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.

Where is the fuel pump on a GM Truck?

As you’re already aware, the throttle body fuel injection system on your 1987 to 1995 4.3L, 5.0L, or 5.7L pickup (or SUV) uses a low pressure (12 PSI) electric fuel pump located in the gas tank. 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 …

What are the symptoms of a bad fuel pump?

Symptoms Of A Bad Fuel Pump. Where To Buy The Fuel Pump And Save. TEST 1: Using Starting Fluid. TEST 2: Fuel Pressure Test With Gauge. Which And Where To Buy A Fuel Pressure Gauge. More GM 4.3L, 5.0L, 5.7L Tutorials. You can find this tutorial in Spanish here: Cómo Verificar La Bomba de Combustible en Los Sistemas TBI (at: autotecnico-online.com ).

Can a bad fuel pump start a GM Spider?

If you need to test the ‘spider’ equipped GM pickups or SUVs, the following tutorial will help: 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:

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.

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.

How big is a Silverado Z-71 fuel pump?

2000 Silverado Z-71. Engine size = 5.3 Repair done prior = Tune up at 100K with new fuel pump/sending unit. Work done to repair this problem = New fuel filter. New fuel pressure regulator. Throttle body cleaning. Air filter (K&N) cleaned and re-oiled. Fuel injector cleaner additive.

Can a fuel pump overload cause a problem?

If not, check the other loads on the fuel pump circuit as those other loads could be causing the problem (the overload). To check that refer to wiring diagram in Factory Service Manual.

What causes the fuel pump to keep burning out?

To get… Typically when you smell electrical smoke, that’s a pretty good indication that a wire, relay or electrically powered system has been damaged. Looking at your symptoms, it’s likely that a relay is damaged or the source of your issues.

What happens if your Chevy Express fuel pump goes bad?

One of the worst problems that can happen to a vehicle is abad fuel pump. If your Chevy Express’s fuel pump goes bad, no fuel (or not enough fuel depending on whether or not it’s out all the way) can enter the engine. Without gas your Express will not run at all.

Also, the symptoms are almost exactly the same as bad/clogged fuel filter. Here are the most common symptoms of a bad fuel pump in your Chevy Express: 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.

What’s the life of a Chevy fuel pump?

It’s happened to me more then once and I’ve read about it on auto repair forums. The original Chevy pump motor has a life expectancy of about 15-20 years. Running the vehicle out of fuel, which will actually run the pump in a dry state can shorten the expected life span.

Can a defective fuel pump cause a car to stall?

More details about this are below, but you might want to download your Chevy manual to help. The defective Chevy fuel pumps can cause a stalling condition or a no start situation that can leave you stranded.

What are the symptoms of a bad fuel pump in a Chevy Equinox?

Here are the most common symptoms of a bad fuel pump in your Chevy Equinox: 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.

Why is gasoline bad for the fuel pump?

Gasoline is a petroleum product and lubricates the inside of the fuel pump, impeller and other moving parts. In addition, debris and sediment collects in the bottom of the tank and that stuff can damage the delicate internal workings as well.

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.

What causes a fuel pump to leak at the bottom?

Fuel System Leaks Most mechanical fuel pumps have a weep hole on the bottom of the unit. When the internal diaphragm leaks, fuel escapes through the weep hole to notify the vehicle owner of a malfunction. This is one of the more common fuel pump problems found in classic cars that are between 30 and 60 years old.

How to check fuel pump signal in gmflash?

1. CONNECT PIN1 (BLACK GROUND) TO PIN16 (PINK GROUND) 2. CONNECT PIN32 (RD/WH BATT + ) TO PIN47 (GY FUEL PUMP 12+) THIS WILL POWER THE PUMP TO RUN AND CHECK FOR A FAULTY FUEL PUMP. 3. NEXT, CHECK FOR FUEL PUMP SIGNAL AT THE FUEL SYSTEM CONTROL MODULE. 4. FIND THE DARK GREEN/WHITE WIRE IN PIN13.

