1990 350 tpi. Okay well i bought my camero about a month ago and when i first had it on the road if i got over 3500-4000 rpms id get this massive vibration. At first it seemed like it was coming from infront of the dash....then it seemed more localized to from near the transmission like right beside my right leg but you can feel it through the shifter ****. My friend also said when he sat in the back he could feel the vibration too so ive had a tough time pin pointing it. The sort of vibration was similar to something turning over ie drive shaft it was like you get the heavy vibration for a half second and then off for a split second back on for a half second off for a split so the sort of vibration from something turning over (if you dont understand ill try to explain better)....the tranny mount bushing is still there and i replaced the u joints but that had no effect. Now the problem has gotten much worse to the point where i get the vibration during all acceleration and deceleration. Its really weird because it seems fine at first but as the car warms up it gets worse and worse and worse until the point where it becomes totally undriveable.

I took it to my mechanic and he took just a quick look at it and told me i wasnt getting the proper current coming off the alternator and that this would effect my computer and how it operates potentially causing the vibrations. Heres a couple of things.....one doesnt the computer just pull from the battery so even if the alternator isnt working at 100% shouldnt my battery just drain slowly i wouldnt think this could effect my computer. Second any way in hell the computer could cause this sort of problem because i really doubt it. Third my mechanic has been for a ride in it and knows what the problem feels like and im 99% sure it has to be drive train related.
Any chance it could be because of the alt.?

If youre still reading this thank you. Anyone have anything to check possibly towards the rear end of the car? i also hear a slight whirring coming out of the rear end but i think it just needs new gear lube. Any tips for things to check i am greatful for im at a loss and think my mechanic is a crazy man so hes not much help.

 

Bent axel?