I have an 88 comanchie, 4.0 with auto trans that does not up shift, i have to do it manually, any idea's someone mentioned it could be the T.P.S. (throttle positioning sensor) never the less i brought it to a transmission shop and the guy there tells me he has worked on it for 2 hours and cannot tell me what is wrong with it, 1st it was the TPS, then he said I have no power going to the tranny, then he tells me it could be the computer or some other type of sensor. Yet now i owe this guy $100.00 diagnosis fee and he can't tell me what the problem is so i am taking it off him today. can any one help or sugest a good tranny shop in the West Roxbury, Mass Area? Please help
Thank You :hijack: