How can you tell if your Chevy Silverado fuel pump is going out?

The only way that you are going to know that your Silverado’s fuel pump is going out is that it is no longer providing enough fuel pressure to keep the engine running under a heavy load, or at high-speed. Typically, if you are heading up a hill (or accelerating) the engine may start to feel like it is just running out of steam.

Can a bad fuel pump start a truck?

Yes and have nothing. Well getting to start by adding fuel to the throttle body is not going to turn on some special switch that will send a signal to the pump and injectors. I’m sure you probably just have a bad fuel pump that doesn’t have enough pressure or volume to start the truck, but at running speed can keep up.

Is there a way to turn on the fuel pump?

There’s no way you have no signal, but then starting the truck by adding fuel will then turn on the injectors and pump. That’s just crazy. Good luck with that one. Once the truck starts and is running you can remove the jumper to the fuel pump and it will continue to run.

What does a bad fuel pump sound like?

One of the most common signs that a fuel pump is going bad is a whining sound. The whining sound can indicate that the fuel pump is going out before there are any performance based issues. Keeping an open ear can save you from getting stuck somewhere with a bad fuel pump. It’ll sound like a low frequency buzzing sound.

What happens when the fuel pump goes out on a Chevy Silverado?

There are physical signs that you can feel when your Silverado’s fuel pump is going out. Before taking anything apart, check to see if your engine’s computer has any trouble codes saved in it. The engine may throw a P0087 trouble code. This trouble code detects that the fuel rail/system pressure is too low.

What are the symptoms of a bad fuel pump?

Here are the most common symptoms of a bad fuel pump in your Chevy Silverado: One of the most common signs that a fuel pump is going bad is a whining sound. The whining sound can indicate that the fuel pump is going out before there are any performance based issues. Keeping an open ear can save you from getting stuck somewhere with a bad fuel pump.

Why does my Silverado have a trouble code P0420?

If you get P0420 or P0430 trouble codes with a scanner, it very well may be the catalytic converter causing these symptoms. One of the best indicators of a clogged fuel pump is going to be that the your Silverado is difficult to start. This because there’s not enough fuel pressure to properly atomize the fuel as it enters the combustion chamber.

Why does my fuel pump not start when I change it?

You always want to replace the fuel filter when replacing the fuel pump. This could cause the concern you are having. It may seem as you are getting enough fuel from the pressure regulator but if the pressure from the fuel tank is not correct, it will still not start. Another problem you could be having is spark.

Where is the fuel tank in a Chevy Silverado?

But, at the top of the tank near the front corner, there is a plastic 90 degree elbow sticking out. I looked around, and then found a plastic vent line that was left hanging. This could explain why it leaked only when the tank was full or near full.

Why does my Chevy Silverado not start after fueling?

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. Well I developed an issue this past Wednesday. After filling up the truck she I went to start it up it wouldn’t. Acted like it was starting. All the dash lights came on.

What are the symptoms of a bad fuel tank sensor?

If your fuel system does have a pressure problem, you’ll see these signs: Your check engine warning light comes on. Your fuel consumption increases noticeably. A loss of power and acceleration. Hard starting.

Is there a fuel leak at the top of the tank?

I dropped the tank down in order to see the top of the fuel pump and the fuel lines, started the truck up, checked around, and couldn’t find any leaks. But, at the top of the tank near the front corner, there is a plastic 90 degree elbow sticking out. I looked around, and then found a plastic vent line that was left hanging.

Why does my car not start with a fuel pump?

Car Will Not Start Virtually all modern vehicles with internal combustion engines come equipped with fuel pumps. The fuel pump is responsible for delivering fuel from the gas tank to the engine at the appropriate pressure required for performance demands.

Why does my Chevy Silverado not idle after a cold start?

My 89 Chevy Silverado would not idle after a cold start I took the PCV valve out and sprayed it with carburetor cleaner….no more problems!!! 5 people found this helpful. One of the MOST overlooked parts of these TBI engines is the distributor pickup coil.

Is there no fuel from injectors to start truck?

No fuel from injectors to start truck. When I try and start my 93 Chevy Cheyenne k3500 no fuel come out of the injectors. If I use starting fluid the truck starts and the injectors work great. Has died a couple times while driving, but mostly runs fine and then won’t start one turned off.

What causes a Chevy C / K 1500 to drop in idle?

In order to change these, you have to completely removed the distributor and completely disassemble the distributor to get the pickup off and replace it. These components are very sensitive and when failing, will cause misfire, idle issues, and cause it to burn rich as well. 11 out of 12 issues like this are because of this pickup coil.

