I'm sure this has been answered before, but what is the probable cause of my speedometer and odometer turning on and off eratically, TOGETHER. If the speedo starts waving everywhere, the odometer still works, but then when the speedo goes limp to zero, the odometer stops too. Is this the cable, something electrical?

Thanks for the help.

 

Jeff those are the signs that your having a problem with the variable speed sensor or VSS... if you do a search on this forum, you'll find multiple discussions of it dn how to troubleshoot/replace it...

 

Thanks Chrisreyn, can anybody tell me where it is and how to replace it?

 

It's on the driver's side of the tailshaft housing. Often they are just loose.