« Reply #6 on: Jul 30, 2003, 12:41AM »
It could be-
wheels need aligning, wheels need balancing, uneven tyre wear, unbalanced drive shaft, worn out diff, worn or loose f/r wheel bearings, there's lots of things that it could be but firstly is it primarily a speed vibration or one that only happens in 4th and 5th. I know my old Bluebird (which I just happened to see today driving around Adelaide - she's still looking good!) it had a definite diff whine almost the second you hit 80.... anyway, we had a bad vibration problem with my mum's Festiva and it was due to a) a large dent in one of the rims, and b) a bubble on one of the rear tyres. You might want to check these things out just as a precaution. Also do a cursory check on your front and rear wheel bearings.
Hope this helps a bit
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