Where is the fuel pump control module located?

It is often found in the fuse box located in the engine bay and functions as the primary electronic switch that controls power to the fuel pump. The fuel pump relay is usually controlled by the ignition or Powertrain Control Module, and when switched on, will provide current to the fuel pump so that it may function.

Why does my fuel pump not prime when I turn it on?

Pulled fuel pump relay and put in a jumper wire to run the fuel pump and it started. Put the fuel pump relay back in and it starts and drives, but the fuel pump still doesn’t prime when turning the key on. I’m afraid that after sitting overnight, it will once again refuse to start.

What happens if my Chevy Suburban fuel pump goes bad?

If your Chevy Suburban’s fuel pump goes bad, no fuel (or not enough fuel depending on whether or not it’s out all the way) can enter the engine. Without gas your Suburban 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.

Where is the fuel pump on a 1993 Chevy pickup?

The 1993 Chevy pickup utilizes a fuel pump and fuel level sending unit combination located within the fuel tank. It is not encapsulated in a module–it is an open unit that affords the ability to replace either unit independently. It uses a fuel strainer (filter) on the inlet side of the fuel pump.

How to check for a faulty fuel pump?

THIS WILL POWER THE PUMP TO RUN AND CHECK FOR A FAULTY FUEL PUMP. 3. NEXT, CHECK FOR FUEL PUMP SIGNAL AT THE FUEL SYSTEM CONTROL MODULE. 4. FIND THE DARK GREEN/WHITE WIRE IN PIN13. WITH A TEST LIGHT CONNECTED TO THAT WIRE, TURN THE KEY TO THE RUN POSITION.

How to check no fuel condition on GM 4.3L?

I’ve also included how to check a no fuel condition with starting fluid (although this is not the most effective way to test the fuel pump). It’s been my experience that misdiagnosing a bad fuel pump is a common occurrence on the 4.3L, 5.0L, 5.7L GM vehicles with the ‘Spider’ fuel injector assembly.

What kind of fuel pump does Chevy 3500HD have?

THe rear tank has only a two conductor wire connector going to it which is prob the sensor circuit only, and that rear tank does seem to feed thru a remote frame rail rmounted pump to supply the fwd tank. That fwd tank has a 4 wire connector I assume to power both the in tank fuel pump/sending unit combo.

Can a Chevy 3500HD run with a full tank?

Both tanks fulled, go down the road for 150 or so miles. get two notches on fuel gage below a half tank marking, and the engine shuts down with a full tank in the rear and nothing in the front. Rear tank doesn’t supply the front as it’s always full.

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 is my Chevy fuel pump not working?

The thick black wire is the ground. If the fuel pump has been replaced before, It could have had the connector replaced with the new style ( old style is square and the new style is more rectangle/flat) and where they splice the new connector in could have gone bad.

Do you need to replace fuel filter when replacing fuel pump?

The fuel level sensor is a separate component attached to the fuel pump. This part does not always come with the fuel pump and sometimes is not interchangeable with aftermarket fuel pumps. Chevrolets have a common issue with fuel filters getting clogged. You always want to replace the fuel filter when replacing the fuel pump.

Where does the fuel pump go in a truck?

Searched forever for an answer. It turns out that in order to remove the bed of the truck, you must disconnect the ground for the fuel pump, which attaches in the rear on the drivers side. IIRC it ran either in or alongside the harness for the tail light wiring. Once I hooked that back up, my truck started right up.

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.

Why is my fuel pump relay not working?

1997 Chevy Express 2500 Van 155,000miles, Engine died in parking lot, we installed a new fuel pump, but noticed no power to Grey wire going to pump. Check the relay and it bench tests fine, however, no power is sensed at the proper terminal to turn on the relay.

Is there no power to the fuel pump?

No power to the fuel pump and the fuel relay is not getti… Q: No power to the fuel pump and the fuel relay is not getting power. My car has 190000 miles.

Why is the fuel pump and relay not working?

