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Thread: '88 Subuurban 454

  1. #1
    Carb and Points!
    Join Date
    Jan 2013
    Age
    84
    Posts
    1

    '88 Subuurban 454

    I'm here trying to figure out what is wrong with my old truck. It bogs down when hot.

  2. #2
    RIP EagleMark's Avatar
    Join Date
    Feb 2011
    Location
    North Idaho
    Age
    63
    Posts
    10,477
    I think it's the age of the truck? I'm even older then the truck and it happens to me too... it's a bitch getting old...

    Back to serious, how hot? Any other symptoms? We are quite detailed around here with data loggers so we can see what is happening, hard to figure it out without seeing data.. Just some educated guess's, clogged CAT, bad fuel, clogged fuel filter, weak fuel pump.

    Here's a link on how to read codes from the ECM that would help you.
    http://www.gearhead-efi.com/Fuel-Inj...-CEL-SES-Light

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
    -= =-

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