side of the EGR vacuum solenoid has 2 ports. One is a vent port (that vents vacuum to the atmosphere) when the engine is idling.

What causes black smoke from the EGR valve?

2. Black Smoke from Exhaust. If the EGR valve stays open at all times and the exhaust fumes are being fed to the engine constantly, the engine gets deprived of oxygen. With too much fuel burning and less oxygen, a black smoke gets produced and escapes from the exhaust pipe especially when the car is idle.

Where is the EGR valve located on a car?

It usually has a diameter of three inches and is located at the side of the engine but towards the upper part. On these past models, there is a vacuum hose that runs the EGR valve. The tube connects the upper part of the EGR to the carburetor. The valve’s metal disk contains a vacuum diaphragm, a plunger, and spring.

When is the best time to clean an EGR valve?

This driving pattern doesn’t allow the engine to reach operating temperature and run long enough to remove harmful carbon deposits. A cleaning EGR valve job doesn’t have to wait until engine performance issues appear or the Check Engine light comes on.

Why is the oxygen sensor on my car not working?

Because the EGR is stuck open, the excessive exhaust gas swamps any marginal oxygen increase. The result is inadequate fuel and oxygen in the intake air mixture necessary for reliable combustion. Many newer vehicles with VVT (Variable Valve Timing) don’t have an EGR.

Where are the EGR Jets in the intake manifold?

A more radical design, implemented in a few models, was the replacement of the valve with EGR jets at the bottom of the intake manifold. Some newer high-efficiency engines, for example those with variable valve timing (VVT), don’t even use an EGR system. If playback doesn’t begin shortly, try restarting your device.

How does an exhaust gas recirculation ( EGR ) valve work?

The EGR (Exhaust Gas Recirculation) valve helps lower the car’s exhaust emissions (gases from the tailpipe). It recirculates the portion of the gasses coming out of the engine by putting in back into the intake manifold, where the engine can burn it again, thereby reducing the emissions. The EGR …

Can a car pass a smog test with a faulty EGR valve?

The EGR valve is an important emissions component, especially for vehicles in states with strict emissions regulations. You won’t be able to pass a smog test with a faulty EGR valve.

Why is my EGR valve not working properly?

Chucks of carbon may also prevent the EGR valves from sitting as they should. The issue causes a rough idle, and in severe cases, the automobile might stall. This is because the exhaust gas does not re-circulate to the engine at idle, and it only happens when the motor exceeds the 30mph.

What does EGR stand for in exhaust valve?

EGR Valve stands for exhaust gas recirculation valve, which breaks down exactly what it does. Recirculating the exhaust does a few things for overall performance. First, it optimizes the fuel to air ratio without pulling in extra air from the intake.

Why does my engine make a knocking noise when the EGR is closed?

Knocking noises from the engine can be caused if the EGR is constantly closed. This is because at low rpm the fuel ignites early when it meets the high temperature. Detonations are also common as a second ignition can occur after the normal ignition.

How does an EGR valve work on a diesel engine?

When you slowly and efficiently come to a stop, the valve also closes and stops the flow of exhaust gases. The process continues so long as the engine is operating. Once you shut off the engine, the valve also closes and stays in that position. Diesel and gasoline-powered engines can use an array of EGR valve configurations.

Why does my car make a knocking noise when I Turn on the engine?

The engine is accelerating or lugging under a load. This allows intake vacuum to suck some exhaust in; through the (EGR) valve to dilute the air/fuel mixture slightly. This lowers combustion temperatures and prevents engine spark knock.

Common Symptoms Of A BAD EGR Valve. The following are the most common symptoms that a Ford (or Mercury or Lincoln) car or truck will usually experience when there’s a fault in the EGR System: Car or truck runs fine, but the check engine light (CEL) is on with an EGR Valve Fault Code: P0401 EGR System Flow Insufficient.

What are the symptoms of an idle air control valve ( IAC )?

Another symptom of a potential issue with the idle air control valve (IAC) is; an illuminated Check Engine Light. If the engine control module detects an issue with the idle air control valve circuit or signal; it will set off the Check Engine Light to notify the driver that there’s an issue.

When to test the Ford EGR valve solenoid?

The following are the most common symptoms that a Ford (or Mercury or Lincoln) car or truck will usually experience when there’s a fault in the EGR System: Car or truck runs fine, but the check engine light (CEL) is on with an EGR Valve Fault Code: P0401 EGR System Flow Insufficient. P01406 EGR Valve Pintle Position.

How does the exhaust gas recirculation ( EGR ) circuit work?

It uses engine vacuum to operate the EGR valve, which opens and closes to allow the exhaust gases into the intake. It receives 12-volt power from the powertrain control module when operating conditions — engine running and battery voltage above 12 volts — are met.

When does the idle air control valve change?

When the engine is running but the vehicle is not moving, this means the engine is idling. During this time, the number of revolutions per minute (RPM) inside the engine will change. The idle air control valve is responsible for managing the engine idle speed.

When to set code 32 on GM OBD?

The ECM monitors the Baro Sensor circuit. Code 32 can set when the circuit is open or shorted. 32 – Barometric Pressure Sensor Circuit fault. If the ECM monitors EGR operation. Code 32 can be set if the EGR system is not performing up to factory specifications.

Where is the EGR valve on a carburetor?

The tube connects the upper part of the EGR to the carburetor. The valve’s metal disk contains a vacuum diaphragm, a plunger, and spring. Most have an electronic-vacuum EGR valve that is placed inside a cylinder or a small block.

Why is the vacuum hose stuck in the EGR valve?

This is a problem, since vacuum should not be present when the engine is idling. This could be caused by one of two possibilities… either the EGR solenoid is defective or the vacuum hose is attached to the wrong port on the EGR solenoid.

How does the EGR valve work on a 1984 Corvette?

The 1984-1996 EGR valve works like this: the EGR valve’s pintle should rise when applying vacuum with a hand operated pump. 1984 EGR valve operation can be felt with your fingers as vacuum is applied. We use a mirror to check the 1985-1991 EGR valves’ operation.

Is the EGR valve a positive or negative valve?

It may sound more logical to call it a positive pressure valve but that is way the industry recognizes its operation. To start with let’s understand the influence the engine has on the EGR valve. On one side of the pintle we have exhaust gas and intake manifold vacuum on the other side.

How do you clean the pintle seat on an EGR corvette?

