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Old 10-17-2010, 06:42 PM   #3
KevinH1990
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Join Date: Feb 2006
Location: Virginia
Posts: 1,739
I'm pretty sure that your check engine light would illuminate if you lost a coil pack or a spark plug. I had a CEL illuminate when one of my coils went bad.

I don't think it is a wheel weight. The vibration from a wheel weight would be dependent on the car speed, not the engine speed.
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