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2001 Buick LeSabre

Question: cly misfireing

Question

eddie01, East Hartford, CT, January 30, 2010, 09:06
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I PULLED A CODE OF THE COMPUTER PO300 RANDOM/MULTIPLE CYL MISFIRE DETECTED. CAR HAS 120K. SERVICE ENGINE LIGHT ON.

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  • Answer #1

    Bret Bodas January 30, 2010, 12:34
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    Check this out: http://repairpal.com/OBD-Code-P0300

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  • Medium-star Best Answer
    gmmastertech January 30, 2010, 13:15
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    Get it fixed asap, could be leaking coolant in to engine through leaking upper intake manifold. Check your coolant level in overflow bottle and radiator (when cold) to verify. If it is a leaking intake could cause engine to hydrolock and more severe damage will result.

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  • Answer #3

    igmosblossom April 07, 2010, 11:11
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    I just had simular problem. Was the ignition control module. Runs great now. No misfiring.

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