An EGR’s pintle seat can be removed for cleaning. Here the valve is placed in a vise and the upper part of the valve is twisted counter-clockwise. Spraying some throttle body cleaner into the seat’s outer portion helps it rotate easier. It is better yet to soak the entire end in the throttle body cleaner.

How did exhaust gas recirculation ( EGR ) come about?

Exhaust Gas Recirculation (EGR) came about in 1975 when catalytic converters were introduced. The inert exhaust gas was used to quell the increased heat in the engine’s cylinders from the lean fuel mixtures required to keep the catalytic converters from melting down.

These symptoms include: Your vehicle might start to experience a rough idle; this means that your vehicle will start chugging or vibrating while idling. This will cause you to have a rough driving experience, and you may likely bounce off from your driver’s seat a little bit.

What should resistance reading be for EGR valve?

For an electric EGR valve, you need to have a multimeter; this device will be used to do a resistance reading, referred to as an ‘ohms test.’ Once connected, you should see a reading of about 20 to 24 ohms. You can check the repair manual of your vehicle for this.

Can a bad MAP sensor cause engine failure?

MAP sensor on footwell inside engine compartment. A bad manifold absolute pressure (MAP) sensor can upset fuel delivery and ignition timing. Depending on your vehicle model, your engine might experience one or more of these performance problems: However, these symptoms are not exclusively symptoms of a failed MAP sensor.

Can a bad vacuum hose cause a bad MAP sensor?

For example, in many applications a leaking vacuum hose or a bad throttle position sensor (TPS) may cause a trouble code that points to a faulty MAP sensor. Troubleshooting the sensor is the only way to determine whether the sensor or part is actually bad. On some models, you only need to remove a couple of screws to get to the sensor.

What can I use to clean an EGR valve?

This is a home experiment and an unbiased use of JLM Diesel Air Intake & EGR Cleaner. Similar products are available. This product is designed to dissolve carbon deposits, gum and varnish build up. It should restore air flow to the engine thus improving power and acceleration while reducing exhaust smoke.

What are the symptoms of a bad manifold pressure sensor?

The symptoms of a failing manifold pressure sensor are similar to the problems of low compression or improper fuel injection. These problems need to be detected beforehand, for avoiding any severe damage to the engine and its performance. So, here are certain defects of a bad MAP, which you can look for,

Why is my exhaust gas recirculation valve not working?

After miles of service, the exhaust gas recirculation (EGR) system — especially the EGR valve — will lead to engine performance problems due to carbon buildup, components mechanical problems, or vacuum hose leaks.

Can a vacuum controlled EGR valve be used?

Here, we’ll deal with vacuum controlled EGR valves found in old model vehicles and some newer models using hybrid (vacuum-electronic) controls.

When does my Chrysler Town and Country shut down?

Asked by Bigred305Aug 29, 2013 at 08:29 AM about the 1996 Chrysler Town & Country LXi Question type: Maintenance & Repair My Town & Country shuts down while I am driving. There is no pattern to when it shuts down. I may drive 20 miles with no problem and other times it will shut down 5 or 6 times within that distance.

How to change the EGR valve on a Chrysler Town and Country?

Tighten the two cylinder head-adaptor mounting bolts using the wrench or ratchet and socket. Tighten the two pipe mounting bolts using the wrench or ratchet and socket. Plug the electrical connector to the EGR transducer. Plug the vacuum hose to the top of the EGR transducer.

What causes a failure code on an EGR system?

Another common problem causing failure codes in this system is that the tip of the valve will become irregular shaped from carbon deposits. When this happens it no longer creates a perfect seal. This can allow exhaust gas to continue to flow when not called for by the computer. An example would be at engine idle or when the vehicle is cold.

Why does my car make a loud noise when I start the engine?

The engine tone will be deeper and it’s common to hear periods of engine backfiring when you have an exhaust leak somewhere in the exhaust system. What’s the cause of this sound? When your vehicle sounds as if it turned up the volume on the exhaust by a factor of three to five, it’s usually caused by a leak somewhere in the exhaust system.

Where does the exhaust noise come from in a car?

Check out the following symptoms along with some of the more commonly seen causes. There is a loud exhaust noise which may be coming from either the front or rear of the vehicle. Determine whether the noise is coming from the front or rear of the exhaust system. Do this by parking the vehicle securely on level ground, with parking brake applied.

When there is a problem with the EGR Valve, the check engine light or EPC(VW) light may occur on your dashboard. The two main issues EGR valves face are that, either the valve stays open or it shuts completely. Here are some common symptoms you will notice if you have a bad EGR valve.

How much does it cost to replace an EGR valve?

For newbies, we recommend that you take your car to an auto-specialist who can diagnose the problem effectively and provide you with a solution. On average, the EGR valve replacement should cost somewhere between $200 to $900. The component itself costs around $70 to $490. It’s often the repair time that is expensive.

What’s the best way to clean an EGR valve?

STEP 4: EGR Valves are made up of various hoses along with the valve. You will want to spray all it it thoroughly and use a suitable brush to remove tough residue. Do NOT spray the electrical sensors with the cleaner. If the sensors are corroded or dirty (if they are old, they probably will be), use an appropriate electrical cleaner.

Where is the EGR valve on an engine?

EGR Valve Explained. The exhaust gas recirculation valve is an emissions-control device sitting between the exhaust manifold and the intake manifold. The EGR valve is typically closed when you start your engine.

What are the symptoms of a failing EGR valve?

What are the symptoms of a failing EGR valve? A faulty EGR valve can cause problems with the flow and operation of the EGR system leading to performance issues including a reduction in power, reduced acceleration and decreased fuel efficiency. It can also cause vehicle emissions to increase.

How many years does an EGR valve last?

The EGR valve seems to have a lifespan of around 10 years of service. While replacing an EGR valve isn’t hard, yours might not be dead—just too filthy with carbon and gunk to function properly.

Why does my Subaru check engine light come on?

by Alibaster Smith. The Subaru check engine light comes on when there is a problem with the Subaru’s emissions control system. The Subaru’s computer, called an ECU, generates fault codes that pertain to various sensors on the vehicle. If one of these sensors fails, it will trigger a fault code.

What does a fault code on a Subaru mean?

The Subaru’s computer, called an ECU, generates fault codes that pertain to various sensors on the vehicle. If one of these sensors fails, it will trigger a fault code.

How do you reset check engine light on Subaru Outback?

Wait 5 minutes, then reconnect the cable and tighten the retaining nut. Start the engine and wait for the Subaru’s computer to reset the check engine light.

How to know if your EGR valve is stuck or malfunctioning?

