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Old 01-27-2018, 10:36 PM
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Diseasel300 Diseasel300 is offline
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Not sure how the clutch pedal would affect the differential, but ok...

The center bearing mount does allow the driveshaft to move a bit. It's a rubber "bellows" looking piece to allow some lateral movement. What isn't normal is if the driveshaft just flops around, usually means that the rubber has rotted and the bearing is just flopping around unrestrained.

If you know the popping noise is coming from the rear end, don't forget to check the CV joints on the half shafts. If the boots have failed, or the grease has run out, they can make a heck of a racket when they fail.
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