htrow out bearing, maybe? Nissans are notorious for being a bithc in reverse (you sometime have to shift to first and then into reverse).... other than that... I'd have to see it.
__________________
Doogie: "Hey did you notice I was
tandem with you slidin around that corner?!"
Sonik: " Cool! Did it look hot?, cause if you ever get that close to f'ckin my car up again.... the
fuzzy balls hangin from my mirror will be
yours 
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