How to Know If Your EGR Valve Is Stuck or Malfunctioning. The EGR valve, or Exhaust Gas Recirculation valve, is a vacuum controlled valve which allows a specific amount of your exhaust back into the intake manifold. This exhaust mixes with the intake air and actually cools the combustion process. Cooler is always better inside your engine.

What do you need to know about EGR codes?

A basic explanation of the valve works would probably help with the understanding of the diagnosis and repair of EGR codes. Exhaust gas recirculation is necessary for emissions purposes. Unfortunately, when it malfunctions it can actually push emission levels off the chart.

What should I do about carbon build up around the EGR valve?

If there is a lot of carbon build up around the EGR valve, you may also want to just save yourself some time and replace it with a new one. Clean out the entry port. The entry port is where the valve tubes connect to the engine (usually the intake manifold) while the EGR valve is off.

When to replace the EGR valve on a diesel engine?

The EGR valve on a diesel engine usually gets a lot more dirt in it, and it has to be replaced and cleaned more often. The carbon build up can also destroy the EGR valve and you have to replace it more often. A lot of people, reprogram the EGR valve to not function to reduce the amount of carbon build up in the engine.

How to clean a blockage in an EGR battery?

You will need to clean the EGR valve of the blockage using the following steps: 1 Disconnect battery 2 Remove sensors or clips 3 Loosen bolts holding the EGR valve 4 Use a EGR or Carburetor Cleaner to spray the valve and hoses 5 Reconnect the battery

Why did I replace my EGR valve after code p0406?

Re: Replaced egr valve after code p0406 and still getting… The code problem is related to the EGR valve but not necessarily the valve itself. There is a high input in valve position sensor that can be the sensor —wiring short to positive and ECM. Check the connections for moisture and are not shorting out.

For example, if the EGR valve does not close all the way or open all the way when it is supposed to, then the computer will detect something is wrong and activate the Check Engine Light. 2) Poor Engine Performance – A bad EGR valve is going to cause performance problems with the engine.

How does EGR valve work with EGR system?

The EGR valve works in conjunction with the EGR system in order to pull this off. When the EGR valve opens, it allows emissions to enter the EGR system which is where the emissions are controlled.

Replacement Cost. The cost to replace an EGR valve is anywhere from $180 to $460. The parts costs alone will be somewhere between $139 and $349. The labor costs alone will be between $50 and $120, depending on the mechanic’s hourly rate. The good news is that it should not take more than one hour for the mechanic to perform this replacement job.

Where is the EGR valve on a 3.6 Cadillac?

The hose for the EGR valve connects to the engine just below the upper, large, radiator hose. The EGR hose is smaller than the radiator hose and easy to spot. Follow the hose back on the side of the engine and you will find the EGR valve. Where is the E.G.R. valve on a 3.6 Cadillac?

Where is the vacuum diaphragm on an EGR valve?

The hose connects the top of the valve to the throttle body or carburetor. The valve’s metal disk houses a vacuum diaphragm, spring, and plunger. Later models come equipped with electronic-vacuum EGR valves inside a small block or cylinder.

What happens when the engine is running at low rpm?

When the engine is running at low RPM, lower temperatures in the combustion chambers prevent all the fuel from burning, so the flow of unburned hydrocarbon gases coming out of the tailpipe increases significantly. The Check Engine light (or Malfunction Indicator Light, MIL, depending on your model) illuminates on your dashboard.

Why does my engine stall when the EGR is open?

This is because the temperature is lower so fuel does not burn at the optimal temperature and as a result is less efficient. Stalling when the engine idles like a rough idle is usually caused when the EGR valve is permanently open and is constantly letting exhaust gases into the EGR system.

Can a check engine light get clogged up?

The EGR valve can get clogged up or fail entirely. If you’re even slightly mechanically inclined, you can remove the valve, clean it up, and reinstall it in a relatively short amount of time. If the valve needs to be replaced, expect to pay at least $125 for a brand-new, OEM-quality unit.

What should I do if my EGR light is not working?

The repair of this condition is removal of the EGR valve and inspection of the passageway to check for a blockage. Each model vehicle has different procedures for clearing the passageway due to many different configurations of the system. Some Fords have a removable tube.

Why is there an EGR code on my Ford?

However, we often find EGR codes on Ford products caused by inexpensive plastic parts that falsely report position to the control module. Several technical service bulletins for a wide variety of different makes and models have documented different problems associated with the EGR valve system.

What happens when your EGR valve fails to open?

The “check engine” indicator will light up on the dashboard when your EGR valve fails. This will happen the moment your vehicle’s central computer senses that the valve is in an abnormal position. For instance, if the EGR valve fails to close or open as it should, the computer will detect an issue and activate the “check engine” light.

What happens to your car when you idle?

Your vehicle might start to experience a rough idle; this means that your vehicle will start chugging or vibrating while idling. This will cause you to have a rough driving experience, and you may likely bounce off from your driver’s seat a little bit. When your engine idles, you might also notice a misfire when holding the steering wheel.

What happens when your engine valve is clogged?

When your vehicle’s engine valve is clogged, making it unable to close or open, this will cause the exhaust gas to flow into the intake manifold of your vehicle before it is needed by the engine. This causes poor acceleration while driving.

What happens when you have a bad EGR valve?

The engine will have a rough idle when the EGR valve is faulty because it will remain in an open or closed position. This implies that too few or too many exhaust gases are entering the chamber, and this is why the engine is idling.

What causes a car to run at a rough idle?

A PCV valve leak can cause the air-fuel mixture to run too lean, and this will cause a rough idle. Proper periodic servicing of the PCV valve will prevent this situation from occurring.

How do you change the EGR valve on a Dodge Ram?

Push the electrical plug back into the EGR valve plug, and lock the plug with the red tab. For the 4.7/3.7, you will need to re-install the resonator box. To clear the check engine light, disconnect the negative battery cable with a 10mm wrench for five minutes. Figure 6. The 4.7/3.7’s new EGR valve has been installed.

How to repair a broken EGR carburetor valve?

How to Repair a Broken EGR Valve. 1 Disconnect battery. 2 Remove sensors or clips. 3 Loosen bolts holding the EGR valve. 4 Use a EGR or Carburetor Cleaner to spray the valve and hoses. 5 Reconnect the battery.

Can a Clogged EGR valve cause poor performance?

If the car can’t recirculate those exhaust gases, it will continue to become more clogged up. This will cause car inefficiency and poor performance. Think of blowing through a straw.

