How to test the fuel injectors in a Ford Explorer?

If possible, you need to test the fuel injectors with a warm engine (not hot, but warm). So, if you’re starting out with a cold engine in your 4.0L Ford Explorer (or 4.0L Aerostar, 4.0L Ranger, etc.) you need to start and run the vehicle for about 20 minutes. If the engine is too hot, let it cool down for about an hour.

Why is my fuel injector not working properly?

The fuel injector gets clogged with deposits and won’t spray enough fuel or in the proper spray pattern. The fuel injector doesn’t activate because it does have power but the fuel injection computer doesn’t activate it.

Why is there no spark at the injectors?

The engine in 4.6L v-8 there is spark but no pulsing at the injectors. It was the PCM power relay that was bad cost me $34.00 all fixed I love this site. helpful? The security system can cause non starting. If there is a fault with the security system, the THEFT indicator light would glow or flash rapidly after ignition key is turned ON.

How to interpret the results of the fuel injector test?

Interpreting The Results Of The Fuel Injector Test. Important Tips. You can find this tutorial in Spanish here: Cómo Probar Los Inyectores De Combustible (Ford 5.0L, 5.8L) (at: autotecnico-online.com ). The most common symptom of a bad fuel injector is an engine miss at idle or when you accelerate the vehicle.

What happens when the fuel injector goes bad?

The fuel injector doesn’t activate because it does have power but the fuel injection computer doesn’t activate it. PCM goes bad and activates the fuel injector as soon as the Key is turned to the Run position. No matter what the root cause, a bad fuel injector will cause the engine to idle rough and miss when you accelerate it down the road.

How are fuel injectors controlled in a Ford?

This is regulated through sensors, your Ford’s engine computer, and the injectors. The fuel injectors are electronically controlled by the car’s engine control unit.

What causes fuel injector connectors to break on 4.6L Ford engine?

Before you start, let me tell you that broken fuel injector connectors are one of the most common problems with the 4.6L Ford engine. To be a bit more specific: it’s the plastic locking tabs of the connector that break. So before you start, take a look at all of the fuel injector connectors to see if you have any that have broken locking tabs.

What should the resistance of a fuel injector be?

When done, write this Ohms value down and record the number of the cylinder that fuel injector belongs to, too. The fuel injector resistance will be about 11-18 Ohms. If on your Ford Explorer or Aerostar or Ranger this value is different but don’t worry about this too much for now. OK, repeat test steps on the remaining fuel injectors.

What do fuel injectors do in a Mustang?

Mustang fuel injectors are a vital part of your motor as they supply your engine with the correct amount of fuel for your application. Knowing your stock Mustang fuel injector size can help you in judging if you have the correct size injectors for your application.

What happens if you have a bad fuel injector?

If you did have one bad fuel injector in the whole bunch, you would get a drastically different Ohms value in one of them. For example, if 5 of the 6 measured 11.5 to 11.9 Ohms and the sixth one measured 4 Ohms. Well, the one measuring the 4 Ohms is the one that’s fried.

Where are the fuel injectors on a Ford Explorer?

Testing the fuel injectors on the 4.0L Ford fuel injected engines in the Explorer, Aerostar, Ranger and Mercury Mountaineer can be quite a challenge since three of them are under the intake manifold plenum. But once you get to them, the test itself (of the fuel injectors) is very easy.

How to test the fuel injectors ( 5.0L, 5.8L )?

Testing the fuel injectors on the fuel injected 5.0L engine and 5.8L engine can be quite a challenge since half of the 8 fuel injectors are under the intake manifold plenum. In this tutorial, I’m gonna’ show you a specific diagnostic strategy you can use to find out if you do indeed have a bad fuel injector on your hands or not.

What kind of engine does a Ford Explorer have?

Models made from 2000 to 2007 can be equipped with a 2.0L or 2.3L engine. Models made after 2007 will have a 2.0L engine. Relieve the fuel system pressure and disconnect the negative battery cable with a socket wrench.

How to test the fuel injectors in a 4.6L Ford engine?

You and I can easily check this by doing a simple multimeter resistance test. The cool thing about the 4.6L Ford engine is that its fuel injectors are pretty easy to get to. So, we’re gonna’ start off by checking the internal resistance of all 8 fuel injectors. The resistance specification is 11 to 18 Ohms.

What causes a fuel injector to not work?

If you do find any broken fuel injector connectors, there’s a good chance that you’ve found the problem that’s causing the fuel injector not to work (since the broken locking times will cause the connector to make a false contact with a fuel injector). NOTE: Your fuel injector resistance test should be done with your Ford vehicle’s engine cold.

Where can I find the F150 fuel injectors tutorial?

To see if your specific pickup, van or SUV is covered by this tutorial, check the Applies To: box on the right column (or at the bottom of the page). You can find this tutorial in Spanish here: Cómo Probar Los Inyectores De Combustible (1997-2002 4.6L F150) (at: autotecnico-online.com ).

How do you change the fuel injectors on a Ford car?

Unplug the electronics from each fuel injector. The fuel injectors will be connected to the chrome fuel rail. Remove the two bolts securing the fuel rail to the engine. Lift the fuel rail from the fuel injectors. Rock the fuel rail side to side to disengage the fuel rail from each injector head.

What to do if your fuel injector is not working?

If they are silent, they are not working. Fuel Injector Inspection – You can take the injectors out of your Ford and inspect them for damage, dirt or rust. You can start by removing the fuel rails and detaching each injector from the rail.

What kind of fuel injector does Ford Focus have?

Determine which fuel injector your Ford Focus will need. This depends not only on the make and model, but also the engine size. Models made from 2000 to 2007 can be equipped with a 2.0L or 2.3L engine. Models made after 2007 will have a 2.0L engine.

