I have 1995 3000gt base. The over drive doesnt work right. I knew that when i bought it but i juist wasnt going to use it. I had my car in the shop getting the fluid changed on the tranny and he told me that i was burning out the tranny every time i went on the highway and didnt use the the overdrive. My question is when i press the button the car is basically going into neutral. It will just rev when you hit the gas. Could that be a ecu problem or is the clutch for the overdrive in the tranny gone and needs to be replaced.

 

It is the end clutches on the tranny.. IPT Performance Transmissions sells upgraded ones (compared to stock ones).