Question about 2004 Pontiac Grand Prix

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Fuel Pump If my fuel pump is going out does it make a humming or whistling sound?? My car also is starting to jerk like it wants to stop while im driving. Ive never had this noise nor the jerking before.

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  • Pontiac Master
  • 21,873 Answers

A humming noise in the gas tank is usually a failing fuel pump.
The pump uses liquid gasoline to keep it cool and lubricated.

Posted on May 02, 2013

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

emissionwiz
  • 75197 Answers

SOURCE: Fuel Pump Relay Switch

Underneath your hood, behind the passenger side headlight, behind the core support, is a bank of 2-8 relays. One of those relays is the relay needed for your fuel pump. There will also be a fuel pump relay fuse located there. The relay designation should be on the cover of the relay compartment.

Posted on Jan 03, 2009

  • 21 Answers

SOURCE: 1989 Pontiac 6000 LE

Check AutoZone.com as they have an area where they can tell you where the parts are located on your car.

Posted on Apr 07, 2009

tse22
  • 103 Answers

SOURCE: I have a 1991 Firebird V8 305 with TBI. Car was

Check your fuel pump relay

Posted on May 12, 2009

  • 18 Answers

SOURCE: car stalled on highway no hum of fuel pump engaging relay or pump???

I WOULD CHECK THE FUEL PUMP RELAY UNDER THE HOOD BEFORE THROWING A PUMP IN IT!

Posted on May 18, 2009

  • 163 Answers

SOURCE: 2002 pontiac grand am, new fuel pump and filter, wont start

Is the security light active? If yes it will have to get reprogrammed by the GM dealer as GM has this as a propriatory system... Meaning no one else can work on it.

Posted on Sep 14, 2009

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1 Answer

1998 yukon hard start/jerking at hyway speed why.


IT sounds to me like the two most likely possibilities are the electric fuel pump... or the fuel filter.. If changing the fuel filter doesn't help, you will probably have to go to a shop and have them check fuel pump pressures. To avoid a misdiagnosis, it might be better to just go to a shop where they can hook their computer up to your vehicle for an analysis... Though some shops might change the fuel pump for you simply at your request, changing the fuel pump is too big of a deal to just change to see if it helps... Good luck..

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1 Answer

Car makes loud humming/whistling noise from under the rear by fuel tank/pump then car kills.


You describe a failing fuel pump. The fact he had it changed 3 times tells me the quality of the pumps was not great, or there is a problem with venting or something else.
If he did not change the fuel filter the pump would fail quickly. Since you changed the filter the next pump may last a long time.
A quality brand makes a big difference in this component.

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2007 tundra has been running great, regular maint. no problems untill suddenly with no warning, get in turn the ignition on and it will start fine then just stops. Try again and it starts, sounds fine then...


hi sounds like your fuel pump is going out . i would also change the fuel filter . over time with different types of gas and also gas cleaners mess up the fuel pump or fuel filter . there a test you can do . remove the hose right before fuel filter , face away from the truck in to safe bucket or gas can. have some one turn key to on , not start. and see if there steady stream or is it barley coming out this would mean fuel pump is bad. hope this helps

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My car wont start. Im thinking its the fuel pump. When i accelerate my car, I dont hear the humming sound that comes on like its supposed to. Sometimes it comes on and sometimes it dont. When it does, my...


Best suggestion would be to put a fuel pressure gauge on and and see what the fuel pressure reads when cycling the key off and on pressure should be 37 to 43 any less then this suspect the fuel pump or an electrical connection to pump. When it acts up and you can not hear the pump running try tapping on the fuel tank.If vehicle starts after that suspect the fuel pump.

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Car will not start. Sounds like fuel is not


do you hear the fuel tank hum when you turn the key foward? if it does it is not the fuel tank, it could be your ignition module or coil pack/distrubuter or your ignition switch. for futher help please call 419 689 1114 my name is robert and i will be happy to assist you.

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I have a '96 cavalier that makes a humming noise in the gas tank within 5 seconds of starting. I have tried two fuel pumps but the noise is still there!!!


Your fuel pump is supposed to hum, when you turn the key it primes the system and it will hum. When the car is running the fuel pump is running and it will hum. If the noise is excessive then try a higher quality fuel pump, it may be less noisy. You will hear the fuel pump on a lot of vehicles tho when you are sitting at a stop light with your radio off and everything quiet in the car.

Apr 08, 2010 | 1996 Chevrolet Cavalier

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Can not get it to start have sprayed starter fluid and it will start up then stop running could it be the modular?


Sounds like a fuel pump problem. I'd check the fuse and relay for the pump, also check the fuel filter. Cycle the key and see if you can hear the pump come on.

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I have a 1994 Toyota Celica, lately when im in neutral the rpms begin to drop and when i give it gas the car stalls out or it stays under 2 rpms after second gear.


Look and listen for vacuum leak Free,Change air filter $15, change fuel filter$20, replace fuel pump$300.
S
With motor running and your head under hood listen for hissing sound. Then start replaceing filters first air filter , then fuel filter. Check fuel pump by listening for humming noise at gas cap when you first move key in ignition to on (when the red lights go on). Have someone listen for you at the gas cap.(NO hum need pump)

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1 Answer

Fuel system problems?! 97 Camry HELP!


some of that junk could be in the lines its hard to tell unless you have them blow the lines out.

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