Why is my idle air control valve Dirty?

28 people found this helpful. Your idle air control valve is either dirty or faulty. 28 people found this helpful. the problem is there are lots of possibilities. Dont go replaceing things randomly, have them tested. Possible thins are: TPS, IAC, vacuum leak, fuel pressure regulator, bad injector, worst case scenario the pcm has messed up.

Why does my Chevy k1500 stall when gas is released?

I have been working on our 89 Chevy K1500 and am still having an idle issue. The truck idle drops and lopes and occasionally completely stalls. This usually happens when driving slow in town… backing out of parking space, letting off gas when coming to a stop sign or to park etc. It does fine to start and accelerate.

Why does my car not start at the rail?

I have no fuel preserver at the rail but got great fuel pressure at the fuel filter . This all started while I was driving and when I went to take off from the stop light the car just shut off and won’t start up it cranks but won’t fire up .

Why is there no pressure on the fuel rail?

If the pressure at the exit side of the fuel filter is normal and yet the pressure on the fuel rail is essentially zero, it’s possible the fuel pressure regulator has failed wide open, essentially preventing sufficient pressure from building.

What to do if your fuel pump goes bad?

If there’s been zero warning that the fuel pump could be going bad (hesitation, difficulty starting, etc) then it should not be automatically assumed that the fuel pump is at fault. Here’s a great youtube video on how to test a fuel filter:

What does it mean when a Chevy truck won’t start?

It has spark as evidenced by putting an old spark plug into a spark plug wire and grounding the plug After spraying a small amount of starting fluid into the air intake tube, the engine starts for just a moment, then dies Three or four years ago the truck had the Reduced Engine Power warning problem.

How can I tell if my fuel pump relay is faulty?

2. Engine does not start. Another symptom of a faulty fuel pump relay is an engine that does not start. If the fuel pump relay fails the fuel pump will be left without power. The engine may still crank when the key is turned, however it will not be able to start due to lack of fuel.

What to do if your fuel pump has no power?

Check the ECM B fuse located in the under hood fuse box. This is the power supply to the fuel pump and relay. If the fuse is bad, then replace it to see if the fuel pump has power. The truck may start if the fuse is replaced but you will still need to replace the pump.

Why does my Chevy fuel pump keep failing?

The Chevrolet service bulletin states that the cause of the repeat failures is due to worn or damaged electrical connectors at the fuel pump assembly. When you get the Delco replacement parts it comes with a new connector on the fuel pump side.

Where is the connector on a Chevy fuel pump?

When you get the Delco replacement parts it comes with a new connector on the fuel pump side. The problem is the connector on the vehicle side of the harness. In the online Chevrolet repair manual I use, a Tech Tip states, the connector should be replaced with the fuel pump assembly.

Why is the priming pump on my Duramax not working?

Priming Pump/Filter Housing. Truck won’t start: Chevy Duramax | Performance Boats Forum Priming Pump/Filter Housing. Truck won’t start: Chevy Duramax Did a search and still was not comfortable with the results if found. I was ready to leave for a trip a couple of days ago.

Why is my fuel pump not producing pressure?

The fuel pump is able to create pressure using electricity but if it is not getting the adequate voltage of electricity it will not be able to function properly. Consequently, the fuel will not be released at the perfect pressure and your car will lose efficiency.

What’s the fuel pressure on a Chevy Silverado?

Ok…So I get 55-58psi with the key on/engine off, for about 2 seconds while the pump is on. as soon as the pump stops it drops do about 52psi. the truck refuses to start. Cranks fine, and seems like its about to start but just dies.

What should the PSI be on a Vortec fuel pump?

TBI should be 15-18 psi, vortec is probably about 45 psi. Finally the most important item, IF YOU DO NOT READ ANYTHING ELSE READ THIS. Never crank one of those things with the coil wire disconnected. If you must crank it disconnect it from the distributor and ground it.

What happens when fuel pump does not start?

The pump will trigger on the start circuit and run for about 15 seconds. If it does not sense oil pressure it will quit.

What should fuel pressure be on a cold start?

PRESSURE is low for a cold start. make sure the gage is not inaccurate. is the needle on zero when off. if its above zero this may be showing more than what you have. droping a few psi is normal on pump shutdown however the pressure is low for a cold start in the temps you now have outside. it only takes a little bang to throw the gage cal off.

What does it mean when your fuel pump is bad?