The ignition circuit, which includes the ignition switch, controls power to many components, including the fuel pump and relay. If there is an issue with the switch or the circuit, perhaps a wiring problem, then power to the fuel system may be cut off.

What’s the fuel pressure on a 1996 Chevy k1500?

Alright guys im relying on someone to help me out here with the actual PER GM specs for the Vortec Fuel pressure. I have done alot of searching and know that anything over 55 etc is good however my buddys truck (1996 Chevy K1500 5.7L 4L60E) has a P0300 code and after alot of digging i checked the fuel pressure.

What happens if you have a bad fuel pump?

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 test the fuel pump on a Chevy Silverado?

All of the following fuel pressure test gauge kits will help test the fuel pump on your Chevrolet Silverado (Suburban, Tahoe) and GMC Sierra (Yukon, Yukon XL): As I mentioned at the beginning, testing the fuel pump simply involves connecting the fuel pressure test gauge to the fuel system.

Why did my 2000 Chevy Silverado stop running?

My 2000 Chevy Silverado Pickup stopped running. It will start My 2000 Chevy Silverado Pickup stopped running. It will start and run for a few seconds, but then stalls. I’ve changed the fuel filter, rotor and rotor cap with no success.

Why does my GMC Sierra suddenly stop running?

Truck suddenly stops running, acting like it’s out of fuel. There is fuel in the gas tank and, I can hear the fuel pump when I turn the ignition on. Is there a fuse, or relay that is maybe causing this to happen?

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 Suburban start with a bad fuel filter?

At the most basic of levels your Chevy Suburban 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. If there’s been zero warning that the fuel filter could be going bad (hesitation, difficulty starting, etc) than a clogged fuel filter might not be the place to start.

How can I tell if my Suburban fuel pump is bad?

Testing your Suburban’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.

What causes a Chevy Suburban engine to stall?

Stumbling and poor idle can be caused by air or fuel starvation so make sure that those filters are OK. I think that my own problem is caused by dirt in the fuel tank plugging up the fuel intake screen. I think the dirt falls off when the engine is shut off.

What should I do if my Chevy Suburban dies while driving?

’95 Sub (5.7L, 4wd) recently began dying while driving (low speeds, turns, upon parking, etc.). Fuel filter replaced this weekend – drove fine – for awhile. I found much debris in old filter – could new filter already be plugged-up? Should fuel pump be checked/cleaned/replaced? Electical seems okay (wires, battery, etc.)

What happens if the fuel pump goes bad on a CTS?

If your Cadillac CTS’s fuel pump goes bad, no fuel (or not enough fuel depending on whether or not it’s out all the way) can enter the engine. Without gas your CTS 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.

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.

Is it easy to replace a fuel pump?

Replacement of the fuel pump is not a quick or easy job. This is because the pump is tank mounted and the fuel pump is replaced as a unit. The less gas in the tank the easier it is to deal with. The replacement parts for the job are also not inexpensive.

What kind of fuel pump do I need for MY Suburban 1500?

Big SUVs like your Chevy Suburban 1500 call for big engines, and big engines need a lot of fuel. At AutoZone, we specialize in Chevy Suburban 1500 fuel pumps that are manufactured to handle your heavy-duty engine.

When was the last time my Chevy fuel pump failed?

The technical service bulletin that explains the cause of the repeat failure of the Chevy fuel pump replacement unit covers all years from 1996 to 2003 and includes all of the pickup trucks. Also included is the Tahoe and suburban and their GMC counterparts such as the Sierra and Envoy. Oh and don’t forget the Cadillac Escalade is also included.

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.

What are the symptoms of a fuel pump relay problem?

1. Engine stalls One of the first symptoms of an issue with the fuel pump relay is an engine that suddenly stalls. If the fuel pump relay has an issue while the vehicle is operating it will cut off power to the fuel pump, which will cause the engine to stall.

Why is my Cavalier running out of gas?

If you have a full tank of gasoline and your Cavalier just stops running, you could have an issue with the fuel system. Most of the fuel system problems come from the fuel pump located in the gas tank of the Cavalier, but it can be a fuel filter as well.

