Speedometer jumps up and down

[Serge Verwest]

ve a Rover P6 2000TC from 1971. The speedmeter jumps up and down. Any Ideas?

 

[Penguin]

cable about to break, worn or loose angle drive or faulty speedo

 

[suffolkpete]

What he said, also drive flange at the rear of the gearbox insufficiently tightened

 

[Penguin]

What he said, also drive flange at the rear of the gearbox insufficiently tightened

yes i can see that would do it too as the worm drive would spin on the shaft

 

[Gargo]

speedmeter jumps up and down

It's very excited to see you, take it for a drive.