Have a newly purchased 1991 Dodge Spirit with 58K miles, perfect interior and body. A-604 transmission is in limp in mode. Former Chrysler mechanic managing local Aamco Transmission wants to try another TCM because the car was bought with a totally new TCM installed but he says that on scan it says wrong gear ratios even though it is not moving. He wants to try installing a TCM module off of a used vehicle to see if it has the correct program installed. Local U-Pull-It doesn't have any 1991 3.0L V6/ 4 speed OD transmission combos.
Anyone know if other years are compatible to 1991?