What causes a rough idle in a direct injection engine?

In direct injection engines the fuel injector delivers gas right into the cylinder, so the valves never get fuel spray. After shutdown, crankcase vapors rise to the top of the engine and settle on the intake valves where they condense and harden. The result is carbon buildup that can cause a rough engine idle.

What should I do if my car idles for no reason?

When looking for solutions for a rough engine idle; make yourself a checklist to narrow down the possibilities. While a rough idling engine may seem to be a simple inconvenience; it often indicates a deeper problem within the engine. The vehicle should be inspected and repaired as soon as possible.

What to do if your exhaust gas recirculation valve fails?

The fix is to service the valve regularly and make sure that it is clean and fully operational. This is the Exhaust Gas Recirculation valve, which sends some of the engine’s exhaust gases back through the intake system to lower the vehicle’s emissions. Over time, the EGR valve can fail in the open or closed position.

Why does my check engine light light up when I idle?

This is primarily to make sure that the emission controls are working properly, but a rough idle can cause a malfunction code to be sent to the computer. If this happens, your “Check Engine” light on the dashboard will light up.

What does it mean when your car is idling?

Let’s start with a definition of idling. When you start your engine, and just let it run without pressing on the accelerator or putting it into gear, that is idling. A properly idling engine should be able to maintain a steady but low rate of revolutions, somewhere in the vicinity of 1,000 RPM.

1. Engine performance issues. One of the first symptoms of a problem with the EGR valve is engine performance issues. A clogged or malfunctioning EGR valve can disrupt the vehicle’s air-fuel ratio, which can cause engine performance issues such as a reduction in power, acceleration, and even fuel efficiency.

Can a cracked EGR tube cause a rough idle?

Cracked or broken EGR tubes will create an exhaust leak which can cause a rough idle. The idle may surge or stay higher and lower than normal, and may be especially noticeable after cold starts.

What happens if the gaskets on the EGR cooler fail?

If the EGR cooler gaskets fail, or the cooler gets damaged for any reason, it can cause an exhaust leak to develop. An exhaust leak may be heard as an audible hissing or tapping sound coming from the front of the vehicle. This will reduce the efficiency of the EGR system, and negatively affect engine performance. 3. Check Engine Light comes on

What kind of noise does an EGR make?

If the EGR tube breaks or comes loose, it can cause rattling noises as a result of the metal tube vibrating. The noise may be quiet at idle, and become more noticeable when accelerating.

How is the EGR valve controlled in a car?

It is a straightforward system which utilises a vacuum to switch the EGR valve from closed to open. The vacuum is often regulated by a computer-controlled solenoid. Most modern cars utilise an electronically controlled EGR which is controlled by the vehicle’s engine control module (ECM).

What are the symptoms of a bad exhaust gas recirculation?

Symptoms of a Bad or Failing Exhaust Gas Recirculation (EGR) Valve. 1 1. Engine Performance Issues. Another common sign of a bad EGR valve is engine performance issues. A clogged or malfunctioning EGR valve can disrupt 2 2. Rough Idle. 3 3. Pinging or Knocking Soud During Acceleration. 4 4. Check Engine Light Comes On.

How does the exhaust gas recirculation valve work?

When to replace or clean the EGR valve?

Or, the EGR position sensor can fail, causing a check engine light. If your car is running fine at idle and you don’t have a check engine light, there’s no need to replace or clean an EGR valve. Some shops recommend periodic cleaning. I think that’s a waste of money.

Is there a position sensor on an EGR valve?

Vacuum controlled valves don’t have a position sensor to monitor how much the pintle actually opened or closed compared to how much the engine computer wanted it to open or close. When car makers converted over to electrically operated EGR valves, they installed position sensors to get feedback as to actual versus commanded position.

Why does the fuel management light stay on when the EGR is open?

This means the amount of hydrocarbon gases emitted from the tailpipe increases significantly producing a fuel smell. Your engine management light may stay on once your car detects an issue with the EGR valve. This could be caused when the EGR is either constantly closed or open.

This, in turn, reduces the car’s performance and increases pollution as well. When there is a problem with the EGR valve, the check engine light or EPC (VW) light may appear on your dashboard. The two main issues EGR valves face are that, either the valve stays open or it shuts completely.

What does code 33 on EGR sensor mean?

Code 33 means the EVP sensor output voltage did not change when ECM expected EVP to register valve opening via an EVP signal voltage increase. Check connection and condition of vacuum line from EGR Valve Regulator (EVR) to EGR valve, repair/replace if necessary.

What should dpfe voltage be for EGR valve?

Assuming the EGR valve is ok the engine should begin to stumble and possibly even stall as vacuum is applied to the valve and the pintle opens. Your DPFE voltage should also approach 4.5 volts.

Why is my EGR reading 99.2%?

The error value is what caught my attention. These values hold while increasing RPM. No codes are being set either. I also tried unplugging and plugging my EGR valve connector – no change in the readings whether plugged in or out. I have always run with it plugged in. For any of the techs out there, is this normal?

What should the EGR be on a diesel engine?

The accepted EGR static test is to measure the EGR position voltage at 0% (this is a KOEO test, BTW)and then command the valve to at least 99% duty cycle. Measure the EGR position voltage again. Closed, the EGR volts should be about 0.8 and wide open we typically see 3.8 to 4.0 volts.

In order to achieve this, they are introduced back into the combustion chamber via the exhaust gas recirculation (EGR) valve; this reduces the temperature and thereby inhibits the production of NOx emissions.

What kind of engine does a Ford Bronco have?

The 2.9L V-6 was offered in the Ford Bronco II from 1986-1990. The 1986-1988 heads were known for cracking. Usually caused by overheating the engine. The cylinder heads underwent a redesign for the 1989 model year, receiving additional material in problem areas, largely eliminating this specific failure.

Do you need to test the Ford EGR valve?

Testing the EGR system on your Ford, Mercury, or Lincoln car or truck is a pretty easy affair. You don’t need expensive testing equipment to do it and more importantly, with this article you’ll be able to find out exactly what part (of the entire system) is bad and needs to be replaced and in the process saving time and money.

How do you remove the EGR valve from a Ford Windstar?

Remove the EGR valve from the top of the motor by using a socket wrench to unfasten the bolts holding the valve in place. Take the valve off the engine and discard it. Place the new EGR valve on the motor of your Ford Windstar and attach it with two bolts to the engine. Connect the vacuum hose to the vacuum port on the top of the EGR valve.

