Question about 1994 GMC Suburban

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Where is the fuel pressure regulator located on my 1994 GMC suburban

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  • GMC Master
  • 5,408 Answers

Usually on one end of the fuel rail.

Posted on May 24, 2015

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Posted on Jan 02, 2017

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SOURCE: where is the fuel pressure regulator located on a 1999 gmc jimmy

It's on your fuel injection rail BELOW the upper intake manifold. The upper intake manifold MUST come off first.

Chris

Posted on Aug 01, 2008

hasbensystem
  • 63 Answers

SOURCE: fuel pressure regulator

How do you know that it is the regulator?
these 4.3 motors had a lot of trouble from 93 to 98, I know I had 2 of them.
What happened to mine was that the intake kept getting very carboned up. After I would clean it, the truck would run fine for about 5 or 6 months, then same thing.
Theres actually a class action lawsuit about this that I believe has been settled, you may have recourse if you bought it through a dealer. Good luck.You'll need it.

Posted on Dec 23, 2008

  • 1 Answer

SOURCE: where is the fuel pressure

where is the fuel pressure re

gulator located for the 1994 GMC Jimmy

Posted on Dec 30, 2008

daves944
  • 1050 Answers

SOURCE: rough idle,runs fine on highway

It is possible that the regulator is leaking into the intake plenum, or one of the injector lines has a bad O-ring and is doing the same thing. This was actually a big problem with this system on the 4.3L engines, but it is a little different on the 5.7. Before tearing into this this though, I think it would be a good idea to get a professional diagnosis. I would start with a compression test. The miss could be caused by low compression in one or more cylinders. The injector assembly has the regulator mounted right on the side of it and the whole assembly resides inside the intake plenum. It is not that difficult a job, requires some patience and skill, the worst part is the cost of the parts.
I've attached a picture of the injector assembly with the reg attached and highlighted

9533d3a.jpg

Posted on Mar 19, 2009

  • 645 Answers

SOURCE: Were is the fuel pressure

the fuel pressure regulator is located inside the intake. you have to remove the upper intake to access the regulator. the black plastic intake is what you need to remove.

Posted on Feb 13, 2010

Testimonial: "Thanks. I went straight to it. The diagram from autozone was standard and not what I was looking for. Thanks again!"

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Where is the fuel pressure regulator on a 99 gmc suburban 2500 7.4l v8


5.7L And 7.4L Engines
  1. Disconnect the negative battery cable.
  2. Relieve the fuel system pressure.
  3. Remove the upper manifold assembly.
    NOTE If the fuel pressure regulator is to be reinstalled, inspect the filter screen (if equipped) for contamination. If the filter screen is contaminated, replace the regulator.
  4. Disassemble the fuel pressure regulator snap ring retainer.
  5. Disassemble the regulator assembly and the O-rings.
  6. Discard the O-rings.

    0996b43f80205553.jpg Fig. Fuel pressure regulator
To install:
  1. Lubricate the new O-rings with clean engine oil.
  2. Install the backup O-ring, the large O-ring, the filter and the small O-ring.
  3. Assemble the regulator with the vacuum tube pointing down into the snap ring retainer.
  4. Install the upper manifold assembly.
  5. Connect the negative battery cable.
Good luck

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1 Answer

Were is the fuel pressure regulator located on my vehicle? Is there a picture or a diagram? 1994 GMC Jimmy 4.3 Vortec


the fuel pressure regulator is located inside the intake. you have to remove the upper intake to access the regulator. the black plastic intake is what you need to remove.

Feb 13, 2010 | 1994 GMC Jimmy

1 Answer

Fuel delivery


yes i had the same problem like too never found it but it was the fuel pressure regulator
and on that engine its located below the upper intake you have too pull it off too get too it!!!
it takes about two hours too do the job!!!

Apr 22, 2009 | GMC Suburban Cars & Trucks

1 Answer

Where is the fuel pressure regulator for 1994 gmc jimmy located


where is the fuel pressure re

gulator located for the 1994 GMC Jimmy

Jul 19, 2008 | 1994 GMC Jimmy

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