This means that the fuel pump is bad, even if you spray starting fluid down the throttle body and your vehicle Starts. If the engine does not get at least 50 PSI when cranking, it won’t start (and is the surest indicator that the fuel pump will go completely bad in short).

When did the Chevy fuel pump come out?

It started on Chevrolet truck models from 1996 to 2003 model years, but has expanded to other models as the connector and pump assemblies are not aging well. In fact, I have a financially strapped friend with an 04 Silverado that now caries a heavy rubber mallet in the truck.

Why does my Delco fuel pump keep failing?

Oh and don’t forget the Cadillac Escalade is also included. The Chevrolet service bulletin states that the cause of the repeat failures is due to worn or damaged electrical connectors at the fuel pump assembly. When you get the Delco replacement parts it comes with a new connector on the fuel pump side.

What happens when a fuel pump goes bad?

The engine turns off if the combustion chamber’s fuel is inadequate or doesn’t have the proper pressure. The part that ensures none of this happens is the fuel pump, and it cannot work perfectly if the fuel pump relay develops any issues. A faulty fuel pump relay can also cause the engine not to start at all and be completely dead.

When is the fuel pump relay turned on?

The fuel pump relay is an important component of the fuel system of your vehicle. The fuel pump relay gives the fuel pump power when it is time to build up fuel pressure in the rail. Whenever you turn on the ignition of your vehicle, the fuel pump relay is turned on. There are different reasons due to which the fuel pump relay fails.

How do you Drop the fuel tank on a Chevy Silverado?

This article will walk you through the second method of dropping the fuel tank. Open the hood. Pull the fuel pump relay from the fuse box. Start the vehicle and let it run until it shuts down. Figure 1. Pull the fuel pump relay and start the engine in order to relieve gas pressure in the line and the pump.

When to replace the fuel pump on a Chevy Silverado?

If your Chevrolet Silverado isn’t performing the way it once did, or if you feel like you’re stepping on the gas pedal and not much is happening, it may be time to replace the fuel pump. This article applies to the Chevrolet Silverado (1999-2006).

What causes a fuel pump to stop working?

However, this can happen due to several other reasons, such as a choked fuel filter, so you should always properly diagnose your car before replacing any parts. If the fuel pump relay may have any bad solderings inside it, it might suddenly lose the relay connection and stop delivering power to the fuel pump.

What are the symptoms of a bad fuel pump relay?

A bad fuel pump relay can cause many different symptoms. Here are the most common ones The fuel pump relay is an important component of the fuel system of your vehicle. The fuel pump relay gives the fuel pump power when it is time to build up fuel pressure in the rail.

Why does my Silverado 1500 engine not start?

Restarting the engine from this state may be difficult. The fuel can vaporise due to being heated by the engine, by the local climate or due to a lower boiling point at high altitude. A vapor lock is more likely to develop when the vehicle is in traffic because the under-hood temperature tends to rise.

What causes the fuel pump to not start?

The fuel pump is running and delivering normal pressure to the engine But, with all that working your engine still will not start. So, the most likely cause, is that the fuel injectors are probably not opening. The (PCM) uses the trigger signal from the crankshaft position sensor; and/or camshaft position sensor to pulse the injectors.

Why does my GM 4.3L engine not start?

No Start Condition Basics There are three very basic components that the engine, in your GM vehicle, needs to start and they are: Air, Fuel and Spark. When your 4.3L, 5.0L or 5.7L GM vehicle cranks but does not start, it’s because one of these components is missing from the mix.

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.

Why does my Chevy Spark Plug not start?

Chevrolets have a common issue with fuel filters getting clogged. You always want to replace the fuel filter when replacing the fuel pump. This could cause the concern you are having. It may seem as you are getting enough fuel from the pressure regulator but if the pressure from the fuel tank is not correct, it will still not start.

Can a bad fuel pump cause a car to not start?

Troubleshooting The Fuel Pump (GM 4.3L, 5.0L, 5.7L). A bad fuel pump will make your 4.3L, 5.0L, or 5.7L throttle body fuel injected pickup or SUV crank but not start. Here are some more specific symptoms: The ignition system is creating and delivering spark to the spark plugs.

How to check fuel pressure in a C / K 1500?

Get a pressure tester and check it. I have a feeling it is the fuel pressure regulator 120 people found this helpful.

What happens when fuel injectors go bad in Chevy Silverado?

There are two main ways that your injectors can go bad. The first is for them to become clogged, dirty, or unresponsive. When this happens not enough fuel enters into your Silverado’s combustion chamber. The other way is if the injectors are leaking. When they leak, they can really do some damage.

