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  1. #1

    Default 1990 burb, sputters off idle

    have a sputter/stumble off idle. I am guessing that it is something with the idle circuit(?). I don't know much about the TBI I have on this. It is a 1/2 ton 1500 with auto and 5.7. All stock.

    A mechanic suggested a couple of things, tho it's been a while since I talked with him over the phone.


  2. #2


    Bad gas if your running the cheap stuff stop now Bite the bullet and buy mid grade to the top dollar stuff 2 or three tanks should stop the problem if that doesn't help run injector/fuel system cleaner(with the better gas) through if your problem continues have the idle circuit looked at my truck did the same thing for a month befor i figured it out I was lucky it was cheap gas syndrome. It might be that simple hope this helps.
    Last edited by LiquidSacrifice; 10-06-2008 at 02:19 AM.

    1993 Chevy Suburban C1500 4X2

    ~ Dixie Custom Conversion
    ~178K ~SBC 350 TBI
    ~Turbo 400 trans
    ~ Single Flowmaster
    Yim Me 24/7 @ air4800 ( screen name and site so i don't block ya)

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