What causes a Chevy Silverado to run rough?

If an oxygen sensor goes bad, it can make your Silverado run too lean (or rich). A super lean running engine will often idle rough. Fuel Injectors. The fuel injection systems job is to atomize the fuel into fine mist.

What kind of fuel pump does a Chevy Silverado need?

It turned out the pump I put in was for a 96 C1500, which has a throttle body system and the pump only produced 20-30psi. The Fuel injection in the Silverado needs 55-65psi. Be very careful you didn’t put the wrong fuel pump in!!

Can a Chevy C / K 1500 run without fuel?

Also I haven’t fully checked the Spark, but the Truck run’s fine when you spray Starting fluid into the Throttle body. Any suggestions on why the truck isn’t accepting the fuel, it cranks fine, just wont run without starting fluid. these trucks have to have between 55-65psi of fuel to run.

What kind of pump does a 96 Silverado use?

I have a 96 Silverado 1500, and it did the exact same thing. It would fire with starting fluid after a line, filter, relay and pump replacement. It turned out the pump I put in was for a 96 C1500, which has a throttle body system and the pump only produced 20-30psi.

What’s the fuel pressure on a 97 Chevy?

There are two different fuel pressure specs for this vehicle. Central SFI 60-66 psi SFI 56-62 psi If you are not experiencing any drive ability issues, then I would not worry about. IF it is still hard starting, then I would try adding some fuel or starting fluid ot the intake to see if she fires right up when this happens.

Why does my Chevy Silverado not start up?

If the fuel filter has become so contaminated that the minimum amount of fuel has not been let through it, the engine won’t start at all. At the most basic of levels your Chevy Silverado needs three things to start: Air, fuel, and spark. If any of these things aren’t present, the engine won’t turn over at all.

How can I tell if my Chevy Silverado fuel pump is bad?

Testing your Silverado’s fuel pressure on each side of the pump would be the best way to diagnose this problem. A priming fuel pump sounds like a high-pitched whine for a few seconds and can be heard with a sharp engine right after the ignition key is turned, but before the starter is engaged.

Are there any problems with the Chevy Silverado?

Check out our Chevrolet Silverado overview to see the most problematic years, worst problems and most recently reported complaints with the Silverado.

When did the Chevy 4.8L Vortec come out?

The 4.8 Vortec is a small-block V8 engine produced by General Motors from 1999-2013. The engines spanned from Gen III to Gen IV of the Vortec series before being phased out after 2013 in favor of the 5.3 Vortec with Active Fuel Management. The 4.8 Vortec had three different variations throughout its lifespan: LR4 (Gen III)

What’s the price of a 2001 Chevy Silverado?

There is no one perfect vehicle for everyone, so it is difficult to make a broad assessment of the 2001 Chevrolet Silverado 1500. We recommend you read Edmunds expert reviews and consumer reviews to make that buying decision for yourself. When in doubt, ask to test-drive the 2001 Chevrolet Silverado 1500 and see how it feels.

Is the Chevy Tahoe a 5.3 Vortec engine?

In the L20 version, the Tahoe and Yukon were upgraded to the 5.3 Vortec while the Silverado and Sierra remained on the 4.8 platform. Surprisingly enough, the LY2 platform was the only Gen IV Vortec engine to not feature variable valve timing.

Why does my Chevy 350 Backfire at high RPM?

The 90 degree elbow in the PCV Valve hose at the base of the throttle body to the PCV valve is common to either fall off or have a hole in it. Most of the time the engine will idle at a higher RPM a suction sound can be heard.

Why is my GMC Sierra 1500 stalling out?

No change. Next, read somewhere that bad ground wire on Thermostat housing can cause ECM issues. Checked it, cleaned it off, verfied that contact wanhers are all steel and attract a magnet, reinstall the ground wire.

Why does my Chevy truck run like poop?

Cat was gone when I bought it, so it’s not exhaust restriction. Truck runs like poop when cold, but got a little better when warm…..but here’s something weird he found while scanning—-when cold, the timing was all over the place. He finally decided it had bad gas……

What causes hesitation and stumbling in a 1990 Chevy c1500?

An expert that got 10 achievements. Re: 1990 chevy c1500 hesitation and stumbling during… Based on what you said, I would say the engine is starving for fuel. The computer has to be disabled to set timing – there should be a procedure for that. I would start with checking fuel pressure at the throttle body.

What is the TPS code for a 1990 Chevy c1500?

TPS code 22 low voltage 3. MAP code 34 low voltage. 4. IAC valve stuck. 5. timing is off. problems fixed so far. 1.

When did my 95 TBI Chevy stop running?