Where is the fuel pump located on a Cavalier?

Most of the fuel system problems come from the fuel pump located in the gas tank of the Cavalier, but it can be a fuel filter as well. You can troubleshoot the fuel system on the Cavalier with a few tools right at home and save yourself the cost of taking it in to the auto shop.

What to do if your fuel tank does not flow?

If no fuel flows out, then you have an issue with the fuel pump or the fuel filter. Remove the other side of the filter clip and remove the filter completely. Have your friend turn the key on and off again. If fuel still does not flow, then you will need to replace the fuel pump unit in the fuel tank.

How much does a fuel pump cost for a Chevy Blazer?

The best part is, our Chevrolet Blazer Fuel Pump products start from as little as $19.99. When it comes to your Chevrolet Blazer, you want parts and products from only trusted brands. Here at Advance Auto Parts, we work with only top reliable Fuel Pump product and part brands so you can shop with complete confidence.

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.

How does the fuel system work on a Chevy Blazer?

Fuel system has a test port on the metal line that requires a special valve to connect and then ckeck the pressure. 60psi min with key on engine off (start pressure) and 54psi running. If those check out then on to electrical/sensors/etc. Any SES light on and codes?

Why does my Chevy Blazer have no power?

No codes come up until after it happens then it comes up oxygen sensers port 1 and port 2. You can step on the gas and the engine just bogs it has absolutely no power . Put the car in neutral ( while still moving ) count to 3 and restart and have all the power you want. Tried Hi test gas , fuel additives, still happens!

What do I need to replace my fuel pump?

This factory replacement unit also includes the fuel level gauge sender, hanger assembly and tank filter sometimes called the sock. Some aftermarket replacement pumps just include the motor. This means you replace the motor and transfer the used fuel pump sock, fuel sending unit, and hanger assembly.

Where can I get a gas pump for my Chevy Suburban?

A flooded engine keeps your vehicle from starting up, and without adequate pressure, you’re in for a jolty ride. Upgrade your Chevy Suburban 1500 fuel pump by shopping the extensive selection at your local AutoZone, and benefit from free battery charging and engine diagnostic testing at the same time.

What should the PSI be on a fuel pump?

CASE 2: Fuel pressure test gauge registered between 53-59 PSI. This is the correct and expected test result and tells you that the fuel pump is OK. Is The Anti-Theft System Causing The No Start Condition?

How to test the fuel pump in a Chevy Malibu?

The fuel pressure test gauge kit that’ll connect to your Chevy Malibu’s Schrader valve and that I recommend for its low price and durability is the: Actron CP7838 Professional Fuel Pressure Tester. All of the following fuel pressure test gauge kits will help test your 2.2L Chevy Malibu’s fuel pump:

Why is my Chevy Cobalt fuel pump not working?

Defective fuel pumps usually cause one of two types of problems on your 2.2L Chevrolet Cobalt. For the most part, the fuel pump will simply stop working and the engine will not get any fuel which causes it not to start. In certain cases, the fuel pump will function enough to start the vehicle but the engine will not run optimally.

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 should the fuel pressure be when the engine is off?

Your fuel pressure gauge should register between 53-59 PSI (if the fuel pump is working correctly). NOTE: The fuel pressure specification of 53-59 PSI is with the key on but engine off (KOEO).

What is the GM diesel truck fuel pump defect?

Consumers who own vehicles installed with a Bosch CP4 fuel injection pump may be affected by a GM diesel truck fuel pump defect. What is the GM Diesel Truck Fuel Pump Defect?

When is a Duramax CP4 fuel pump failure?

If the body casing of the pump is cracked, as in the picture, or you find metallic debris on the fuel pressure regulator screen (pictured right) this is indicative of a pump failure. GM Mandates that the below steps be performed:

What are the symptoms of a bad fuel pump relay?

One of the first symptoms of an issue with the fuel pump relay is an engine that suddenly stalls. If the fuel pump relay has an issue while the vehicle is operating it will cut off power to the fuel pump, which will cause the engine to stall.

