Question about 1999 Chevrolet Silverado 1500

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Starts but stalls when put in gear - 1999 Chevrolet Silverado 1500

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  • Anonymous Apr 24, 2009

    what would make your car stall when you drive it for awile

  • yadayada
    yadayada May 11, 2010

    does it drive ok off idle.



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Here is the most common cause of surges and stalls and low idle rough idle, it is the idle speed control air-bypass valve and throttle valve (IAC for short), they get full of gunk over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Posted on Mar 03, 2009


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or pay 700 dollars to install a new one
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