Timeline and service related incidents— Little over a year ago, it quit a couple times—I mean locked down like the key was switched off. My local indie tech replaced the distributor (O’Reilly’s).

Why does my Chevy c1500 not start up?

SOURCE: No fuel to the injectors on a 1997 Chevy c1500. can be the distributor or maybe the fuel pump let the truck sit and then turn key almost on but not enough to initiate start up and see if you hear pump in the gas tank and if thats not it, it could very well be your distributor it might be moist in the cap or button area

How to troubleshoot a Chevy 4.3 engine?

1 Common Problems. A common complaint with the Chevy 4.3 engine is that it doesn’t idle well, it’s loud and makes awkward noises. 2 Idle Air Control Valve and Throttle Conrtol Switch. Open up the hood and look at all the wires, spark plugs, tubes, vacuum lines and valves. 3 Check Your Oil. 4 Vehicle Fuilds. …

Why is my Chevy 4.3 engine still running?

Checking your vehicle’s fluid levels is always a good idea to maintain the overall longevity of the engine. Once you have ruled out all the basics, you can go back to what the Chevy 4.3 engine is known for: bad idle air control valves and throttle control switches.

Why is my Chevy Suburban bogging down on hard acceleration?

I have a 97 Suburban 5.7, 2wd. On hard acceleration it is bogging down like there is to much air, because sometimes it backfires. Or a plugged exhaust. I replaced the fuel pump-because it was bad in July.

What causes a 1994 Chevy C / K 1500 to bog down?

– CarGurus 1994 Chevy C1500 5.7 bogs/backfires when I give it gas. My truck bogs down (and tries to die) when I give it gas to accelerate off of a stop. There is often a backfire or two when this happens. Pumping the gas does not help. I basically have to crawl through any intersection until it picks up a bit of speed from idle. The truck

What should I do about my 1994 Chevy Silverado?

My 94 Chevy Silverado was also sputtering, backfiring, missing etc… I changed the fuel filter to no avail, tried several things to get it to run smooth but nothing helped’ until a friend of mine who used to have his own shop told me about a memo he had received years ago dealing with this identical problem. here’s what worked for me!

Why does my GMC Sierra 1500 run rough at idle?

The spray smoothing out the rough rpm is an indication of the engine running lean, could be low fuel pressure, could be a vacuum leak. With it running rough at an idle and smoothing out at a higher rpm is a general sign of a vacuum leak.

What makes a 1988 Chevy 5.7 TBI run rough?

1988 Chevy 5.7 tbi runs rough cold and…. Ok here is the deal. This truck has a good motor but it lacks power all the time not like barely moves but it won’t burn rubber. Now when its cold it runs really rough coughing and sputtering.

What kind of engine does a 1992 Chevy Silverado have?

| This 1992 Chevrolet 1500 Shortbed 1/2 Ton Pickup Truck comes equipped with a 305 V8, Automatic Transmission (rebuilt), Power Steering, Power Front Disc Brakes Rear Drum Brakes, Power Windows, More Info ›

Is the 1992 Chevy Silverado 1500 a collector truck?

This 1992 Chevy C/K 1500 is like new. It only has 3k miles folks. This is a collector truck. Keep your comments to yourself regarding price if you feel its too hi… More Info › Gateway Classic Cars of St. Louis is proud to present this 1992 Chevrolet C1500 Pickup Truck! Heres a custom hot rod truck for your enjoyment.

What’s the idle speed on a Chevy Silverado?

Had the BB Tune bump the idle up to 600 at 1000 miles and that seemed to eliminate it for the time being. I’m at 4.5K now and the idle was starting to get rough again.

What to do about a rough idle on a Sierra?

When I had my 2014 sierra, the only thing that fixed my rough idle was raising idle RPM to 600 with a Blackbear tune. Never had issues after that. 500 rpm is just too low. Figured I’d share this since I’ve seen a good amount of people here complain about a rough idle.

What’s the rough idle on a GM Truck?

From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM-Trucks.com as a daily part of their ownership experience. Figured I’d share this since I’ve seen a good amount of people here complain about a rough idle.

Why is my Chevy Silverado running rough at idle?

Really, your Silverado will be running rougher at any RPM, but a misfire will be most pronounced at idle. Spark Plug Wires – While not every model and engine combination of vehicles today comes with spark plug wires (a lot are now coil on plug), if your Silverado happens to have them, they can go bad and cause a rough idle.

How can I Make my Chevy Silverado idle smooth?

I decided to use seafoam spray ( https://seafoamsales.com/sea-foam-spray/) into the intake, let it sit for about 8 minutes. Drive the piss out of the truck and now my idle is smooth as silk and looks like the instant MPG is better by about 4-8MPG.

