97 D1 speedometer problem

boxster

Well-known member
Jun 1, 2009
472
96
Fallbrook Ca.
Speedometer won’t register past 60mph at speed. Then when at stop it’s at 10mph. What’s could be the problem? Any thoughts appreciated.
 

CORover

Well-known member
Jun 11, 2007
745
65
Colorado, USA
Do you have a monitoring "app" insert Kennith's ire here... to see if the speed is reported via the computer. If speed is correct on the app and not the speedo, the VSS is good but the speedo is bad or vice versa. I use Torque pro for things like this all the time. it will also tell you verbally if you wish that it has detected an error whether is throws a dash light or not. Some DTCs will and some will not.