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you could have a bad harmonic balancer on the front of the crankshaft. sometimes they are known to separate. also, really worn out u-joints in the driveshaft. Or a driveshaft that is bent or out of balance you could have a bad harmonic balancer on the front of the crankshaft. sometimes they are known to separate. also, really worn out u-joints in the driveshaft. Or a driveshaft that is bent or out of balance

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16y ago
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