Recently my speedometer started going out of control. When I would get up above 3 rpm the needle on the speedometer would go back and forth all the way to 140mph. Finally two days later it just stopped working then I noticed my check engine light went on and my odometer stopped working also. I'm thinking it just may be a bad censor.

Any suggestions or answers to my problem?

Chris

take it too an autozone and have them read the codes off of the ECU

How was the car shifting....did the tach have any play to it? Something like this happened to me once....and I almost blew my tranny. If u find out what it is let us know