Question about 1994 GMC Suburban
Posted by Anonymous on
a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
It's on your fuel injection rail BELOW the upper intake manifold. The upper intake manifold MUST come off first.
Posted on Aug 01, 2008
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
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
Posted on Mar 19, 2009
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!"
Tips for a great answer:
May 16, 2017 | Cars & Trucks
Mar 03, 2015 | GMC Cars & Trucks
Nov 29, 2012 | 1994 GMC Sierra
Nov 09, 2012 | Cars & Trucks
Jul 18, 2010 | 1994 GMC Suburban
Mar 27, 2010 | 1999 GMC Suburban
Mar 02, 2010 | 1999 GMC Suburban
Feb 13, 2010 | 1994 GMC Jimmy
Jul 19, 2008 | 1994 GMC Jimmy
52 people viewed this question
Usually answered in minutes!