Speedometer not working - Volkswagen Repair Manual for Rabbit 75-84, Rabbit Convertible 80-84, Golf & Cabriolet 85-92, Jetta 80-92, Scirocco 75-88, and Pick-up 80-83
Vehicle Parts & Accessories - Haynes - Volkswagen Repair Manual for Rabbit 75-84, Rabbit...
Answers & Comments
It will be either the cable (most likely) or the gauge itself. There is no easy way to test it. Remove the speedometer cable from the transmission and turn the gear on the end while an assistant watches the speedo. If it moves it's an internal transmission problem. If not remove the gauge cluster and perform the same test while your assistant watches the end of the speedo cable. If it turns it's the gauge itself and it will need to be replaced.