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anthony maxberry Posted on Dec 06, 2013
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What cause fuel sensor to go out

Car started then just died out...its a pontiac grand am 2004 gt I believe its the fuel pressure regulator sensor are they easy to change

1 Answer

navytroll

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  • Expert 90 Answers
  • Posted on Dec 06, 2013
navytroll
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GM vehicles used a vacuum sensor. If the hose that connects to it is cracked or off it will do this. Located on the intake manifold.

5 Related Answers

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pat murray

  • 293 Answers
  • Posted on Nov 02, 2008

SOURCE: how to replace a fuel pressure regulator

the fuel pressure regulator is on the end of the fuel rail it is held on by a torx screw relieve the fuel pressure using the schrader valve on the fuel rail remove regulator holding screw and replace new regulator be carful not to damage o-rings on new regulator

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Anonymous

  • 3 Answers
  • Posted on Jan 09, 2009

SOURCE: how to replace a fuel pressure regulator

Is it the 3400 v6 or the 2.2l four cylinder? If it the v6 then what you have to do is first know where it is. It located on the end of your fuel rail on the driver side of the car. There will be a plastic hose coming off the top of the regulator, unplug it. You then have to undo your fuel line that runs into the bottom of the regulator. You have to use a wrench to get it off, not sure what size it is. Once you undo the fuel line the next step is to unbolt it from the fuel rail. There will be two screws that run in the side of the fuel pressure regulator that are facing the driver side of the car and are threaded in towards the passenger side of the car, just undo those two screws and the regulator should come off. Just repeat the process backwards to put it back on.

Anonymous

  • 1 Answer
  • Posted on May 23, 2009

SOURCE: I have a 99 Grand Prix GT 3.8V6. For a month now

I have had similar problems with other model cars in the past. One time it was a knock sensor needing replacing. The other time was O2 sensor. Both gave similar symptoms as you stated, especially when it was the O2 sensor.

Good luck.

c17hydro

Greg Bernett

  • 2993 Answers
  • Posted on Dec 01, 2009

SOURCE: where is the coolant sensor located for a pontiac grand am gt

It looks like this with a connector to it and is on the side of the engine block:

e924fb5.jpg
Look right under the radiator hose.

ZJLimited

ZJ Limited

  • 17989 Answers
  • Posted on Feb 08, 2010

SOURCE: how to change a fuel pressure regulator in a 1997

GM Century/Lumina/Grand Prix/Intrigue 1997-2000
Fuel Pressure Regulator - Removal & Installing

The fuel pressure regulator is a diaphragm-operated relief valve with fuel pump pressure on one side and regulator spring pressure and intake manifold vacuum on the other side. The regulator's function is to maintain a constant fuel pressure across the injectors at all times. The pressure regulator compensates for engine load by increasing fuel pressure as engine vacuum drops.

The fuel pressure regulator is serviced as a separate component. When servicing the pressure regulator, make sure that the O-ring back-up, large O-ring, filter screen and small O-ring are properly positioned on the pressure regulator.


44dcbf8.jpg Fig. Cutaway view of a typical fuel pressure regulator


REMOVAL & INSTALLATION
The need to work as cleanly as possible cannot be over-emphasized. Even the smallest amount of dirt, if allowed into the fuel pressure regulator and/or the fuel rail, will find its way to the fuel injectors. The nozzle openings of the injectors are very small. Keep hands and tools clean. Clean the areas to be disconnected with a suitable solvent. Carefully cover open fittings and connections to keep out foreign material. Dirt in the injectors almost guarantees a clogged fuel injector and engine performance problems.
3.1L and 3.4L (VIN E) Engines

  1. Disconnect the negative battery cable.
  2. Relieve the fuel system pressure using the procedures found in this section.
  3. Remove the upper intake manifold assembly. Please see .
  4. Disconnect the vacuum line from the pressure regulator.
  5. Remove the regulator retaining screw and remove the retainer bracket. Using a clean shop cloth to catch fuel spillage, carefully pull the regulator from the fuel rail. Twist the regulator slightly while removing to ease removal. Discard the O-ring.