Why does my Silverado lawn mower not run?

My gas lawn mower was running lousy so I put Seafoan in the gas. Fixed it right up. It wouldn’t work because our engines are direct injection. The Seafoam in the gas would be injected directly into the combustion chamber, and would miss the intake valves completely. It wouldn’t work because our engines are direct injection.

What’s the fuel pressure on a 1998 Chevy k1500?

Here are the tests I’ve done so far fuel pressure test, fuel pressure 160psi while running, then shut off for 20 min and fuel pressure was at 155 PSI. Dry Compression test on all 8 cylinders between 150-160 psi.

What should I replace on my 1998 Chevy k1500?

Here is what has been replaced to try and stop this misfire: spark plugs, spark plug wires twice, distributor cap twice, rotor, ignition coil, EGR, CTS on intake manifold, coolant temp gauge sender, fuel filter, fuel pump, MAF sensor, oil change.

What should I do with my Silverado 2500?

Would have been smarter to put shorter shackles in the back and bring the rear down. Lower your air pressure in your tires. Unless you are towing or hauling heavy loads all the time there is no reason to have over 60 psi in the tires.

How to tell if my 2500 rides too rough?

Re: My 2500 rides too rough need suggestions. measure center of wheel to fender lip with truck sitting on the ground, then jack the truck up and measure that distance again. If you don’t see 3 inches difference then your shocks are to short and the truck will ride like horse pucky because your topping out the shock all the time.

Is the Silverado Sierra GMC truck running too rich?

I have pulled up P0172 (bank 1) Running Rich and P0175 (bank 2) running rich. I have ran a misfire diagnostic with the scan tool with the engine light on and the engine misfires quite a bit, as it will if it is over fuelling. After deleting the codes, the truck seems to run fine and no misfires.

Why is my Chevy Vortec 4300 V6 leaking fuel?

In the L35 and LF6 engines, the spider injectors are known to leak at the pressure regulator and at the supply and return lines due to a design fault. Outside of leaking fuel onto the exterior of the engine itself, it can cause excess fuel to get sucked into the engine.

What causes rough engine idle or TDC code?

So, should the engine misfire, rough engine idle or (TDC) code; point to an air leak in the intake manifold gasket, following the below directions. A very common cause of a leaking intake manifold is the gaskets and bolts used from the factory.

What kind of V8 does a Chevy Silverado have?

My Silverado has the 5.3L V8, so I don’t have any insight to offer, but you are more likely to get responses on the heavily tracked topic, “Chevy Silverado – Continued XVIII”. auto. I don’t have this problem. Is your truck a regular cab with the 3.08 rearend? I would check it out. Also try to test drive another truck problem.

What kind of engine does a chewy silver ADO have?

I just recently bought a 2001 chewy silver ado 1500 with a 4.3L V6 Vortex engine with a 4 speed automatic transmission. I am wondering if my truck has a problem or not. When I accelerate to get on the highway, my transmission shifts 4 times. When it shifts to the final gear and at 65 miles per hour, my RPM are at 1500.

Can you drive a Silverado with a V6 engine?

I see new Silverado work trucks with V6 engines all over town with their tail dragging from a heavy load in the box, and/or a heavy trailer in tow. If I routinely hauled 1000 pounds I would not drive a V6 – I would drive my old 454.

What kind of horsepower does a Chevy Silverado have?

This article applies to the Chevrolet Silverado 1500 (2014-present). Big Chevy blocks produce a lot of horsepower and torque, and can definitely pull some weight. But albeit being strong, they are also known for their smooth revving and quiet running performance.

Why does my Chevy Silverado keep idling?

It could be a sign of a component going bad, or another situation that may lead to bigger problems down the road. That’s why we’ve compiled the most common reasons why your Chevy Silverado may be idling rough. Remember that while some of these are easy tale-tell signs, you may still need to visit a professional repair shop for further advice.

Why are the spark plugs on my Chevy Silverado not working?

Spark Plugs – One of the absolute most common causes (if not the most common reason that your Silverado may be misfiring) is the spark plugs. Although most modern vehicles use iridium spark plugs, they still need to be changed at the manufacturers recommended interval.

Are there any problems with the Chevy Silverado 1500?

Chevrolet Silverado 1500 owners have reported 23 problems related to engine shut off without warning (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Chevrolet Silverado 1500 based on all problems reported for the Silverado 1500.

What kind of idle does a Chevy silveraor have?

Misfire – Rough Idle: Hi, I Have 2009 Chevy Silveraor with About Hi, I have 2009 Chevy Silveraor with about 88,000 kms. Purchased the truck in December and have been having rough idle conditions and what feels to be misfiring (on morning start up, sitting at lights I can feel it, and during the daytime if it has sat for a couple hours).

