Car Shakes between 20-30 mph

[G20weez]

I recently purchased a 99 G20. The car is great, but it shakes horibly when accelerating between 20-30 mph. I took it to the Infiniti dealer and they told me that the Drve Axels are not factory and they wanted $1800 to replace both of them, Yahh.

I bought 2 Drive axels on line and replaced them myself. NO Help.

Took the car to my mechanic and he charged me $2K and rebuilt the tranny. The car shifts perfect not but the shake remains. Same speed.

I have checked all 4 Engine mounts and they are all in goodshape.

My brother who is a mechanic tells me the problem is in the LSD Axel. Not sure!!

I appreciate any help. I still love the car, but I don't think I can live with the shake.

[AzG20P11]

does the whole car shake, or just the steering wheel?

[gwar28]

Sorry for resurrecting an old ass thread, but did you ever figure this out? Mine just started doing it as well. 99 Auto with 120k.

[trbobrk]

t5s's p11 did that. I drove it around the block and it was crazy shaking in the steering wheel about 25mph. Swapped in my OEM axles and it went away.

[t5s]

http://www.g20.net/forum/showthread....=1#post1605830