Q: Transmission I think on 1990 Nissan 300ZX

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I just got this 1990 Nissan 300zx It will not roll in reverse. I start it put it in reverse and it will not go. I even turned the key on and put it into nutral to try and push it backward and it still would not roll in reverse. I can start it and put it in Drive and it drives forward fine but it will not go in reverse. What do you think the problems is??? Please help!!! what should I do????
(1) Answer
I had this same issue with my 1990 300zx back in September and it ended up being the transmission. All the teeth were broken off the second gear (which is also used for reverse). I had to have the vehicle towed to a transmission shop because I couldn't get it out of the garage. They ended up having to rebuild the transmission.