Question about 2003 Pontiac Grand Prix

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What is fuel pressure supposed to be for a 03 grand prix with 3.1 engine

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  • Pontiac Master
  • 991 Answers

35psi.

Posted on Apr 04, 2015

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6ya6ya
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Posted on Jan 02, 2017

ewashmidas
  • 362 Answers

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

honeymokey
  • 3113 Answers

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

next to oil filter

Posted on Aug 12, 2009

KCGTODAD
  • 169 Answers

SOURCE: 1997 grand prix gtp. Tire pressure/abs light

Hello! This indicates a fault with the wheel speed sensor/ABS sensor. Any major auto parts retailer can pull the details of this code (which sensor) for free, which will help you identify if the wiring is loose or damaged or if the sensor will need to be replaced. If you need to replace the sensor - you will need to replace the entire wheel bearing assembly, as the sensor is internal.


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Posted on Nov 02, 2009

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

emissionwiz
  • 75822 Answers

SOURCE: 2000 grand prix gt 3.8 has a hard time starting

MOST LIKELY THE FUEL PUMP PRESSURE CHECK VALVE IS DEFECTIVE, THIS ALLOWS THE FUEL TO DRAIN OUT OF THE LINES AND FILTER AND CAUSES A LONG CRANK TIME/HARD START, THE CHECK VALVE IS PART OF THE FUEL PUMP AND THE FUEL PUMP IS LOCATED INSIDE THE FUEL TANK, THE TANK MUST BE DROPPED TO REPLACE THE PUMP.

Posted on Mar 16, 2010

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My 1990 pontiac grand prix is getting to much gas and its dyeing


It can be faulty fuel regulator or ECM not controlling fuel pump.The fuel pressure regulator and ecm needs to be inspected.For more details,go through the help links.Click the link below:----ECM misfueling Engine?
http://technoanswers.blogspot.in/2012/03/ecm-misfueling-engine.html

----------
How to relieve fuel pressure? http://technoanswers.blogspot.com/2012/01/how-to-relieve-fuel-pressure.html
---------- Refueling problem? http://repairhelpcenter.blogspot.com/2012/01/refueling-problem.html
---------- Vehicle consuming more fuel? http://repairhelpcenter.blogspot.com/2012/01/toyota-tercel-consuming-more-fuel.html
=-------------------- How to maximize fuel economy on your vehicle? http://schematicsdiagram.blogspot.com/2011/11/how-to-maximize-fuel-economy-on-your.html

----------
This will help.
Thanks.

Jun 05, 2012 | 1990 Pontiac Grand Prix

2 Answers

I have replaced the fuel pump on my 1994 pontiac grand prix with the 3.1 litre v6. But it does not seem to be sending the fuel to the motor? In the instructions it says something about the oil pressure...


Are you sure that the fuel pump is properly installed? Have you tested the fuel pump circuits to see if they are working properly? Did you also replace your fuel filter? (It could be totally clogged up) Have you checked to see if there is any fuel pressure at the fuel rail or are you just assuming that the pump is not delivering fuel to the injectors? Have you checked your fuel injector circuits for power and for injector pulse from the EngineControl Module? Have you scanned your Engine Control module to see if you possibly have a Crank Sensor or Cam Sensor problem?

The oil pressure switch only keeps the fuel pump running once the engine starts. The fuel pump should run for 2-3 seconds when you turn the ignition switch to the "Run" position to prime the injectors. The oil pressure switch is the problem only if the engine will not continue to run on its own after it starts up.

Jan 24, 2011 | 1994 Pontiac Grand Prix

1 Answer

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.

Mar 25, 2010 | 2004 Pontiac Grand Prix

1 Answer

03 pont. G. prix gt. when i pushed the gas pedal down the car does not accelerate the way it should . i recently replaced the fuel injector pressure reg.


could be your coil,or o2 sensor, catalytic convertor clogged with out code its really hard to tell these are just some suggestions

Feb 07, 2010 | 2003 Pontiac Grand Prix

1 Answer

03 grand prix mis fire codes


It may need a "CASE learn."

Dec 21, 2009 | 2003 Pontiac Grand Prix

1 Answer

Hard to start when cold once the engine is started it will start fine this only happens after it sits overnite


The most likely cause is the fuel pump unit. The fuel pmp has a check valve that is supposed to hold fuel pressure on the fuel rails after the engine is shut off. when this check valve leaks, it allows the fuel from the fuel tank to drain back into the tank. Then, when you go to start uour car, the fuel has to travel the full length of the car, and build up enough pressure to spray through the injectors before the engine will start.

The fuel pressure regulator can cause similar symptoms, but is not as likely to fail as the check valve in the fuel pump and will be much worse after a short hot-soak. (Shutting the engine off hot - for about 5 to15 minutes)

Oct 18, 2009 | 1997 Pontiac Grand Prix

1 Answer

Where is the fuel pump reset button on 1990 pontiac grand prix


GM cars don't use a fuel pump reset switch, they use an oil pressure fuel cut off sensor, same thing different way of doing the job, it the engine stops with the key in the on position or u loose oil pressure the fuel flow stops..

Jul 07, 2009 | 1990 Pontiac Grand Prix

1 Answer

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.

Jan 23, 2009 | 2001 Pontiac Grand Am SE

1 Answer

2001 Grand Prix cutting out


Sounds a lot like a fuel rail pressure issue. Re-check your work. Make sure your supply AND return fuel lines are not pinched or kinked.(that won't cost anything) Put a $15 NAPA Gold fuel filter on. At eight years you can't go wrong-it should need it anyway. Next step up in price is to have a mechanic attach a pressure gauge to the Schrader valve and monitor rail pressure as you drive and reproduce the stumbling. I'm betting your mixture is getting FUBARed causing your PCM (computer) to pull timing, that in combination with the low octane gas is causing your mixture to ignite so late it's still burning in your exhaust system. Retarded ignition timing will cause MASSIVE losses in power and dangerous under-hood temperatures. The reason I say dangerous is the GTP engine fire recall situation. http://www.gminsidenews.com/forums/f33/upcoming-recall-07035-97-03-gp-regal-3800-s-c-vin-1-a-61961/
If you’re throwing half burned gas down the manifolds and into the catalytic converter, it will overheat (and glow red or orange) and the internal lattice will melt and collapse (may have already happened) this will restrict the exhaust badly and cause a further reduction in power and more knock timing ******.
LMK what you find after the filter or fuel pressure test. That will tell you where to go from there.

Aug 06, 2008 | 2001 Pontiac Grand Prix

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