Why did my Chevy Silverado engine shut off without warning?

Warning lights came on for steering assist while driving down the highway. At this time, the air conditioning and radio turned off, but the engine remained running. Dismissing the alert returned the a/c and radio, and the truck continued running.

What happens when a Chevy Silverado engine shut off?

The engine shut off, brakes went out, steering locked, all electrical shut off. The truck was dead for approx 4 seconds when it kicked back on on its own. The truck continued down the road like nothing had happened.

How big is the fuel tank on a Silverado Sierra?

Hello, I have a 2011 Silverado 4.8 litre 1500 ls. I have had a gradual increase in misfiring at low idle and stalling on start up. At first look a assumed fuel pump was going.

Why does my GMC Sierra keep running cold?

A technician may not inspect the coolant temperature sensor and cooling system. When the engine is cold, more fuel is added to help warm it up to a desirable temperature. If the coolant temperature sensor is not sending the proper signal there is a possibility that the engine ECU may assume that it is always running cold.

Why does my GM V8 engine misfire when cold?

Because, GM V8 engines are very prone to a rough idle and engine misfire when cold. The check engine light may also come on, with codes P0300, P0171 and PO174. But, as the engine warms up, the engine misfire or rough idle tends to go away; which seems confusing.

Why is my GM 4.8l engine running too lean?

The engine may be running too lean, due to a leaking intake manifold. Too lean means too much air and not enough fuel; according to the power control module (PCM) calculation. When the engine is cold, not all sensors function. As the engine warms up the oxygen sensors report the lean condition.

Are there any problems with the 5.3 liter Chevy engine?

The 5.3 engine not only can succumb to engine sludge, but to faulty sensors. While this is a very common problem with this type of engine, it can be frustrating nonetheless. There are some quality oil sensors that will increase the performance.

What kind of engine does a 99 Silverado have?

I have a 99 silverado, 5.3 liter 4×4 137k miles. Runs great when engine is cold. After about 10-15 minutes of driving when engine warms up, engine bogs down, idles rough, and dies when throttle is applied. I ran the codes, had low voltage x4 oxygen sensors, and random misfires. I replaced the 02 sensors because I am well over 100k miles.

What happens when the engine warms up in a Silverado?

After about 10-15 minutes of driving when engine warms up, engine bogs down, idles rough, and dies when throttle is applied. I ran the codes, had low voltage x4 oxygen sensors, and random misfires. I replaced the 02 sensors because I am well over 100k miles.

What kind of transmission does a Silverado 3500 have?

The 2500HD had an available five-speed (six-speed for 2006–2007 models) Allison 1000 transmission with the Vortec 8100 and Duramax 6.6. The Silverado 3500 offered the same engine/transmission features that the 2500HD, however it was usually equipped with “dually” twin wheels at the rear and had a stronger suspension.

What kind of engine problem does 2017 Chevy Silverado have?

The contact owns a 2017 Chevrolet Silverado 1500. The contact stated that while her husband was driving at 30 mph, the accelerator pedal was depressed and the vehicle stalled. The check engine light flashed while the failure was experienced.

When did the Chevy Silverado pickup truck come out?

Introduced for the 1999 model year, the Silverado is the successor to the long-running Chevrolet C/K model line. Taking its name from the top trim level from the Chevrolet C/K series, the Silverado is offered as a series of full-size pickup trucks, chassis cab trucks, and medium-duty trucks.

Are there any problems with my Chevy Silverado?

All of the parts associated with trouble codes C0242, P2127, and P2138 have been replaced without result. This condition could result in the affected vehicles being rearended, or, because of the loss of stability and traction control, result in a roll over. This needs to be addressed immediately.

What causes an Audi A4 to idle rough?

A super lean running engine will often idle rough. The fuel injection systems job is to atomize the fuel into fine mist. If a fuel injector has an issue with this process, it will either let too much or too little fuel into the combustion chamber relative to the amount of air.

How to help me with a Chevy k1500 misfire?

× Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!

Why is my Great Lakes 4×4 running rough?

Also, when you idle the ammount of air and fuel mix is small, less air = less fuel needed for lower engine speed. While your engine is getting more air (vacuum leak) and this little bit of fuel that is being dumped at idle is not enough to creat proper combustion, and could cause your rough running condition.

What’s the fuel trim on a Chevy k1500?

With fuel trims what is of interest in the total fuel trim for each bank so taking the first results bank 1 seems to have a total fuel trim of around +23% and B2 around +8%. +23% is way above what is an acceptable fuel trim and indicates the computer is adding a huge ammount of fuel to counter a lean mixture.