Why does my Chevy Silverado smell like fuel?

Any gas that is not fired and sent out as exhaust ends up in the oil pan. When this happens it can decrease your Silverado’s engine lubrication to the point that it’ll lock up. You will smell fuel on the dipstick. The Smell of Fuel – When your engine is getting too much fuel, your Silverado can’t burn it all.

What should the fuel pressure be on a 2001 Chevy Silverado?

Here is how you use it. Please feel free to ask a question or leave a comment. By the way, the normal fuel pressure for a 2001 Silverado is 50~55 PSI. Loading…

Can you test the fuel pump on a GM Truck?

And although GM did not include a Schrader valve to which you could connect a fuel pressure gauge, it can be tested with one to find out if the fuel pump is producing the correct pressure (or not).

How to test the fuel pump on GM TBI fuel systems?

One method involves removing the fuel filter and using an adapter, that has a Schrader valve on it, in its place. You then connect your fuel pressure test gauge to this adapter. The other method is to use an adapter between the throttle body assembly and the pressure line.

How to troubleshoot fuel pump in GM 4.3L?

Once the intake air duct is back on the throttle body, have your assistant, inside the vehicle, crank the engine. 1.) The engine will start momentarily and after a few seconds will die. 2.) The engine will only crank but not start at all. 3.) The engine will start and stay running. OK, let’s find out what your results mean:

How do you start a GM fuel pump?

Open the throttle plate, manually, and spray starting fluid down the bore. When you have sprayed a good squirt of starting fluid, quickly reconnect the air duct to the throttle body (you don’t have to tighten the fastener).

Is there a 2004 GMC 2500HD with no fuel pump?

Recently purchased a 2004 GMC 2500HD, 84000 miles on it. Ran like a champ from June to November.. The minute the cold rainy weather came, have now had 5 times the truck completely dead, no start, no click, no fuel pump, Nothing.

Why does my Silverado 2500HD not start up?

No power to the pump. No click of the starter, absolutely no sound of anything starting up at all. Delay has replaced the fuel pump relays, works for a day or two, then go to start it, nothing again. No crank from the starter, no sound of the fuel pump, but power to the dash lights.

Where is the fuel pump on a Chevy 3500HD?

Raised the dump body and it was right there behind the forward fuel tank mounted on the frame rail. 15 minutes later, I gave the truck a start and that new pump gurgled into life emptying the rear tank into the forward tank and raising my fuel level. Yippee. I’m so happy I fixed this fuel curse I’ve been shouldering for a few months.

Why does my Chevy Silverado not take gas?

My 05 2500 hd silverado had a check engine light on, which when read by a scanner said “evap, large leak” So I ignored it and contiued to drive it. Then recently I would stop to fill er up and the tank wouldn’t take gas at any more than a snails pace.

What to do if your Chevy fuel pump fails?

Chevrolet fuel pump failures are a common and growing problem. If you have a fuel pump harness connector that looks like the flat one on the right or the square one at the bottom, then consider replacing it when replacing the pump. More details about this are below, but you might want to download your Chevy manual to help.

Is the gas pump the same on the 3500?

For the side by side (L+R) tanks for the 3500, there is a porportional valve shown in the harness shared by both tanks. Both tank sending units/pumps seem to be the same PN. I have to suspect the selector or rear pump.

Why does my Chevy Silverado get a clunk when stopped?

At a few thousand miles began getting a clunk when stopped. Had the truck in to dealer 7 times in the last 5 years to have yoke serviced with high temp grease. Transmission had to be pulled and seals redone at 12,000 miles. Clunk and stabilitrak failure light came on at 82,000 miles, 5 months out of warranty.

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…

What happens if the fuel pressure regulator fails?

The fuel pressure regulator controls the fuel pressure in the fuel rail. If there is something wrong with the fuel pressure regulator, it can create too low or too high fuel pressure in the rail. It is not very common that this part fails, but it can happen.

What makes a 2000 Chevy 4.3 truck not start?

7,686 satisfied customers 2000 Chevy 4.3 truck start won’t start runs little rough 2000 Chevy 4.3 truck start won’t start runs little rough fuel pump new think it’s fuel pressure regulater … read more Roy Belding 7,686 satisfied customers

What should I do if my 2000 Chevy Silverado dies?

2000 chevy silverado starts then dies repeatedly has a new fuel pump fuel pressure regulater and mass air senser 2000 chevy silverado starts then dies repeatedly has a new fuel pump fuel pressure regulater and mass air senser – Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website.

