bought a cheap subaru, needing some help with it. I have read a ton on the forums and still have not found anyone explain my problem.
93 2.2 NT A/T AWD Legacy wagon, paid $800 has 166K (was "supposedly" rebuilt motor and tranny 20K ago)
When I bought it the guy said it needed tires badly and drove very messed up due to this. I arrived and all tires had good tread, one (rear) had a plug. Car drove like crap as expected, ran great, but jerked, wobble, and bounced.
Took car in and had both front tires balanced, made a huge difference, car no longer jerked from side to side and vibration/wobble/bouncing was much much better, problem still not cured though. So I took it to a mechanic, they replaced both front cv axles and it didn't change a thing. They stated they looked over brakes, rotors, hubs, ect and found no problems.
The problem seems to be coming more from the passenger side or middle. When driving the car it has a "bounce" type "vibration" (?thump?) that is consistent with the wheel spin, like at the same velocity of the tire, like something happens once per rotation of the tire. It feels like a separated tire on the front passenger, but I had them checked and also switched them out with some others I bought just to make sure and no difference, still did it.
I put the FWD fuse in and that didn't make any difference either, but I was able to jack up the front on stands and slowly run the car. This is where I noticed the front pass tire is not getting any power, its pretty much all on the driver side (I could stop the pass tire with my hand). So I'm guessing something in the diff is messed up, but what would go wrong inside the diff to cause this?
Also when the front was on stands and it was in drive I could NOT hear, feel, or see any vibrating thump...
Any and all help is greatly appreciated!
EDIT: also this thumping occurs starting at about 10mph all the way up to 45 (won't drive it over that), it also doesn't matter weather your on the gas or off, straight or turned, its a very consistent thumping...