Is the 1998 Chevy Silverado 5.7L hard to start?

Hello all, My 1998 chevy silverado 5.7L Vortec used to start as soon as you bump the key, and now it is hard to start (mainly when its cold) it takes several cranks of the engine to start and after truck warms up its okay, usually in the morning or if the truck sits for several hours after running. (i.e.

Are there any problems with my Silverado engine?

I’ve chronicled my ’02 Silverado engine problems on other threads. Got about 125k on it. I’ve had varying symptoms and problems such as hard starting, especially when wet. Then when I got that fixed, it started to run rough and missing.

Is the silveradosierra 4.3 running rough again?

Not real bad but wouldn’t idle rock steady like it had been lately and a little hard to start. Then, on Saturday, it happened again. On the expressway at about 70 and it just starts bucking, misfiring, backfiring out of the blue and can’t get above 45mph. Pulled over, checked the air filter (which is almost new). Took it out and tried again.

What are the sensors on a Chevy Silverado?

The oxygen sensors that are equipped in your Chevy Silverado are responsible for monitoring the exhaust to help the ECU determine the correct air/fuel mixture. Of all the sensors equipped in your vehicle, the O2 sensors may have it the hardest.

Why does my Chevy Silverado have a rough idle?

Learn if it’s a simple fix or time to seek out a trusted technician. Not your vehicle? Why Is My Car Idling Rough? What are common reasons my Chevrolet Silverado 1500 has a rough idle?

Is the Vortec 5300 rough idle when cold?

I have a 99 1500 with 5.3L. When first started in cooler weather the engine misfires, runs rough. Then it will rev way up and back down to almost stall and sometimes it will stall and I half to restart the engine. After running for a while and the engine warms up it runs great. I was thinking that the O2 sensor might be bad but not sure.

Why is my Chevy Silverado engine not running?

So in theory, if the thermostat is providing an erroneous reading to the engine, it could throw off its entire behavior, and the engine won’t run smoothly until it thinks it has reached that operating temperature (which it may never reach if the thermostat is faulty). Wait until the engine has completely cooled down.

Why does my 99 1500 run rough when cold?

Need a little help. I have a 99 1500 with 5.3L. When first started in cooler weather the engine misfires, runs rough. Then it will rev way up and back down to almost stall and sometimes it will stall and I half to restart the engine. After running for a while and the engine warms up it runs great.

Why does my Chevy Silverado not accelerate at high RPMs?

If your Silverado won’t accelerate, but the RPM’s go up it’s usually not going to be an engine related issue. Somehow, the power that your engine is creating is not making it to the rear wheels. This is typically a transmission related issue. Here are the most common cause of acceleration with the RPM’s going up: 1. Transmission Fluid Low

What should the idle rate be on a 1997 GMC Truck?

Underdog, I don’t know the 1997 5.7, but 1000rpm sounds like a high idle, not where it should “bottom out”. A V8 should idle at 500rpm. GoNDown, did you recently disconnect your battery? After I left mine dead in the yard for a while and didn’t charge it, when I started it up it ran like you describe for a few days and then it was fine.

What’s the misfire code on a 1998 Vortec?

Can someone please help with what I should check next, I have a 1998 Chevy K1500 5.7 Vortec with a misfire, P0300 code for 3 months. runs a little rough, while driving under normal conditions it sputters, hesitates, and also will backfire, under heavy acceleration no noticeable skip, no sputters, and does not hesitate or backfire.

What’s the idle RPM on my Chevy Suburban?

My 1997 Chevy Suburban (5.7) is acting up on me. When I start it up the RPM and idle seem fine. As I let it sit for a couple of seconds the RPM’s slowly begin to drop until they finally bottom out at about 1K. As soon as I put it into Reverse/Drive etc. the RPM’s drop below that mark and it struggles to stay running.

What’s the problem with my 1997 Chevy Silverado?

I have a 1997 chevy 1500 siverado with a 5.7 vortec that has been having a problem for about 6 months now. The truck starts, idles, and revs normally and when accellarating slowly everything works just fine, but once you get past half throttle it falls on its face and acts like it has a clogged fuel filter or bad fuel pump.

What’s the idle RPM on a 99 Vortec?

Truck recently had an exhaust manifold replaced. When its cold (as in first thing in the morning), it fires right up and high-idles for a few seconds and runs fine. After the first few seconds, its idles rough. The engine struggles to keep it above 7-800 RPM.

How does the Vortec rough idle in the winter?

