Question about 1986 Pontiac Fiero

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Engine turns off when coming to a stop

I have an '85 Fiero GT with a 2.8L V6, 5 spd trans. Car runs great except when coming to a stop and depressing the clutch, the engine dies. It starts right back up again and runs fine. I've changed the EGR (O2 sensor) and TPS, plugs, plug wires, rotor, points, etc. Nothing seems to help. Any idea why this is happening? Thanks for your advice.

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  • lgbennett Feb 10, 2009

    Yes,



    The engine is fuel injected. Fuel pump relay has been changed.

  • lgbennett Feb 10, 2009

    By the way, engine idle is constant 700rpm. Not varying up or down. Engine starts easily.

  • lgbennett Feb 10, 2009

    Thanks..I'll give it a try. I apprecite the advice..



    Larry

  • yadayada
    yadayada May 11, 2010

    is this engine fuel injected?

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  • Pontiac Master
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I have used this procedure for years.
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 Feb 10, 2009

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