1995 Volvo 940 Q&A
1995 Volvo 940 Question: speedometer stopped working whats up?
Your car uses a Vehicle Speed Sensor (VSS) on the outside of the transmission it produces an electrical signal that tells the speedometer gauge how fast the car is going. See if when the speedometer is failing if the cruise control works (if it doesn't it's most likely the VSS or possibly a fuse that has failed), if the cruise control works the speedometer in the instrument may have failed. - patrick mannion
Hey Pat (and ninjamom), if I remember correctly, the VSS is on the rear differential on this vehicle. They didn't fail very often, in fact I'm trying to remember having to replace one for this problem and I can't. What I do remember seeing were the instrument panel circuit boards and speedometers failing. As with any problem there can be several possible causes so try your best to determine what has failed before replacing anything. Bret - Bret Bodas