Originally Posted by RoadKingRocket
I just bought a 94 F150 XLT...has 118,000 miles on it. So far a great truck for its age/miles. But I am also having the speedo issues that the OP is having. Does fine until about 35-40 mph, then the needle goes all crazy after that. Also noticed the Overdrive acts a bit funny, as well. Could this also be the VSS? Thought maybe the cable was just slipping. Just looking for a place to start...
Start on the back axel there's a sensor on top of the middle of the back axel. Follow thoes two wires that's sounds the same as mine