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Discussion Starter · #1 · (Edited)
Hi guys, ever since I've had my '02 WRX it would always buck as I let off the throttle quickly, as well as get back on the throttle quickly. If I let off the throttle slowly, it does not buck that bad. Accompanying this bucking is an audible "clink" noise coming from the rear of the car. I must also add this problem is only apparent in the low gears (1,2, sometimes three) and at high rpms. I had a shop check it out and they said it is a combination of the rear differential bushings and outriggers being too worn and moving around, as well as the rear right axle. While I agree with their diagnosis of the bushings I do not agree with the axle, because if it was the axle wouldn't I get a constant clunk/noise throughout the entire power band (i.e. under heavy acceleration)? Now, that was 3-4 months ago. The problem has gotten progressively worse to the point where no matter how light I am with the throttle the car bucks in any gear at any rpm. Also, the "clink" noise is so loud I can hear it over my music, and I listen to music pretty loud sometimes. Now, I understand that this is actually a pretty common problem. I will also attach link down below with other thread(s) I have found of the same problem, some people can explain it better than I can. What also puzzles me is that some people have installed the TiC Klunk Killer and the tranny mounts, and the problem has actually gotten worse! Any ideas? I am replacing the transmission and differential(s) fluid this week as well, maybe that would help it a little bit.

http://www.clubwrx.net/forums/gener...-lower-gears.html#/topics/134344371?_k=5cb68m
 

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Discussion Starter · #2 ·
Update: I had the differential and transmission fluid changed today. The transmission expert told me that the "clink" noise was my exhaust hitting the frame (it is a Tsudo 3.5in catback). I was also told this by another mechanic so I am starting to believe it. As for the bucking, he said it was normal for the manual, especially with a stage 2 clutch like I have. It has also gotten a bit better since I had the fluid changed. However, the next problem is the rear differential. After the mechanic opened the plug he immediately contacted me notifying me that there was a considerable amount of metal shaving on the magnetic plug, and from the pictures he sent me they look to be decent sized as well. So being that the rear diff is on its way out, I would say I am in the market for a new one. After some searching around, it seems the only option is to go with an OEM used one. Does anyone know anything I don't? Is there a company making something a little stronger than stock? I just want to know what my options are.
 
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