Question about 2004 Pontiac Grand Prix
I have checked all fuses, replaced fuel pump, checked ignition and the motor turns over but wont start. I started it with starting fluid, but when it was gone car stopped running.
I think I can help but I will need to know what engine you have?
Posted on May 09, 2014
First check the fuel filter. check before and after the filter if you get fuel before it then check after it, no fuel before go back to the pump. if you get fuel after then go to the fuel rail on the motor. open the line before the pressure regulator, if you get fuel then check after the regulator, if none after then the regulator is bad, if the regulator is vacuum assisted check your vacuum.
Posted on May 08, 2014
Check battery and connection,fuel filter,tune up,coils,wires,module.Scan for any codes first.
Posted on May 10, 2014
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Posted on Jan 02, 2017
The easiest way to check if the fuel pump is working is to listen for a whirring noise when you turn on the ignition switch. No noise means it is not working.Check the relay a suggested.If you do hear a whirrring noise check the fuel filter. It is located under the car at the end of the tank.
Posted on Nov 09, 2008
The fuel pump is in the fuel tank.Sit in the car.....turn on the ignition switch to run.....listen very closely to the rear of the car...or have someone kneel down by the back wheel.....you should hear a "prime cycle"......the pump running for 2 or 3 seconds if the key was off for 15 seconds before trying this.If you hear silence you most likely need a fuel pump.Before pulling the tank down....check for power on the gray wire at the fuel tank connector just ahead of the rear axle under the car.Check for power with a test light that will last for 2 to 3 seconds as you turn on the key to run.Power means you really most likely need a pump.No power means you may need a fuse or a fuel pump relay.
Posted on Aug 11, 2009
Well i would change the fuel filter first. Then if that doesn't fix it there might be a reset button on the inside of the trunk for the fuel pump actually look for the reset button first. If you don't have one there is a relay switch under the hood sometimes they fail. You have three Ac,Fuel pump, door locks. The way i do it is turn the key on have some one put there hands and feel for the switch to work when you engage the power locks mark it with white tire crayon and feel for the ac when you turn it on it will still click even with the engine not running. mark that one also, Now the last one has to be the fuel pump relay turn the key on and it should click. if no click is heard? You have a bad fuel relay switch. replace it. If you feel the click and hear it? That would mean the fuel pump is bad. And these are in the tank. But please go with the easy stuff first. it might seam a waste of time checking the relays and marking them but i always fo this and mark them. cause you never know when your gonna need to find the relay something.
Hope i helped.
Posted on Jan 13, 2011
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