Shifting in the Delorean once underway in drive 3 is entirely controlled by the govenor computer assembly. If you do indeed have a shifting problem then that is where to go. There are some simple things to check first though. Fluid level and condition. Shift linkage adjustments. Throttle cable adjustments. The integerity of the wiring to and the downshift microswitch (if the wiring is burnt and grounds out it will force downshifts). Bad connections to the large plug on the firewall. Make sure that what you feeling is downshifts and not slipping, check the line pressure. If all of these things check out then you could have a bad shift computer. Installing the lights will only confirm that the shift computer is indeed shifting the trans and you already know that what you want to find out is why. A bad shift computer will tend to act up more when heated, sounds like bad solder joints and can be easily resoldered. Refer to the archives. David Teitelbaum vin 10757 --- In dmcnews@xxxx, RJRavalli@xxxx wrote: > Hello list I need some help desperately here. I just spent alot of > money I didn't have replacing my auto trans governor. Now I > found that it shifted well until I tried to drive it for more than > 30 minutes. It started to slip out of third after driving it for