How does the EGR valve work in an engine?

The working mechanism involves creating a diluted air-fuel mixture by allowing a metered amount of exhaust gas into the engine. Such a mixture lowers the combustion temperature by up to 300°F by burning more slowly. The EGR valve is the main component of the EGR system. It regulates the amount of exhaust gas passing into the engine intake manifold.

Which is the most common cause of EGR failure?

We will go through the most common cause of failures an EGR can face and what can cause them: The EGR system flow is insufficient. Problems with the Differential Pressure Feedback Sensor (DPFE sensor) or hoses that lead to the unit which is specific to the Ford vehicles The EGR system flow is excessive.

How do you replace an EGR valve?

Replacing The EGR Purchase the correct EGR valve for the make and model of your vehicle. Let your engine cool. Disconnect the battery. Locate the EGR. Disconnect the vacuum line. Disconnect the electrical cable. Use a wrench to remove the bolts on the EGR valve’s mount. Take out the old EGR valve. Clean the valve base and passages.

What are the symptoms of a leaking EGR valve?

A faulty EGR valve or related component may leave the valve in either the stuck open or stuck closed position. The symptoms of a stuck open EGR valve are a rough idle with a lean air fuel mixture. The engine has a major vacuum leak. The symptoms of a stuck closed EGR valve are pre-ignition, ping, and knock.

What is EGR valve failure?

An EGR valve. Failure to repair or replace the ERG valve could increase emissions from the car. A faulty EGR valve may result in a stalled car. An issue with an EGR valve is often diagnosed through reading the car’s diagnostic trouble codes. A trusted mechanic may be able to repair the EGR valve instead of replacing it.

What is an EGR solenoid malfunction?

An EGR switch consists of a valve, vacuum and solenoid. When a vehicle’s combustion temperature rises above 2500 degrees, the EGR valve opens and the vacuum draws in exhaust to help balance out harmful emissions. The EGR solenoid controls the vacuum process through the valve and if it malfunctions, major problems can develop. Structure.

What causes a ping sound in the engine?

A defect in the cooling system can also result in engine ping. First, do not confuse engine ping with a mechanical failure that produces an internal knock in the engine. An engine knock will be a deep sound that eminates from the engines lower section and will be present under almost all operating conditions.

When does an engine ping or knock on acceleration occur?

An engine knock will be a deep sound that eminates from the engines lower section and will be present under almost all operating conditions. Engine ping is usually present during moderate to heavy engine acceleration after the engine has reached or is near operating temperature.

What causes poor performance when the EGR valve is open?

Poor performance can be caused when the valve is open or closed. The incorrect function of the EGR valve can cause the erratic performance of your vehicle. Increased fuel consumption is caused when the valve is constantly open.

How does EGR reduce the production of NOx?

To reduce the amount of NOx pollutant emitted from your vehicle, exhaust gases need to be cooled before being emitted from your vehicle. In order to achieve this, they are introduced back into the combustion chamber via the exhaust gas recirculation (EGR) valve; this reduces the temperature and thereby inhibits the production of NOx emissions.

How to test the dpfe EGR flow signal?

Leave the vacuum pump connected to the EGR valve and go to: TEST 2: Testing The DPFE EGR Flow Signal.

How to get diagnostic code for Toyota check engine light?

1 Connect scan tool to the 16-pin data link connector (DLC) located underneath the steering column. The connector may have a removable cover. 2 Turn the ignition on. 3 Follow scan tool manufacturer’s operating instructions to access the Diagnostic Trouble Codes (DTC’s).

Where is the EGR valve on a 3.0L engine?

The guide applies to the 3.0L engine, which is similar to other models. Park the car in a safe place. Open the hood and wait for the engine to cool down, if necessary. Locate the EGR valve on the right side, toward the rear of the engine. The valve looks like a large, flat, metal mushroom.

How do you remove EGR valve from pipe?

Detach the EGR valve from its mounting base and pipe. Discard the gasket located underneath the valve and clean the mating surfaces of the base of the valve and its mounting base. Use a plastic scraper to avoid damage to the mating surfaces.

Where is the EGR valve on a Dodge Avenger?

The 2009 Dodge Avenger EGR valve is not shaped like the old EGR valve; it is a cylinder shape on this vehicle. It is located on the left side of the engine near the front. Where is the E.G.R. valve located on a 2011 Mazda MX5?

Where is the EGR valve located on a 2005 ML350?

Where is the EGR valve located on a 2005 ml350? On the ml 350, the EGR valve, when looking at the engine from the front, will be on the right side, near the engine block, toward the front. Look for the telltale shape of the EGR valve. It may be in a sideways position.

What are the different types of EGR valves?

This helps to ensure the car maintains fuel efficiency and emits fewer emissions. There are two types of EGR valves; a vacuum-operated and an electronically controlled EGR valve. A vacuum-operated EGR valve is usually only found in older vehicles. It is a straightforward system which utilises a vacuum to switch the EGR valve from closed to open.

Can a vacuum controlled EGR valve be repaired?

The older vacuum controlled EGR valves are easier to repair because the function is much simpler. If you have a vacuum controlled EGR valve, you can often replace the membrane inside it and clean it up to function as a new EGR valve. Newer EGR valves contain a lot of electric parts and can be really difficult to repair if you are not an expert.

Can a bad fuel pressure regulator cause a rough idle?

Once warm, a bad fuel pressure regulator can cause a rough idle by leaning out the mixture due to low fuel pressure. A Fuel filter would not cause a rough idle when warm. A clogged fuel filter would cause far more problems on a cold start when fuel demand is higher.

What causes engine to run rough after warm up?

Most likely, the causes of rough engine idle crops from the basic functional components like direct fuel injectors, PCV valve, EGR valve, Oxygen sensors, vacuum leaks, air filter, and spark plugs or wire. Now, let’s fix the issue when engine runs rough after warm up in sequence and later troubleshoot the actual cause of it. 1.

Why does my car feel rough when the engine is idle?

This will cause your overall driving experience to feel rough and you’ll likely be bouncing a little bit in your seat from it. When the engine idles, there will usually be a misfire that you can feel just from holding onto the steering wheel. Furthermore, the RPM of your engine will be higher than normal when the vehicle is idle.

Is the EGR valve supposed to run during idle?

However, this EGR valve isn’t supposed to operate during idle, at wide open throttle or before the engine is warmed up. If it runs at any of these times, the performance of the engine is affected.

What are the symptoms of low fuel pressure?

