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  1. #1
    Sr. Apprentice
    Join Date
    Sep 2008
    Location
    Knoxville, IA
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    65

    Default Idles Rough At Start-Up

    What would cause my 1995 Chevy C1500 Suburban (350) to idle rough at start-up? After it is driven a couple miles it goes away. It doesn't seem to effect the driving of it too much at all. It has been bitter cold here-- single digits and colder. Thanks,Scott

  2. #2

    Default

    The cold is doing it most probably. The "choke" circuit (it's really a computer program in a 95) is most probably having trouble coping with the extreme cold and is dumping tons of fuel into the motor, which can't be burnt quick enough. Once it warms up a little it should run better.

    My Bronco has a similar issue, but it's an 82 and has a carb, with a real choke circuit. Truck ran like junk yesterday because of the cold.
    Christopher

    1991 Chevy Suburban 1/2 ton 2WD w/ chevy SBC 350-3/4 ton drivetrain upgrade w/4.10 gears 200K miles
    2005 Saturn ION-2 Stock 277K miles
    1982 Bronco, 1993 Bronco (sold), 1971 M35A2 Deuce and a Half



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