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Thread: Truck runs like crap need help troubleshooting

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  1. #1
    Join Date
    Jun 2008
    Location
    SE Georgia
    Posts
    417
    The days of trouble shooting piece by piece are one huh?
    Tired ol' 5.7, 5.3 swap in progress
    Handle every stressful situation like a dog.
    If you can't eat it or hump it.
    Piss on it and walk away.

  2. #2
    Join Date
    May 2004
    Posts
    2,120
    No, it can be done but a scanner makes life easy!


    97 GMC, 2002 LS6.

    1991 GMC Syclone #1428

  3. #3
    Join Date
    Sep 2007
    Location
    Texas
    Posts
    5,301
    auto zone does free scanning, and there scanners tell you exactly what the codes are.

  4. #4
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    wow, you need a fuel pressure gauge, too, to diagnose/verify current conditions. Also, verify its not pushing fuel out the fuel pressure regulator hose. A bad FPR can do that, huh Ricky?
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  5. #5
    Join Date
    Apr 2008
    Location
    SOMO
    Posts
    108
    Did you swap intakes? I had an Issue like this on my camaro once after i had the intake off while doing a head and cam swap. Turned out that i pinched the wiring harness under the back of the intake and i was getting air sucked in at the back.

    One i fixed that it ran fine.

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