Low Fuel Pressure Symptoms & Causes 1 Unresponsive Throttle. All cars require proper fuel delivery to their cylinders in order… 2 Difficulty Starting the Car. Low fuel pressure will also make it hard for you to ignite your car’s… 3 Stalling Engine. If your car’s engine stalls while running, it is a clear sign you are having some…

Why does my car engine run rough while idling?

When your car engine runs as it should, everything should be smooth without any noise. When any number of things goes wrong, the engine can start running rough, especially while idling. By understanding the causes of a car engine that has a rough idle, you can resolve the issue easily.

What is the EGR code on a Ford F150?

There are three main parts of the F150’s EGR system. They are the EGR Valve, Differential Pressure Sensor, and the Actuator Solenoid. P0401 is a general code, which means that regardless of the year (1996+ anyway) and the model, it’ll have the same meaning regardless of which manufacturer built the vehicle (Ford F150 or not).

A malfunctioning EGR valve fails to control the volume of exhaust gases entering the chamber. As it remains in a closed or open position, the exhaust gas in the chamber is either too less or too much – leading to the idling of the engine. Fuel odor inside the car’s cabin is one of the most obvious bad EGR valve symptoms.

When to replace PCV valve on Ford Escort?

You’ll hear a rattle. If you don’t, it is time to replace the valve. Even if the valve rattles, if your engine is experiencing one or more of the bad PCV valve symptoms described above, it’s a good idea to replace the valve. Some vehicles—including some old Ford Escort models—come equipped with a small, hollow, plastic block with no moving parts.

What causes an EGR sensor to get stuck?

The EGR temperature sensor is registering too much of a temperature change when the EGR valve is opened from a partly blocked exhaust catalyst causing excessive back pressure in the EGR system. The EGR is stuck open due to binding or carbon deposits holding the valve open.

Why do exhaust gas recirculation valves wear out?

Mostly all the modern vehicles on the road now have an EGR system (Exhaust Gas Recirculation). The EGR makes use of an EGR valve which often wears out due to lack of maintenance and results in poor performance. In this article, we will discuss the symptoms you might notice if the EGR valve is damaged and how to take care of the situation.

What does a check engine light mean on an EGR solenoid?

Check Engine Light comes on. An illuminated Check Engine Light is another symptom of a bad or failing EGR control solenoid. If the computer detects an issue with the EGR solenoid, circuit, or system, it will set off the Check Engine Light to notify the driver of the issue. A bad EGR solenoid can cause a variety of different trouble codes,…

What are the components of the Ford EGR system?

The Ford EGR system uses 3 components: • an EGR valve that opens and closes a passage from the exhaust to the intake manifold, • an Electronic Vacuum Regulator (EVR) that opens and closes passages from the intake manifold to the diaphragm of the EGR valve, and.

How is the dpfe sensor connected to the EGR valve?

On the way up to the EGR valve, the exhaust gas passes through a restriction. The DPFE sensor hoses are connected to ports 1 and 2—before and after the restriction. By comparing and reporting the differences in pressure, the computer can determine exactly how much exhaust gas is flowing through the EGR valve.

How much does it cost to replace an EGR valve on a Ford Escape?

Correction of the issue requires a diagnostic scan, identification of the faulty sensor, and, ultimately, the sensor and EGR valve may require replacement. In some models, the DPFE sensor is integrated into the EGR valve, and must be replaced together. The average cost for a Ford Escape EGR Valve Replacement is between $207 -$218.

Can a bad EGR valve cause poor acceleration?

Answer: The EGR could be stuck open. If the engine is fed exhaust fumes continuously, this can overheat the valve, cause poor acceleration. Check the EGR system and see if a bad vacuum solenoid is keeping the valve opened. Check the control circuit as well.

What to do if your EGR valve is leaking?

Answer: The EGR valve gasket is probably leaking, allowing exhaust fumes to escape. Remove the valve, clean buildup around the valve and passages, if any, and replace the gasket. Remove the valve, clean buildup around the valve and passages, if any, and replace the gasket.

Can a Ford Escape lose power while driving?

Many customers state that while driving their vehicle, the engine will hesitate, stumble, or lose power. In more severe cases, the EGR valve can be physically damaged.

Is the Check Engine Light ( CEL ) an EGR valve?

You tried to ignore it, but there’s just no turning your back on the fact that your Check Engine Light (CEL) is staring you in the face, threatening to fail your car at its next emissions inspection appointment. You take your car to the repair shop for some professional analysis, and they tell you that you are going to need a new EGR valve.

What’s the diagnostic code for the EGR valve?

Several technical service bulletins for a wide variety of different makes and models have documented different problems associated with the EGR valve system. With some exhaust gas issues you might set a diagnostic trouble code of PO401 or P0402.

What does a p0401 code on EGR mean?

So this sums up our guide to fix a persisting P0401 code. All you have to do is learn that a P0401 code means an insufficient EGR flow. This error may be due to some build-up carbon that clogged your EGR tubes, a faulty EGR valve, a damaged EGR solenoid, or even a damaged OBD-II.

What should the resistance be on the EGR sensor?

If the EGR valve in your car is vacuum actuated, perform the bench-test of the position sensor using a vacuum pump and a DMM. Remove the connector and measure the resistance across the whole circuit and the reading should be around 6 kΩ.

How to reset exhaust gas recirculation ( EGR ) value with?

5)Using a soft bristled tooth brush, scrub the EGR Valve, spray further cleaner into valve if needed. Once all traces of carbon are removed, using a lint free cloth dry the EGR Valve. 6)Disconnect vacuum pump or OBDⅡ diagnostic tools.

Can you clean an EGR valve without removing it?

If you cannot get direct access to the turbo an alternative would be to spray (less effective) into the air duct in the direction of the turbo but please remember to remove the MAF (mass airflow)/air intake sensor first as the cleaner may damage it. Please feel free to Comment, Like, Share and Subscribe. This video is for guide purposes only.

How can I tell if my F-150 is having transmission trouble?

F-150s have two different ways of notifying you of transmission trouble before it goes kaput. If the truck’s computer senses something going wrong with the transmission or any of its components, the words “Transmission Fault”, or a big orange wrench, will appear in your dashboard messaging center. Figure 1.

As the name implies, the EGR valve circulates a regulated amount of exhaust into the intake manifold, lowering the temperature of the air-fuel mixtures and reducing pollutants. The EGR valve is a vital part of the emissions system and plays an important role in the overall operation of the engine.

What are the EGR valves on a Ford F150?