How do you check mechanical fuel pump?

Checking Mechanical Fuel Pumps Remove the air cleaner. Visually inspect the pump. Another way to check the pump is disconnect the fuel line at the carburetor and place it in a container. You should also check fuel pump pressure.

Do I have a fuel pump problem?

If you press the accelerator and feel that your car has hiccups, you may have problems with the fuel pump. The fuel pump may be choking due to inferior fuel, or the fuel pump may not be generating enough pressure to push the fuel forward into the system.

Where is the fuel pump located on a Chevy 1500?

Answer: The fuel pump on a Chevrolet Silverado 1500 is located under the driver’s side, attached to the frame rail. It is just easy to locate this component in most cars, and this usually requires tracing the fuel lines.

Where is the fuel pump on a Chevy?

Part of the engine harness tail and stop lamps harness, in the left rear side of the engine compartment, under the brake master cylinder. It is #7and #5 in the picture. Terminal B in the picture.

How can I tell if my fuel pump has no power?

There should be 3 power terminals. The relay only runs for 2 seconds after you turn the key on. So you have just a little time to test it. That will tell if you have power going from the relay and then the issue is down stream from the relay. You can also check it at that connector. Was this answer helpful?

How to replace a fuel pump on a 1994 GMC Truck?

Replacing a fuel pump on a 1994 GMC truck requires you to drop the fuel tank or lift the truck box. Both are awkward if you don’t have the right lifting tools or maybe if your fuel tank is right full. So I cut a hole in the box and removed the pump from on top. This will make it easier if I ever have to pull the pump again. Loading…

How much psi does a fuel pump need to start?

The fuel pump produces much more than just 50 PSI of course.. but the bare minimum the engine needs to start is 50 PSI… so anything less and it will crank for ever before it starts or not start at all.

What happens when a fuel pump relay goes bad?

If the fuel pump relay has an issue while the vehicle is operating it will cut off power to the fuel pump, which will cause the engine to stall. A faulty relay may allow the vehicle to be restarted a short while later, while a completely failed relay will not.

Do you need a new fuel pump for a Chevy Malibu?

Your Chevy Malibu is known for ease of handling and steady performance you can count on, which is why you notice if its performance changes, especially during acceleration. If your vehicle is jolting on acceleration or suddenly using a lot more fuel, then you might need a new Chevrolet Malibu fuel pump replacement from AutoZone.

The engine may still crank when the key is turned, however it will not be able to start due to lack of fuel. This symptom can also be caused by a wide variety of other issues, so having the vehicle properly diagnosed is highly recommended. 3. No noise from the fuel pump

What kind of fuel pump does a Chevy Silverado have?

2000 chevy silverado starts then dies repeatedly has a new… 2000 chevy silverado starts then… 2000 chevy silverado starts then dies repeatedly has a new fuel pump fuel pressure regulater and mass air senser Show More Show Less Ask Your Own Chevy Question Share this conversation Answered in 5 minutes by: .

What should I do if my fuel pressure is too high?

The pressure isn’t gone yet… now you have to pull the fuel pump relay out engine compartments fuse box. And then start the vehicle until it dies. If it doesn’t quit, you pulled the wrong relay, consult the manual. If you do not do this step, gasoline under 40+ lbs of pressure will spray in your face and on the engine. 4.

Why does my 2000 Chevy Silverado not start?

Question: My 2000 Chevy Silverado that will not start unless i pour gas in the throttle body. It has been sitting for about 8 months and prior to that there was no problems at all. I have good fuel pressure with no bleed down. Answer: Does it start after pouring gas in throttle and keep running fine? What is the fuel pressure?

Why does my GMC Sierra have a bad fuel pump?

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 Sierra is difficult to start. This because there’s not enough fuel pressure to properly atomize the fuel as it enters the combustion chamber.

Also, the symptoms are almost exactly the same as bad/clogged fuel filter. Here are the most common symptoms of a bad fuel pump in your GMC Sierra: 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.

