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Fuel pressure test port 3800 grand prix - Grand Prix Pontiac Cars & Trucks

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6ya6ya
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Posted on Jan 02, 2017

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ewashmidas
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SOURCE: Fuel pressure

With the 3.1 engine: Ignition on 52-59 psi, at idle 42-56 psi. With the 3.8 engine: Ignition on 48-54, at idle 38-51. Let me know if your's is supercharged the specs maybe different.

Posted on Jan 24, 2009

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rockitman187
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SOURCE: 1997 Pontiac Grand Prix Evac Canister Pressure to low

Check hoses for cracks and holes at the pictured locations
84c815b.jpg 0387102.jpg d29077b.jpg 55c4546.jpg

Posted on May 26, 2009

honeymokey
  • 3113 Answers

SOURCE: Oil pressure switch on a 1997 Grand Prix Gt 3.8

next to oil filter

Posted on Aug 12, 2009

alicantecoli
  • 22219 Answers

SOURCE: location of the radiator drain plug for 2001 Pontiac grand prix

doesnt have one ,remove the bottom hose

Posted on Sep 05, 2009

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ZJLimited
  • 17970 Answers

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).

Posted on Feb 08, 2010

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02 Grand Prix GT 3800 starts and stalls immediately (especially when warm). Will start up again and run fine, though it may have to be cranked a bit to get started the second time. I cleaned the MAF sensor...


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