I brought my 2005 G35x to my mechanic and he says it's the rear differential locking up not letting the rear tires spin at different speeds so the car clunks, pops, jumps and lurches when turning at low speeds and at full lock. I went to a big parking lot and drove the car in circles at more than 25kmh at full lock and it clunked and jumped quite a bit going left and right... It's like driving a drag car in circles it'll jump and clunk if the rear's are fully locked up.

Has anyone else had this problem? If so, will I need a whole new diff, to have it rebuilt (clutches and so on) or have it reprogrammed?

 

Hmm Not sure how that system works on the X. sorry I cant help but im intrested to hear how this works as my next car may be an X

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