4ecb713.jpg

Fig. Exploded view of the fuel pressure regulator mounting-3.1L and 3.4L (VIN E) engines
To install:
  1. Clean all parts well. DO NOT use shop compressed air to test or clean a fuel pressure regulator. Clean the fuel pressure regulator screen, if necessary. DO NOT immerse the fuel pressure regulator in a solvent bath or it will be damaged.
  2. If the filter screen has been contaminated, it should be removed and the pressure regulator replaced.
  3. Lubricate a new pressure regulator O-ring with clean engine oil and install on the regulator inlet.
  4. Install the fuel return pipe to the regulator.
  5. Install a new retainer and spacer bracket into the slot on the fuel rail and install the pressure regulator to the fuel rail. Tighten the fuel return line nut to 13 ft. lbs. (17 Nm).
  6. Connect the vacuum line to the pressure regulator and install the retainer screw. Tighten to 76 inch lbs. (8.5 Nm).
  7. Inspect and verify that the retainer and spacer bracket is engaged in the slots in the fuel rail. Grasp and pull on the regulator to ensure that it is properly seated.
  8. Install the upper intake manifold. Please see .
  9. Connect the negative battery cable.
  10. Inspect for leaks using the following procedure:
    • Turn the ignition switch to the ON position for 2 seconds.
    • Turn the ignition switch to the OFF position for 10 seconds.
    • Turn the ignition switch to the ON position again.
    • Inspect all areas for fuel leaks.

Other size engine can find in autozone.com (free register).

Hope this help (remember rated this).

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1answer

I have 2004 Pontiac Grand Am. I changed fuel pump injector pressure sensor and fuel filter. The car won't start after been sitting for 4 or more hours.

Question edited for clarity.
Question moved to model category.

Jeff, our Pro Auto Tech and Electronics Wizard gives the best answer.

Jeff Armer Nov 27, 2022

injector pressure sensor ???? It doesn't have anything like that, it has a fuel pressure regulator - vacuum operated . Hook up a scan tool and check for codes or take it to a qualified repair shop. Quit trying to play auto mechanic.
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My 1999 grand am gt keeps dieing after battery and altenator and starter hasbeen replaced hat would

-I don't think these components cause that.
What I see base on your information:
1. Fuel . (Including Pump, pressure regulator or may be bad
fuel pump relay too)

Good Luck

Mai
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How to check diaphram on a 2004 grand am gt fuel rail

If your referring to the fuel pressure regulator than pull off the vacuum hose that is attached to it. Start the engine. If gas comes out replace it. If no gas comes out its probably fine.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

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Replacing O2 sensor on 2004 Pontiac Grand Am

Testing fuel pressure with the proper testing equipment would be the best way , not by dribbles out of the fuel system test port . Fuel pressure gauge can be bought for $ 25.00 buck's ! What engine does it have 2.2 -4cylinder or 3.4 l V-6 ? Pull the plug wires from the same coil pack , crank the engine , is there spark ? Fuel pressure should be 52-59 psi) . I can't see that replacing the O2 sensor would cause a no start problem , unless you unhooked something your unaware of . Find out what the fuel pressure is and if it has spark an go from there .
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My 04 Grand prix gt will start then after sitting a while will not start i have to push the gas for it to stay started i just got this car and it only has 56k miles on it.

A fuel pressure test should be performed as I suspect the fuel pressure regulator is leaking fuel into the vacuum line causing the engine to flood on restart.
A drop in fuel pressure would confirm this.
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What makes a car stop while driving but starts

Fuel pressure loss is the usual cause. Check your fuel pressure. This can be caused by a plugged fuel filter or a faulty fuel pump. The next thing to check is your fuel pressure regulator
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Son's 99 Grand Am Gt has been giving starting problems.  Starts, then dies.  May or may not start again.  Tune up earlier this summer, plugs wires, etc.  Changed fuel filter. could it be the fuel...

HEY!! I had same problem and i didnt know i solved it til i put in a brand new battery! I think the battery was getting old, and the extra amps told the 'computer' that the car wasnt running and it just died at start up sometimes. the new battery must have kept the computer from 'glitching off' when we started it. and all is great now!
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How to replace a fuel pressure regulator

the fuel pressure regulator is on the end of the fuel rail it is held on by a torx screw relieve the fuel pressure using the schrader valve on the fuel rail remove regulator holding screw and replace new regulator be carful not to damage o-rings on new regulator
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