THE HARMONIC BALANCER HAS A WOBBLE WHJEN IT IS RUNNING BUT IT SEEMS TO BE TIGHT. WHY DOES IT LOOK TO BE OUT OF BALANCE?
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1999 Oldsmobile Aurora Question: HARMONIC BALANCER
Answer #1DaveJHM June 20, 2011, 22:47Master
The balancer is comprised of the metal pulley and a heavy rubber dampener that smooths out inherent engine vibration at the crankshaft.
It will be bolted down securely, but if the rubber starts to separate from the pulley - then it will wobble and vibrate badly. A diagnosis is very much in order, as soon possible. This pulley can break off.