91 Buick Riviera. transmission slipped, check engine light went on and speedometer quit working.
3 Answers
transmission clutch pack is worn. vehicle speed sensor (vss) should be replaced. seems about right for the car's age.
ThatDeal2013 answered 11 years ago
I would have to agree with Jason. The input speed sensor needs replacing. This malfunction will cause a number of warning lights to illuminate. Another cause could be the transmission shift solenoids have worn, causing the transmission to go in limp mode . Do not add more transmission fluid, this is a common mistake people make when transmission problems occur.
Whereas I had to replace transmissions in two of my Rivieras... a third one with the problems of slippery,CEL and speed odometer needle moving all over the place was solved by changing the ECM. I agree with Tennisshoes have them checked>>>SEMPER FI Good luck.