How to install a mechanical fuel pump on Chevy?

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Why is my fuel pump not working when I replace it?

The concern with the fuel gauge is a common issue when replacing the fuel pump. The fuel level sensor is a separate component attached to the fuel pump. This part does not always come with the fuel pump and sometimes is not interchangeable with aftermarket fuel pumps. Chevrolets have a common issue with fuel filters getting clogged.

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.

How to install new GM wire harness on fuel pump module?

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Why is my fuel pump not turning on?

Thanx. Try swapping the fuel pump relay with another one, that will truly rule out it being the relay. fuel pump gets ignition, nothing to do with ecm as far as power is considered, sounds like a fault contact on the relay, possibly fuse box, check grounds aand for corrosion

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.

Is there any power to the fuel pump?

I have no power to the fuel pump on a 2002 silverado 1500 5.3. Check the grey wire with the key getting switched on. Still no power. , GM MASTER/WORLD CLASS.

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.

Where is the fuse for the fuel pump?

ASE MASTER replied 9 years ago 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.

How does the suction in a fuel pump work?

The other end of the lever, which is linked loosely to a rubber diaphragm forming the floor of a chamber in the pump, goes down and pulls the diaphragm with it. When the lever pulls the diaphragm down, it creates suction that draws fuel along the fuel pipe into the pump through a one-way valve .

Where does the fuel pump go in a car?

A fuel pump draws petrol out of the tank through a pipe to the carburettor . The pump may be mechanical worked by the engine – or it may be electric, in which case it is usually next to or even inside the fuel tank . For safety, the petrol tank is placed at the opposite end of the car from the engine.

Can a worn out fuel pump help a corvette?

However, a worn-out fuel pump makes it hard for your vehicle to sustain the speed and performance it needs. Order a new Chevrolet Corvette fuel pump from AutoZone to improve your vehicle’s fuel consumption, power and performance.

What happens when you hit the gas on a corvette?

You’ll notice that every time you hit the accelerator, your ‘Vette responds by jerking or jolting before getting up to speed. This is happening because your engine isn’t able to get the full amount of fuel it needs in the right manner, and it’s in the process of being flooded with too much gasoline.

What to do if your fuel pump is not working?

Check out your vehicle’s service manual to find out where to check and the proper procedure for checking it. Test for source voltage, to determine whether or not the good charge that’s leaving the fuse is getting to the pump. If no power is making it to the fuel pump, then check the fuel pump relay circuit.

How can I check the voltage of my fuel pump?

Check the voltage at the pump itself. Just because you’re getting juice from the circuit doesn’t mean that it’s getting to the pump itself, which makes it important to check the voltage there as well. Check out your vehicle’s service manual to find out where to check and the proper procedure for checking it.

What causes a fuel pump connector to go bad?

One of the most common reasons for a connector to go bad is the retention clips. If a connector does not have good retention and a tight connection, it can lead to heat problems. Corrosion on terminals has been an issue recently due to the location of the connector on the tank.

Why does my car have no fuel pressure?

Many people recognize this sound every time they start the car but don’t realize it is the fuel pump running. If you “DO NOT” hear the buzz of the fuel pump; then your engine has no fuel pressure, and we need to see why. The first thing you want to do is check the fuse panel to see if the fuse is blown.

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.

When did I change the fuel pump on my GMC Sierra?

I changed the fuel pump on my 1996 GMC Sierra earlier in the year. I cut through my truck bed right above the fuel pump so I would have easier access to it. For the most part my truck has been fine but I have had problems with the ground wire coming from the fuel pump. At first I thought it was just the old rusty bolt that grounds the fuel pump

How to fix ground wire from fuel pump connection?

Same with the power wire from the relay to the fuel pump connector.You can also try sliding the wire between two fingers while slightly bending the wire to feel for a soft spot but this may not work due to the fact that it works sometimes so the bad spot isn’t real big yet. 5 people found this helpful.

What to do if your Chevy fuel pump fails?