They are the EGR Valve, Differential Pressure Sensor, and the Actuator Solenoid. P0401is a general code, which means that regardless of the year (1996+ anyway) and the model, it’ll have the same meaning regardless of which manufacturer built the vehicle (Ford F150 or not).

What are the symptoms of a Ford EGR fault?

The following are the most common symptoms that a Ford (or Mercury or Lincoln) car or truck will usually experience when there’s a fault in the EGR system: P0401 EGR System Flow Insufficient. P01406 EGR Valve Pintle Position. Rough Idle. Really bad gas mileage.

Why is my Ford F150 p0401 not starting?

Check the tube and see if it is cracked, clogged or otherwise damaged. EGR Valve Itself is Bad– The EGR valve itself is usually not going to be the place to start. But, they certainly are the cause of P0401 often enough. Vacuum Issues– The EGR valve relies on engine vacuum to operate.

If there is a fault in the EGR system, it can cause the EGR not to function properly. Your vehicle’s EGR valve can be faulty due to the accumulation of carbon deposits in its internal surface, pitting, burnt valve, a damaged diaphragm for a vacuum-type EGR valve, or distortion of the valve seat. This problem can also have the following causes:

Some of the symptoms that you might notice are: The check engine light is on. When there is an issue with the car’s EGR, the check light will come on to notify the driver of the problem. The rough Idle is a very common symptom of a faulty EGR valve.

Can a bad IAC cause a DTC to set?

If you do not hear a change in RPMs, do not assume the IAC is bad until you do further testing. Also, this test may cause DTCs to set. With the engine off, unplug the IAC. Then start the engine and listen for an idle speed that’s either too high, too low, or fluctuating.

What is the code for Ford Taurus idle air control?

Use Code: DIYSAVE10 Online Ship-to-Home Orders Only You love your Ford Taurus because it’s safe and dependable. But vehicle performance goes downhill if you have a faulty idle air control valve, which controls the air going into the engine, allowing your Taurus’ computer to match it with the correct amount of fuel.

How to tell if Taurus IAC valve is clogged?

Use the form above to tell us what you drive. Symptoms of a Taurus IAC valve that is clogged with dirt and debris include the valve’s slowed response time, the engine’s RPM dropping significantly and instant, irregular deceleration and backfiring when you lift your foot off of the gas pedal. There’s no need to suffer through decreased performance.

How does the Ford EGR valve system work?

For simplicity’s sake we’ll base our diagnosis on a typical Ford EGR system. Let’s get started! So what is an EGR system and how does it work? EGR stands for Exhaust Gas Recirculation, and as its name implies, this system allows exhaust gasses from your car to be re-circulated into the engine, helping to reduce emissions.

Why does my dpfe have a leaking EGR valve?

You now know the DPFE, EGR valve and tube and hoses are okay and we can move on to test the EVR (EGR Vacuum Regulator), part of the system. If the reading did not change, then you could suspect a leaking EGR valve, allowing uncommanded flow of exhaust gases.

What should I do if my EGR valve is not working?

There should be no vacuum there at this time. If there is then check for proper EVR (EGR vacuum regulator) operation and vacuum line routing. Repair and continue testing. Hook up your hand vacuum pump to the EGR valve and slowly apply a vacuum. If the EGR valve is functioning then the engine should begin to run poorly and stumble.

How does the EGR system in a car work?

So what is an EGR system and how does it work? EGR stands for Exhaust Gas Recirculation, and as its name implies, this system allows exhaust gasses from your car to be re-circulated into the engine, helping to reduce emissions.

When does the Check Engine light come on on an EGR?

Can a vacuum gauge diagnose an engine problem?

Years ago, a good friend introduced me to using a vacuum gauge to diagnose engine problems, in fact, it was often the first tool he would reach for when confronted with a poorly running engine.

Can a faulty EFI cause an engine stumble?

With computer controlled EFI, the computer or any of its sensors or actuators can go faulty, and when this happens you can get, you guessed it- incorrect ignition and incorrect fuel/ air mixture for the required operating condition, thus engine stumble. Here is the list of items on the 90+ that can be sources of this problem (no particular order):

Years ago, a good friend introduced me to using a vacuum gauge to diagnose engine problems, in fact, it was often the first tool he would reach for when confronted with a poorly running engine.

What can cause an EGR valve to be stuck?

An increase in hydrocarbon emissions isn’t necessarily caused by a stuck-open EGR valve. Problems in other systems may cause this same symptom as well: a leaking fuel injector, bad ignition timing, bad cylinder compression, bad oxygen sensor, or other problems.

What’s the code for an EGR valve throw?

What code will an EGR valve throw have? The P0401 trouble code is related to your car’s exhaust gas recirculation (EGR) system, which controls an engine and reduces emissions. Suppose a computer-controlled valve gives a certain amount of gases back into your engine to be burnt with the air-fuel mixture.

What does the EGR valve on a Ford F-250 do?

The exhaust gas recirculation (EGR) valve on a Ford F-250 is part of the emissions and engine control system. The EGR system consists of the EGR valve, the EGR vacuum regulator, the differential feedback pressure sensor and various pipes and pressure lines. The system lowers nitrogen oxide emissions that are created by high-temperature combustion.

What are the parts of the EGR system?

The EGR system consists of the EGR valve, the EGR vacuum regulator, the differential feedback pressure sensor and various pipes and pressure lines.

How to avoid a leaky EGR tube Ford F150?

To avoid this, cancel and sign in to YouTube on your computer. I like to find and share creative ways to deal with the mechanical problems that are a part of our everyday lives. My training is in electronics and industrial electrical maintenance. And I was an English major in college.

Can a clogged rear cat ruined one manifold?

On my Escape, I absolutely believe a clogged rear cat ruined one manifold. When you were driving this, under wide-open throttle, did the engine get to about 5,000 rpm and then refuse to upshift until you backed off the throttle – and then shift very harshly? If so, I’d say there’s a 90% chance you have a clogged main cat.

What causes a 2006 F250 SD 6.0L to miss?

I am continuing to have issues with a 2006 F250 SD 6.0L PS that has 128,000 miles on it, no mods, no codes. Under moderate acceleration, 45-75% acc pos, I feel an apparent miss as it were, in a rhythmic form. It is pulsing in reverse.

Can a bad throttle position sensor cause idle surging?

Idle surging can be caused due to other issues in the car, but if it happens in conjunction with other throttle position sensor symptoms, the culprit is often the TPS. At idle, the ECM will not get the correct information and the throttle will variate randomly causing idle surges. 3) Check Engine Light

What causes a diesel engine to stutter when idle?

