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Subject Very light vibration at 1200-1500 rpm. No missfire
     
Posted by LA z on August 31, 2020 at 3:14 PM
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Message Driveline wise: Car has new clutch, resurfaced flywheel, 5000 miles. New Transmission mount, 4000 miles ago.

Engine: 120K timing belt, 740ccs, plugs, coilpack harness, upper plenum and associated plumbing gaskets, hoses, etc. replaced 5000 miles ago. Engine is smooth and no codes.

Vibration started to occur about a few weeks ago. Started up cold, slight vibration at cold idle. Continued till warm idle. After engine warmed up, no vibration at idle, but...

Vibration still exists when engine is warm or cold between 1200 and 1500 rpm. Clutch in or out.

Any thoughts where to begin?

     
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  • Very light vibration at 1200-1500 rpm. No missfire - LA z 15:14:15 08/31/20
 
     
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