2002 Pontiac Grand Am

2002 PONTIAC GRAND AM
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CHART
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Engine Performance problem
2002 Pontiac Grand Am 4 cyl Automatic 214683 miles

I have a 2002 Pontiac Grand Am with 214683 miles. It has a 2.2 L engine. The vehicle has a rough idle and codes that reveal "rapid misfire". I have changed the plugs and did not correct issue.
Oct 13, 2010 at 2:35 PM
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JDL
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What was the actual code? Was it cylinder specific? Fuel-- spark-- compression?
Oct 13, 2010 at 3:20 PM
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CHART
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The code that was pulled up was P300
Oct 13, 2010 at 3:30 PM
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CHART
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also at idle the engine lurges
Oct 13, 2010 at 4:02 PM
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JDL
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Random misfire code, could be almost anything. You may need to have somebody use a scanner that can show misfire data, see if one cylinder is misfiring worse than the others, start with that cylinder. You might check the crank sensor reluctor wheel, also check fuel pressure, with a gage. Spark at all plugs, injector pulse.
Oct 13, 2010 at 4:06 PM
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