When its cold (as in first thing in the morning), it fires right up and high-idles for a few seconds and runs fine. After the first few seconds, its idles rough. The engine struggles to keep it above 7-800 RPM. When its in gear at idle (like a stop light), it struggles to stay above 500 RPM, and will occasionally stall.

What happens when engine heats up to operating temp?

As the engine heats up the ring-cylinder mate becomes looser so that the engine will run smoother and easier…but if there is too much wear the combustion gases will begin to blow by the ring-cylinder surfaces and will cause each stroke to lose power.

What should coolant temp be when engine is hot?

With a good OBD2 code reader, you can also check the live data and the parameters of the CTS sensor. Check that the temperature value of the CTS is around 80-90c when the engine is hot. A lot of engine coolant temperature sensors have two wires and the sensor is controlled by Ohm.

What are the symptoms of a bad coolant temperature sensor?

Hence, it is advised to have your car inspected right away to avoid any serious problems. Here is a more detailed list of the common symptoms of a bad coolant temperature sensor. One of the first symptoms you will notice is that the check engine light will activate.

Why is my Chevy silveraor idling at 44?

Was loosening fuel PSI when it starts idling rough from 60psi to 44. So changed fuel pump, just changed canister purge valve after a $200.00 diagnosis from a well known shop and also came out a hole in the bladder of brake booster They said.

How can I tell if my Chevy silveraor is running lean?

The extra unburned oxygen in the exhaust is detected by the oxygen sensor as a lean condition, and the Engine Computer reacts by commanding more fuel from all the injectors on that side of the engine, even those that weren’t running lean. Your mechanic can find evidence of that with a scanner by viewing the long and short-term fuel trim numbers.

What’s the fuel Gage on a 1993 Chevy truck?

Fuel gage never wavered at 12-13 psi. MAP around 2.9v when PW 2.8MS when truck seemed to be falling a little flat under brake torque. This thing is really close to getting a carburetor on it.

How does a GMC Sierra 1500 fuel pump work?

The older model has steel lines coming off of the top of the pump to the frame rail and then connects to the frame steel lines with short hoses, you’ll need line wrenches and the ability to curse. The newer style has plastic tubes from the plastic pump casing and uses those quick connect fuel fittings and you’ll need the disconnect tool.

What should fuel pressure be on 1993 Chevy TBI?

Verify there is 18-20 of fuel pressure when you dead head the fuel pump. If low, verify there is good power and ground to the fuel pump and that the fuel filter is clear. Also, make sure that the MAP sensor vacuum port in the throttle body is not restricted.

What kind of fuel pump does a Chevy truck use?

Fits perfectly for any 1988 to 1998 fuel pump in a Chevy truck. Fuel pump is great and I haven’t had any problems with it. Also the warranty is good to have, always. Pages with related products. See and discover other items: 94 silverado, 95 gmc sierra, 1989 gmc sierra, pump fuel, parts for chevy 1989, 1992 gmc parts

What should the fuel pressure be on a Chevy Cheyenne?

93 Chevy Cheyenne k3500, if it is running the Chevy vortec engine the fuel pump pressure is way too low, should be 56 psi+ depending on CSFI/CPI system or it will not start or open injectors, with out the aid of starting fluid. The factory manual specifies that the fuel pressure for the CSFI system should be between 56-62 PSI.

When to change the engine oil in a GM Truck?

Check the engine oil and coolant levels daily. At 600 Miles change the engine oil and filter using conventional (non-synthetic) oil. Check fuel and ignition settings; adjust valves (where applicable). After the first 5,000 of service synthetic engine oil may be used.

Why is my car running rough with oil topped off?

I suspected that it could be oil pump originally, thinking that maybe at a lower oil level the pump isn’t lubricating the engine properly, creating friction, causing the engine to lag, etc. But its still running rough with the oil topped off now and the # 1 Ho2 sensors are reading way below their normal values.

What are the symptoms of a Chevy Vortec engine problem?

Symptoms of Failing Idle Control Valve and Throttle Position Sensor 1 Rough idling 2 Engine stalling 3 Hesitation during acceleration 4 Hard shifting and lack of power 5 Lack of accelerator responsiveness 6 P0122 engine code (TPS sensor)

Are there any problems with the Chevy 4.3 Vortec engine?

The 4.3 Vortec engines made from 1996-2002 (L35 and LF6) have been reported to have engine knock problems. In a properly functioning engine, fuel burns in even pockets instead of all at once. The pockets burn in even timing, in sync with engine cycles. Engine knock occurs when the fuel burns unevenly and out of sync with the engine cycles.

What happens when the EGR valve gets stuck on a GM 4.3L?