Why does my Chevy Silverado start and then die?

Shane the truck is shuting itself down either killing the fuel or the ign. it starts strong and then dies if It was the intake manifold gasket it would not run fine when it was running rite?

What are the symptoms of a bad fuel pressure regulator?

The symptoms are very noticeable, too. You may notice a very rough idle, rough acceleration, slow acceleration, and vibrations from the engine. There are also many causes of engine misfires. It can be a problem in the spark plug or the ignition coil.

Why does my fuel pump not turn on?

If so, the problem is either a short in the relay control circuit, or a bad ECU. If the relay’s power circuit is not energized, then you’re just going to have to start following the wire back from the pump to the relay, checking every so often to find out where power is shorting into the circuit. 17 people found this helpful.

Why is the fuel pump still running in my Dodge Daytona?

We changed it n battery was still being drained. It all boiled down to the fuel pump relay. After turn vehicle “off”, keys removed from ignition, we could hear the fuel pump still running. WE removed the fuse, and it’s still running.

Why does my Silverado keep running without the key?

SILVERADO3 ill take a look i really dont like to mess wit the truck being that that seem to be like an electrical problem dont want to mess anything up more than what already is but doesnt hurt to try thanks ill let you know what i come up with.

Why does my fuel pump not prime with the key on?

Fuel pump doesn’t prime with key on. I’ve been trying to figure this out for a couple days now. My 01 Tiburon wouldn’t start the other day. It would crank, but wouldn’t fire. When I turn the key to the “on” position, the fuel pump doesn’t kick on.

Why is the fuel pump relay not closing?

If jumping the fuel pump relay makes the pump run, and if the relay tests good. Then you need to determine why the ECM is not telling the relay to close. Start by testing continuity back to the ECM. Here is the electrical diagram for the 01 Tib Fuel Pump Relay

What to do if your fuel pump won’t start?

Ugh…..I hate chasing down electrical problems. If jumping the fuel pump relay makes the pump run, and if the relay tests good. Then you need to determine why the ECM is not telling the relay to close. Start by testing continuity back to the ECM.

What to do if your fuel pump is not working?

If nothing after that, then the fuel pressure regulator is not working and needs replacing. If you get pressure to the rail, then there could be a problem with the injectors; they may be either dirty or plugged up. Take the injectors off the engine and clean them with CLR.

Why does my 96 Chevy Express van not start?

Also had a similar issue spin and no start with a 96 Chevy Express Van with the 5.7L. This vehicles issue turned out to be a shorted pink wire in the wiring harness that runs up the passenger side of the block. The vehicle had died while driving several times and wouldn’t start. Then, finally after blowing a couple fuses, would start at all.

What causes a car engine to not start?

A plugged-up fuel filter will cause an engine not not start. Get a fuel pressure tester and hook it up to the fuel rail. There should be a shrader valve on the fuel rail that you can hook the tester up to. Turn on the key. With the engine off and key on, there should be 45 to 60 PSI on the gauge.

Why does my fuel pump fail when I restart the car?

So when you restart your car, the pump runs hot and un-primed until it can refill the fuel chamber. Over time this will burn out the pump motor. This is why many pumps fail right after shutting off the car and restarting it while it is hot.

What causes a car to not start with no gas?

Problem may be at wiring connector on top of fuel tank (hard to reach!). No gas in fuel tank (Check the fuel gauge, and keep in mind the gauge may not be reading accurately). Bad gas (Contaminated with water or too much alcohol or diesel fuel). If you just filled up with gas and now your car won’t start, suspect bad gas.

Where to check for no start fuel pump?

The first thing you want to do is check the fuse panel to see if the fuse is blown. If your car has two fuse panels than the one in the engine compartment; should be the correct one to check. The fuse panel or circuit box is usually located near the battery; and is a small black box with a removable lid.

What to do if your car won’t start unless you give it gas?

Resolving car won’t start unless I give it gas problem To diagnose the fuel pump, an amp clamp is placed over the positive pump-wire. Next, start the vehicle and use a voltmeter to set and record the amperage reading. Then, compare the recorded readings to the manufacturer’s defined specification.

Truck was at half tank before I started filling and wouldn’t take any gas in. Tried a different station the next day with same result. Dropped off at dealer and they were not able to find any issue. They put 5 gallons in just fine. Dealer couldn’t recreate, and no TSBs, so did nothing. I picked it up and filled it just fine.

How can you tell if your Chevy Silverado fuel pump is going out?