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WHERE IS THE FUEL PRESSURE REGULATOR LOCATED ON A 1994 GRAND PRIX 3.4

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The fuel pressure regulator should be on the feul rail near the injecters.it should have a vacum line connected to it.

Posted on Apr 13, 2009

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Where is fuel pressure regulator located in 2002 pontiac grand prix GT with the larger 3.8 V6? Tips or tricks for removal or installation welcome!


i fyou look at the fuel rail (fuel pipes that connect all the fuel injectors) you will see a small round piece with a vaccuum hose attached, thats the fuel pressure regulator. once you find it, you will see how it comes off.

Sep 21, 2011 | 2002 Pontiac Grand Prix

1 Answer

Were is the fuel pressure regulator on my 2004 grand prix GTP


The regulator is located on the fuel rail, i think on this model it is on the right side toward the firewall.

Mar 02, 2011 | 2004 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 2004 pontiac grand prix will not start on the first or second try.


Would you describe it as it cranks over normally but takes longer to start than normal especially if the engine is hot and sits for about 15 to 20 minutes before trying to start?

The first thing I would check is the fuel pressure regulator. It will be located on the fuel rail on the drivers front of the engine. It will be a round looking part held into the rail with a snap ring. It will have a small vacuum hose attached to it. Remove the vacuum hose and see if gas comes out of the nipple. If it does than the regulator is bad and will need to be replaced.

Two things happen when the regulators leak like this. the first is that fuel pressure drops. Low fuel pressure makes the fuel easier to boil in a hot engine. Fuel injector need liquid fuel to work properly. the other is that unmetered fuel ends up in the intake essentially flooding the engine. In both cases the engine eill need to be cranked over long enough to clear the flooded condition and for the fuel pump to run long enough to push liquid fuel back into the fuuel rail and restore fuel pressure.

Here's a trick to try next time. Turn the key to the run position (do not turn it all the way to the crank position). Wait 5 seconds and turn the key off then imediately turn the key back to the run position and wait another 5 seconds. Repeat this 3 or 4 times then crank the engine over. If it starts right up every time than you definitely have an issue with fuel pressure bleeding off.

The most common cause is a leaking pressure regulator but it can also be the fuel pump.

Oct 12, 2010 | 2004 Pontiac Grand Prix

3 Answers

Where is the fuel pressure regulator located on 2.5l engine


FUEL PRESSURE REGULATOR IS ON FUEL RAIL WITH THE FUEL INJECTORS.THE FUEL PRESSURE REGULATOR ALSO HAS A VACUUM LINE GOING TO IT.THE FUEL INJECTORS AND FUEL PRESSURE REGULATOR IS UNDER THE INTAKE COVER.

May 21, 2010 | 1994 BMW 3 Series

1 Answer

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

Jan 19, 2010 | 1997 Pontiac Grand Prix

1 Answer

How do i put fuel pressure regulator in my 1994 BMW 325i


Fuel pressure regulator is located on the fuel rail. 1. Remove top engine covers and fuel rail mounting bolts. 2. Disconnect vacuum hose. 3. Remove regulator clamp, noting position of regulator. 4. Pull regulator out with shop towel (full of fuel) don't lose thrust washer behind. 5. Replace with new O-rings.

Jan 04, 2010 | 1994 BMW 3 Series

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