Results 1 to 2 of 2

Need Fuel Pressure specs for an '02 5.3 Flex Fuel

This is a discussion on Need Fuel Pressure specs for an '02 5.3 Flex Fuel within the GM Trucks forums, part of the Vehicle Specific category; Hi, my buddy's '02 Tahoe flex fuel 5.3 gave him problems this morning. He said he had to hold the ...

  1. #1
    Junior Member
    Join Date
    Oct 2005
    Location
    Midwest
    Posts
    1

    White
    1997 Grand Prix GTP Coupe

    Need Fuel Pressure specs for an '02 5.3 Flex Fuel

    Hi, my buddy's '02 Tahoe flex fuel 5.3 gave him problems this morning. He said he had to hold the gas pedal down some to keep it from dying at idle and at lower speeds. I did some checking over of it and it had no DTC's or other obvious problems. I did do a fuel pressure check and got 42 psi at idle, 52 psi with the vacuum line off the regulator. Engine off with the pump priming I got 52 psi then it drops down to 46 psi almost immediately after the pump stops priming, then it bleeds off another 10 psi in 10 minutes in pressure leaving the key ON & the engine OFF. It will eventually bleed all the way down to 0 psi. Pulled the vacuum line & saw no fuel come out of the fuel pressure regulator while the system was pressurized. So, is this ok? If not can you get me some specs for this truck's fuel system? TIA.

  2. #2
    old timer blue02Z's Avatar
    Join Date
    Sep 2005
    Location
    Texas
    Age
    31
    Posts
    3,805

    Navy Blue Metallic
    2002 Z28

    i think it is around 55-60 psi. change that fuel filter


LinkBacks (?)

  1. 03-05-2016, 12:21 PM
  2. 11-08-2015, 11:05 AM

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Question: 5.3 flex fuel mods
    By jimmyz454 in forum General Help
    Replies: 7
    Last Post: 05-27-2014, 03:20 PM
  2. Replies: 3
    Last Post: 10-02-2006, 07:23 PM
  3. GM Flex Fuel question
    By Nastyfoot in forum General Help
    Replies: 5
    Last Post: 08-18-2006, 05:31 AM
  4. E-85 flex fuel who using it????
    By stage274 in forum General Help
    Replies: 93
    Last Post: 05-30-2006, 03:26 AM
  5. Replies: 3
    Last Post: 04-01-2006, 04:59 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •