Thread: Random misfire at idle

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  1. #1 Random misfire at idle 
    Aerhardt92
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    Default 01-08-2017
    Car threw a code last night "p0300" runs fine going down the road. Just has a misfire at idle ..just replaced the plugs probably 7-8000 miles ago with al 104's, can't hear any vacume leaks. Also tried the whole spay carb clean around the intake and didn't make a difference. Any suggestions

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  2. #2 Re: Random misfire at idle 
    Scottydoggs
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    Default 01-08-2017
    plugs might be bad already, or a coil or icm. maybe even the wires if they were not changed.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  3. #3 Re: Random misfire at idle 
    Aerhardt92
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    Default 01-08-2017
    Got her all fixed up!!!! Turned out to be a bad coil pack .

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