90 Gt Problems Any Suggestions? Clunking

mikestang63 said:

your driveshaft may be twisted or out of balance.

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jrichker said:

Look at the rear flange of the driveshaft; there should be a dab of yellow paint on it. There should be a similar dab of yellow paint on the differential yolk. The two dabs of paint should be as close to each other as possible. If they aren't, you have an out of balance condition. The fix is the remove the bolts from the rear driveshaft and then line up the dabs of paint as closely as possible. Then put the bolts back in and tighten them up.

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