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  1. #1
    Jr. Apprentice weswins's Avatar
    Join Date
    Aug 2010
    Edmonton, AB Canada

    Default 1994 TBI fuel + idle issues

    I have a 1994 Silverado with a 350 and upon deceleration, the engine seems to choke and upon start up it stalls ONCE! Only ONCE. After you restart it, it runs fine but a little rich.

    How can I remedy these little bothers?

    I know there is a way to adjust my mixture with the OBD1 port but I cant find a reliable answer with google searches or manuals.
    Full throttle is never enough!
    1994 Silverado Z71 1500 (everything but leather)

  2. #2


    Have you tried removing the throttlebody and cleaning top and bottom with throttlebody cleaner? Also take the IAC out of the throttlebody and clean with the t/body cleaner. Spray inside the t/body where the IAC came out. The IAC gets carboned up and can't move in and out freely.

    2005 Chevy Silverado Z71 Crew Cab
    6" Skyjacker lift w/Edlebrock dual front remote resoviour shocks, single rear remote. Rancho skid-plate.
    17" x 9" M/T Classic Lock Wheels, 35" BFG A/T or M/T tires
    4.10 PercisionGears w/factory locker, T/A Performance rear-end cover
    Banks CAI intake, ported throttlebody, JBA coated headers, over-sized Magnaflow cats, Magnaflow cat back exhaust, Diablo tuned
    B&M aluminum deep transmission pan
    Warn brush guard w/Warn 9.5 XP winch, PIAA bulbs, Line-X bedliner, AWS Black tool chest, Extang tonneau cover
    Weather Tech floor mats
    Cover-Craft seat covers
    Dash mat cover
    Formula One window tint
    One black Lab in rear seat.

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