This tutorial addresses a very common problem I’ve seen on the 1987-1995 GM 4.3L, 5.0L, and 5.7L engines with throttle body fuel injection system: a stuck open EGR valve. And when the EGR valve gets stuck open, it’ll cause a rough idle condition that may hard to diagnose.

How is my 1994 S-10 4.3 running?

Starts fine, even today when it was -15, fuel pressure 52 running, holds after shut down, newer plugs/wires/cap rotor, tested MAP sensor and tests good, tested resistance changes in TPS (with sensor out) and changes were smooth along range, unplugged every sensor I could find individually looking for changes, no luck.

Is it OK to run rough at idle?

Heading for home after it sat for 3 hrs it started a little hard and was running rough until it warmed up and it was fine the rest of the way home (30 mile trip, mostly at 70 mph hiway). Got home and it would start but run rough at idle.

What to do if your Chevy truck is running?

Hate to say it, but you need to inspect all the ignition parts for causes of multiple misfire or cross fire. The plugs first of course, then work through wire inspections and ohm checks. In the cap, you may find carbon tracking, and wear, aftermarket anomalies in the parts.

Why is my Chevy truck in lower gear?

Because a stuck modulator would cause it to be in a lower gear and it would accellerate well up to the shift point. A bad running engine would have a weaker vacuum signal and not have the modulator in play to delay an upshift.

What did the Chevy C / K look like in 1971?

1971 goes all-in on the egg crate grille design, pasting the Chevy logo in the middle and banishing the horizontal bar. Parking lights migrate to the bumper, while a black frame is drawn around the grille itself. 1972 deletes the black grille line, but maintains the status quo elsewhere in terms of exterior design.

How many Chevy C / K pickup trucks are there?

This explains, in part, why there were so many of these trucks built: more than two million half-tons alone, with a sizable number of three-quarter and full-ton heavy-duty trucks on top of that number (models that, like the GMC-branded C1500/K1500, are similar in many ways but which are outside the scope of this buying guide).

Are there any short bed Chevy pickups left?

Drawing the most dollars are the short bed variants of the pickup, which are the rarest models from a sales mix that accented longer, task-focused cargo beds. It’s a state of affairs that has also spawned a number of imitators.

What are the different trim levels of a Chevy truck?

Trim levels for the Chevrolet truck included base, Custom, CST (Custom Sport Truck), Cheyenne, Cheyenne Super, and Cheyenne Highlander. In terms of gear, you can think of them essentially in that order in terms of how many niceties and features were included.

What kind of noise does a Chevy 4.3 make?

by Contributor. A common complaint with the Chevy 4.3 engine is that it doesn’t idle well, it’s loud and makes awkward noises. Examples of this are staling, lurching and poor acceleration. Poor idling and loud engines usually go hand-in-hand.

What to look for in a Chevy 4.3 engine?

Look for corrosion, breaks, exposed wires and loose connections. Considering the Chevy 4.3’s reputation, the broken wires and valves you find are probably related to the IAC and TCS. However, It’s best to double-check your car’s manual to pinpoint exactly what you are looking at.

Why does my Chevy Silverado lose engine power?

Keep reading to find at least one possible answer to “Why is my Chevy Silverado losing power?” Read More: How Can You Tell If Your Pickup Is Overloaded? If your GM truck occasionally loses the ability to accelerate and warns you of reduced engine power, that could be caused by a faulty throttle body.

What’s the Check Engine light on my Silverado?

Hello all I have a 2009 Silverado 1500 LT 5.3 with 93K and she’s been acting up the last couple of weeks. The check engine light came on throwing code p0305 which is a misfire in cylinder 5.

How can you tell if your car has low engine power?

Check your tires’ inflation pressure. If underinflated, your tires will drag on the road. Check inflation pressure with a tire pressure gauge when the tires are cold. Inflate tires 1 to 3 psi below the maximum pressure marked on the sidewall of your tires. Even if the check engine light (CEL) hasn’t come on, scan your computer.

What happens when a Chevy 6.0 engine misfires?

There are quite grave consequences when a Chevy 6.0 engine misfires. The engine could get damaged even more, or you might experience more emissions or witness lesser fuel efficiency. This issue is known to be there in various Chevrolet models. 8. Chevy 6.0 Vortec Engine Shutting Off

What causes check engine light on Chevy 6.0?

A check engine light due to low oil pressure is a common complaint in GM ( General Motors) vehicles years 2007-2016 that have V8 engines. It is also known as DOD (displacement on demand). The symptoms occur with no engine-related noises during a low oil pressure condition. Some technicians say to replace the oil pressure sensor.

Why does my 5.3 liter Vortec make a ticking noise?

