At low speed my speedometer jumps. I think its the speedometer cable. Any thoughts?

I did a few searches and found :speedometer bounce" could be the cable or the gear. I think its the cable. I had cleaned it out and lubed it with cable lube when I was putting it back together. Cable lube is very thin. The car sat for 25 or so years before I put it back on the road. The bounce post said to use heavy gear oil. I'll give it a try and report back.

Edited October 29, 201411 yr by philbar73

I had the same problem. I just took the cable out of the speedo and then put it carefully back in again and it no longer bounce. I have taken my speedo out many times and it seems like you sometimes can get the cable in a little bit wrong and then it bounces around.

I cured my speedo bounce by replacing the speedo cable.  The inner cable was slightly kinked and the outer jacket was worn through.  Documented here: 240z-rebuild/speedometer-cable-replace/