When I drive my car for about 5-7 miles and come to a stop, on restart the transmission will not shift it gets stuck in 2nd gear after I stop the car for an hour and drive again at 45 mph its shifts fine?????
That means the transmission is going into Limp mode - something's wrong that is making the car believe it can be damaged by the speeds the upper gears will allow you to reach. For starters, check the fluid level (or just change it - it's not a bad idea), and disconnect the battery for an hour or so to put the ECU into relearn mode - this will clear current fault codes and allow you a fresh start to see if the condition reappears, or if it was a fluke failure of some part that caused the car to repeatedly go into limp mode.
I was driving my 1990 nissan 300zx 2+2 auto trans and it stopped going it would rev up but it wouldn't go anywhere I tried going in R 1 2 but it would just rev up one of my friends believes it might be the speed sensor?
A little late, but for future users who might find this - your problem is either low transmission fluid, a bad solenoid, or a burnt out shift band. Check your transmission fluid (or have a Jiffy Lube check it for you) and if it's full then smell it. If it smells burnt, you've got a bad shift band. If your fluid is full and doesn't smell burnt, then it's probably a solenoid. Both a shift band and a solenoid will require a rebuild by a mechanic. If the fluid is low, refill it and see if that solves your shifting. If not, take it to a mechanic. If it does solve your shifting problem, then check for leaks, because transmission fluid doesn't go anywhere unless there's a leak.
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