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Weird Vibration

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Old May 26, 2008 | 02:39 AM
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94flavette's Avatar
94flavette
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Default Weird Vibration

Tonight I noticed a weird vibration in my '94. Anywhere between 1,000 and 1,500 RPM I can feel a vibration that seems to occur every other time through the firing order. It's not overly noticeable, just a very small stumble. It happens in park and drive so it's not a drive line issue.

Ideas? Don't say the "O" word...
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Old May 26, 2008 | 02:49 AM
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Originally Posted by 94flavette
Tonight I noticed a weird vibration in my '94. Anywhere between 1,000 and 1,500 RPM I can feel a vibration that seems to occur every other time through the firing order. It's not overly noticeable, just a very small stumble. It happens in park and drive so it's not a drive line issue.

Ideas? Don't say the "O" word...
O word....
Goodness it doesnt sound like it but it could be the optispark...
who knows if anything might want to let it sit while someone is holding it at 1000+ rpm to hear it closely underthe hood check for knock, valve float your guess is as good as mine.
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Old May 26, 2008 | 08:43 AM
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No optispark here, but check your vibration damper (front pulley on the crank to some).
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