This problem is caused by a MAF sensor or even a clogged file pressure rail check both and if those aren’t your problems then it could be bad diesel or your idle control is bad check all of the above and replace all if possible You can’t post conmments that contain an email address.

How to fix a 2006 F 350 6.0 diesel engine?

2006 F 350 6.0 diesel hesitates, stutters when giving fuel around 1800 to 2400 rpm. Have re-manned ficm with 50hp boost. Has run great for months. Start up a grade and add fuel…engine stutters and lightly bucks. Does not have the power as normal. New oil, both fuel filters, clean air raid air filter, no codes…

What is the EGR valve on a 6.0L Powerstroke?

The EGR Valve on the 6.0L Powerstroke regulates the amount of exhaust gases that are reintroduced to the engine. Just like the EGR Cooler, the EGR Valve is suspect to clogging issues from excess soot. 05′-07′ 6.0L Powerstroke EGR Valve From Sinister Diesel Sinister Diesel EGR Valve 03-04′ 6.0L Powerstroke

Why is my 6.0L Powerstroke not working?

The EGR Valve on the 6.0L Powerstroke regulates the amount of exhaust gases that are reintroduced to the engine. Just like the EGR Cooler, the EGR Valve is suspect to clogging issues from excess soot. The valve can stick open, causing poor performance.

Why is the EGR valve on my Ford PowerStroke not working?

The Ford Powerstroke EGR valve can clog up due to the quality of fuel used in the vehicle and excessive idling. Debris builds up in the EGR valve because diesel fuel burns at a lower temperature, creating more debris than with gasoline. The soot produced from diesel fuel can clog up the EGR valve quickly.

The EGR Valve on the 6.0L Powerstroke regulates the amount of exhaust gases that are reintroduced to the engine. Just like the EGR Cooler, the EGR Valve is suspect to clogging issues from excess soot. The valve can stick open, causing poor performance.

What causes a Ford PowerStroke to stop working?

EGR Failure. A common problem with the Ford Powerstroke EGR is complete failure caused by a vacuum leak. The EGR takes the exhaust fumes and sends them back into the engine, which decreases the chemicals released through the exhaust system. A vacuum leak will cause the EGR to work harder, overheating the device.

What’s the trouble code for a Ford engine?

Trouble Code. Fault Location. Probable Cause. P0171. Fuel trim (FT) system too lean, bank 1. Intake/exhaust leak, AIR system, MAFNAF sensor, fuel pressure/pump, injector (s), HO2S. P0300. Random Cylinder Misfire (Cylinder Not Specified) Spark plug (s), HT lead (s), injector (s), ignition coil (s), low compression, wiring.

What happens when the EGR passageway is blocked off?

When the EGR passageway becomes blocked off it keeps exhaust emissions and air from circulating in the engine, causing a suffocating condition. The engine idle will be rough, frequently stumbling and unable to hold a steady idle rpm. The rpm may be sporadic, raising and lowering randomly.

What is the EGR code on a Ford F350?

There are three main parts of the F350’s EGR system. They are the EGR Valve, Differential Pressure Sensor, and the Actuator Solenoid. P0401 is a general code, which means that regardless of the year (1996+ anyway) and the model, it’ll have the same meaning regardless of which manufacturer built the vehicle (Ford F350 or not).

What causes p0401 code on Ford F350?

Diagnosing what is causing the P0401 code in the F350 is typically not very tricky. Here are the most common causes: Blocked EGR Tube – The tube that carries the exhaust gases back to the motor may clog up over time. Alternatively, it can become bent or kinked.

What causes the EGR to stop working on a Ford?

EGR flow malfunction could be caused by a clogged EGR valve or EGR tube. Before replacing any parts try cleaning the EGR valve, tube, and passages. If the tubes are clean you may have to replace the EGR Pressure sensor to fix the problem. The cost to diagnose the P0401 FORD code is 1.0 hour of labor.

How do you test the Ford EGR valve?

This test step is done with the EGR valve off of the engine. The EGR valve may be hot, so be careful. The purpose of this test is to verify that when vacuum is applied to the EGR valve, the EGR valve’s pintle actually opens and closes.

What is the average rating of the EGR system?

Average rating from 129,829 customers who received a Exhaust and Emission System Inspection. The exhaust gas recirculation system, also known as the EGR system, is an emission system that is found on many road going cars and trucks.

How long does it take to test an EGR valve?

Today I’d like to throw some thoughts out on how to check a car’s EGR Valve and related EGR system components for proper operation. Most basic automotive systems can be pinpoint tested down to a faulty component in a matter of less than 20 minutes, regardless of the code.

Why does my Ford F150 have insufficient flow?

That’s because the EGR valve is not always going to be the culprit. Here are some of the most common fixes to help clear the P0401: Check the EGR Tube- It’s a good idea to check the tube going to the EGR because it’s often the cause of P0401, easy to do, fast, and replacing it is very affordable. If it’s cracked, you’ll need to get a new one.

How much does it cost to remove an EGR valve?

Egr valve itself is close to $100 give or take depending where you get it. So there are ways to over come the ordeal. The computer is going to be the headache, so if the light stays on so be it. I have never burnt a piston, a valve yes but that was my fault not the engine.

Can you eliminate all emissions in a Ford Bronco?

Fordfuelinjection.com sells the resistors to solder into the plugs where the EVAP solenoids were and a plug with the correct resistance values for the EGR to trick the computer into thinking all is well with the emissions system . I did it to my 89 5.8 bronco with C6 and it works great .

How often should I Check my EGR valve?

Most countries require a vehicle’s emission test every six months. Check the EGR system if your car fails the test. You already know that all problems occur due to two reasons – the EGR valve stuck open or it stuck closed. So, it’s possible to divide the symptoms of a bad EGR valve into two categories:

Why is my exhaust gas recirculation valve stuck open?

The exhaust gas recirculation (EGR) valve sends some of the engine’s exhaust gases back through the intake system to lower the vehicle’s emissions. Over time, the EGR valve can fail in the open or closed position. An EGR valve that is stuck open can result in an air-fuel mixture that is too lean.

Can a blanked off EGR improve engine performance?

Of course its not. The EGR pumps warm used air back into the engine instead of cold clean air. If you were to blank of the EGR, it would continuously get cold air thus an improvement in performance. For people looking for the best performance upgrade (such as myself), a remap with a blanked off EGR will provide excellent results.