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  1. #1

    Default hesitation on acceleration

    i have a 99' Silverado ext. cab w a 4.8..

    it runs nice,
    except for the hesitation i have when i accelerate...
    i can have the gas pedal on the floor and the RPMs dont go up or anything.. then all of the sudden it will take off... somebody said something about spark plugs and new wires...

    i put in a new fuel pump about 4 months ago.. and replaced the fuel filter at the same time..

    so if you have anny suggestions please let me know.

    Thanks!

  2. #2

    Default

    Quote Originally Posted by 99 silverado driver View Post
    i have a 99' Silverado ext. cab w a 4.8..

    it runs nice,
    except for the hesitation i have when i accelerate...
    i can have the gas pedal on the floor and the RPMs dont go up or anything.. then all of the sudden it will take off... somebody said something about spark plugs and new wires...

    i put in a new fuel pump about 4 months ago.. and replaced the fuel filter at the same time..

    so if you have anny suggestions please let me know.

    Thanks!
    Try cleaning your fuel sysyem, throttle body etc.I had the same problem on a 94 z and I cleaned out the TB and the problem stopped. hope this helps

  3. #3
    Legend

    Join Date
    Feb 2008
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    Red Wing, Minnesota, United States
    Posts
    3,356

    Default

    I say ignition, wires, plugs, dist, coils.
    99 K1500 Suburban LT "THE BEAST"
    Hypertech III, K&N, true dual
    285/75/16
    ___________________________
    Jason

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