Mine did the same thing and i got a ford racing aluminum d/s. The used car dealer got the worst of it though. He bought me new tires to try and fix it. I needed new tires anyways lol. Its been 7 years now and I have a new vibration. I have het to look at it since I dont drive it much anyway.
+1 on tightening the 4 bolts holding up the drive shaft. I had the same problem. I bought an aluminum ds and when I installed it, I noticed the 3 remaining bolts were all loose. Lol,boy was I embarrassed! :rollgrin:
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