What should I do if my Ford fuel injector fails?

Fuel Injector Inspection – You can take the injectors out of your Ford and inspect them for damage, dirt or rust. You can start by removing the fuel rails and detaching each injector from the rail. When you remove the injector, there will be fuel that spills out of the rail, so make sure you do not get it on you or the ground.

What causes fuel injector to fail in O’Reilly car?

Injector seals and O-rings can also fail, causing fuel leaks near the top of your engine. O’Reilly Auto Parts carries fuel injectors for most vehicles, and many from OE supplier brands. Shop our selection and find the right fuel injectors for your repair.

Why does my car have no pulse to injectors?

P0193 can be due to disconnected fuel pressure sensor hose. It can also be caused by excessive cranking without engine starting so we should not worry about this as it is the injectors that are not working. Lets try this. With test light connected to injector RED wire. Turn ignition on. Test light should come on. Crank engine.

How does the engine control unit control the injector pulse?

Question: What controls the fuel injector pulse? Ans: The engine control unit is the electronic brain that used to control the fuel injector pulse by gathering data from various sensors along the fuel line

How do you test a fuel injector ( ANS )?

Ans: By using a simple diagnostic tool called NOID light, this tool detects a digital signal coming from the ECU and flashes an LED light, so if there is no LED flashing during cranking, this means that there are no pulses coming out of the ECU. Question: How do you test a fuel injector?

Why is my injector pulse not working on my car?

Ans: Having a stuck or clogged injector is a very wide known problem that happens because of the accumulation of carbon build-ups that coming out from using a low-grade fuel, so regularly using a fuel system cleaner can help you in this mission.

What is the horsepower of a Ford Explorer?

Rated at a rather anemic 210 horsepower, the 4.0L SOHC V6 is not exactly a high output engine. It also has an unusual overhead cam drive setup.

Are there any TTY bolts on Ford Explorer?

The jackshaft drive gear and cam drive gear retaining bolts are TTY (torque-to-yield) and should not be reused. If you don’t replace these bolts with new ones, there’s a risk of breakage. The rear jackshaft bolt is also covered by a small circular plug on the back of the engine.

What should I do to my Ford Explorer?

That includes removing the flywheel and flexplate so that the rear cam drive cassette can be replaced, and pulling the oil pan so any debris in the oil pan and oil pickup screen can be cleaned out.

Can you test the fuel pump on a Ford Explorer?

Thankfully, Ford has made it super easy to test the fuel pump on your 4.0L Explorer (4.0L Ranger, 4.0L Aerostar or 4.0L Mountaineer) and in this article I’ll show you how to do it. Contents of this tutorial: Symptoms Of A Bad Fuel Pump. FUEL PUMP TEST 1: Using Starting Fluid. FUEL PUMP TEST 2: Fuel Pressure Test With Gauge.

How to test the fuel injectors in a Ford 4.0L?

You can find this tutorial in Spanish here: Cómo Probar Los Inyectores De Combustible (Ford 4.0L) (at: autotecnico-online.com ). If you do have to remove the intake manifold’s plenum, to get to the three fuel injectors underneath it, you need to keep in mind several important things:

How long to cool down Ford Explorer engine?

So, if you’re starting out with a cold engine in your 4.0L Ford Explorer (or 4.0L Aerostar, 4.0L Ranger, etc.) you need to start and run the vehicle for about 20 minutes. If the engine is too hot, let it cool down for about an hour.

Can a Ford Explorer run without a fuel pump?

Without gas your Explorer will not run at all. With that in mind, most of the symptoms of a bad fuel pump revolve around the vehicle stalling out or not running at all. In modern fuel injected vehicles, the fuel pump sits right in the fuel tank and “pushes” the gasoline to the fuel rail (s).

Why does my Ford 4.0L explorer not start?

So, when your Ford 4.0L Explorer (Aerostar, Ranger or Mountaineer) Cranks but Does Not Start, it’s because one of these components is missing from the mix.

Is it necessary to replace fuel tank in Ford Explorer?

AutoZone carries long-lasting Explorer replacement fuel tanks that are perfect for your vehicle. A leaking fuel tank is a safety hazard, and if your tank is beyond repair, it’s vital that you replace it.

So, when your Ford 4.0L Explorer (Aerostar, Ranger or Mountaineer) Cranks but Does Not Start, it’s because one of these components is missing from the mix.

What kind of ignition system does Ford 4.0L have?

The ignition system of the Ford 4.0L equipped vehicles covered by this article use a distributor-less ignition system. More specifically, it uses a coil pack type ignition system. No power to the ignition coil pack.

What to do if there is no injector pulse?

If after all this you got the same result, so it’s time to check the injectors itself if there is no injector pulse on one cylinder, by try to unplug injectors one at a time, if the engine starts when a particular injector is unplugged so that it is the defected one that needs to be replaced

What causes no power to fuel injectors?

The most important signals that determine the accuracy of a signal coming out of ECU to injectors are crankshaft position sensor and camshaft position sensor, so to test a bad injector, you have to check the voltage on the injector when the ignition key is turned on: NO VOLTAGE? , so what causes no power to fuel injectors?

What causes no power to fuel injector pulse?

Ans: The engine control unit is the electronic brain that used to control the fuel injector pulse by gathering data from various sensors along the fuel line Question: What causes no power to fuel injectors?

What kind of engine does a 1998 Ford Explorer have?

1998 Ford Explorer Specs Specifications. 1998 Ford Explorer Engine: 4.0L V6 OHV: 4.0L V6 SOHC: 4.9L V8: Horsepower: 160: 205

How to test the fuel injectors in a Ford Explorer?