speedometer stopped working whats up?

thanks Bret, so far I have checked and I have no cruise control and the odometer has stopped of course only when the speedometer has stopped. all fuses are good and am wondering how do I tell if it is a speedometer failure or a circuit board. also how difficult is that to replace. estimate of repair would also be helpful. Thanks, ninjamom

You've done about as much diagnosing aas you can without an electrical multi-meter that measures voltage, amperage and electrical resistance. The next step is to check the electrical signal coming from the VSS when the rear tires are spinning. If that signal is OK then the same signal needs to be checked at the speedometer to eliminate any issues with the wiring. After that it can be tough to determine whether the circuit board or speedometer is bad. It may be worth having a used instrument cluster installed if the wiring and sensor are ok. Do you have a regular shop that you take your Volvo to?

no just bought the car used a few days ago for first time teenage driver. i believe if i pass this info. on to a mechanic friend of mine we might have a better heads up of where to start. Thanks for your help. Sure hope we can fix it. Seemed like a good choice for a teenager's first time car.

Agreed, this is a very good first car. Good luck! Make sure your teenager has the RepairPal app on their phone! http://repairpal.com/mobile

thanks will give it a try! usually never use cruise control.