Thanks guys, sorry about the limited info, I bought my second 1990 thunderbird sc with 105000 miles on it and yes the odomiter still works, but anyways I payed 600 for it and its easly a 10 out of 10 car, well after I replace the trany, I think its a locked torque converter because its locked in overdrive, I can put it in N but if I try 1st,D,
R or P it kills the car, is the trany from a regular 90 3.8 thunderbird the same? I thought the were diferent because of the electic mechanical lockup?