Causes of Startup Noises in a 5.3L Vortec Valve Lifter. Lifter tick is a common occurrence in V-8 engines like the Chevy 5.3-liter Vortec. This ticking sound is caused by the valve lifters, which are filled with oil during engine operation.

How long does a Chevy 4.3L Vortec engine last?

3 vortec is a very strong and reliable motor, proven by it being the longest lasting production vortec engine. Generally, these engines are extremely capable of lasting up to 300,000 miles.

What causes engine knock on a 4.3L Vortec?

Engine knock can be caused by a ton of factors, such as low-grade fuel, bad spark plugs, carbon build-up, etc. Engine knock is terrible for your engines internals and can cause serious damage to the pistons and to the cylinder walls. On the 4.3L vortec, the cause of the engine knock has not necessarily been figured out, still to this day.

3 vortec is a very strong and reliable motor, proven by it being the longest lasting production vortec engine. Generally, these engines are extremely capable of lasting up to 300,000 miles.

How does the Chevy throttle body injectors work?

by Lee Sallings. The throttle body injection system used by Chevy was a natural progression from the carburetor previously used. Pressurized fuel is strained through screen-type filters before it is introduced into the engine through a pair of injectors located above the throttle body’s venturi and throttle plate.

Where are the fuel injectors located on a Chevy?

Pressurized fuel is strained through screen-type filters before it is introduced into the engine through a pair of injectors located above the throttle body’s venturi and throttle plate. Over time, varnish and sediment clog the screens and injectors, causing inefficient fuel atomization.

Where are the fuel lines on a Chevy?

It is the larger of the two fuel lines attached to the back side of the throttle body. Remove it from the throttle body and plug the fitting in the throttle body with an adapter from the kit

What makes a 95 TBI Chevy run crappy?

2–EGR….did you use the VIN # and go to the dealer for the correct one? to test it ,disconnect the vacuum line and plug it and go for a ride. 3–When I removed the cat on mine ,the 02 sensor set the check engine light on and was going thru more gas but didn’t run crappy.

Why is my fuel injection system plugged in?

The electric fuel pump installed for a fuel injection system will draw considerable more volume of fuel from your tank than your old system did. If there are any contaminants in the tank this many times will plug up or greatly restrict the flow of fuel to the system causing many issues. Step by Step Troubleshooting guide.

What causes a vacuum leak in a fuel injection system?

Vacuum leaks are the leading cause of installation issues with your fuel injection system. Check all sources of potential vacuum leaks including components not related to the fuel injection system. There are instances where the vacuum leak is coming from the adapter plate used to attach the throttle body to the manifold.

How to test for fuel spray during crank?

This is to be an ignition 1 (ING1) source which is power in both the key run and crank position. Correct the connection of this wire and verify voltage to the pink wire on the injector connector. Test again for fuel spray during crank. If the engine still cranks, is spraying fuel, but will not start go to step 2.

What kind of engine does a 1999 Silverado have?

Problem vehicle, 1999 Chevrolet Silverado 1500 5.3L V8 2WD with 351,000mi. I’ve read numerous threads on the rough idle cold start and the engine having some sort of intake leak and I don’t believe I have this problem, but I could be wrong.

Is there an increase in rpm on a Silverado?

I have sprayed carb cleaner all around the intake, throttle body and vacuum lines while it’s idling rough and did not get an increase in rpm.

What does it mean when your car Idles smooth?

Smooth idling indicates that your engine’s fuel and air are mixing just right. What is rough idling? If your vehicle’s idle is rough, possibly rising and falling, or having difficulty maintaining a steady rate of rotation, you may have a problem that needs fixing.

Why does my envoy have a gasoline smell?

Traced the gasoline smell to a leaking FPR, gasoline smell fixed but rough idle continues. I admit I didn’t check the intake bolts behind the little hose, but none of the other bolts were loose and I sprayed some starter fluid around that area with no change in rpm.

What does it mean when your car has oil deposits?

Carbon deposits may indicate a too-rich mixture or a spark that is not strong enough. Oil deposits can mean that your piston rings are worn or your valves are leaking. Ash deposits might tell you that you are using poor quality fuel or that you have an oil leak.

How can you tell if your car has a rough idle?

Share it! It’s easy to tell when your car has a rough idle: When you start the engine, it won’t run at a steady rate. It may almost stall, or it may run at varying RPMs without your putting your foot on the gas, or it may do both. There can be a variety of reasons why your vehicle is idling roughly.

Why does my vacuum have a rough idle?

Leaks in these hoses and in other parts of the vacuum system can be another cause of a rough idle, often because of a lean air-fuel mixture from excess air entering the system.

What causes a Chevy Silverado to run rough?