Jumping speedoneedle

R

Ragvald

New Member
I have a 2000 TC- 72, it has been standing for a couple of years.
The speedometerneedle jumps up and down. Will i have to fit a new cable?
Is it possible that it need lubrication? I had an Amazon with this problem a long time ago,
i THINK i just changed the cable, but i´m not sure.
Cheers from Sweden!
 
I'd start by checking the route of the cable to make sure there are no kinks or sharp bends, then remove the inner cable and lubricate it sparingly on all but the last 6" at the top end to avoid the grease working its way up and getting into the head.
 
DaveHerns said:
I was going to suggest checking the angle drives but assume this model hasn't got them as Harvey would know !
Click to expand...

Only autos have angle drives at the gearbox end, and (IIRC) only models with the ribbon speedos have them at the top, so this one shouldn't have one at all being a series 2 TC, providing that I'm correct about there not being one at the top when you have the round clock dash.

Just looked on the scans of the parts book and that shows an angle drive at the top with the round clocks, so as you say Dave, well worth checking that too, and making sure it's engaged in the mounting pin.
 
It is also possible that the inner cable has worn a groove in the outer and as it rotate it snags giving the needle flick, very common and cables are cheap.

The cable is easy enough to get to from the inspection hole on the gearbox tunnel, just take care with the retaining bolt it is easy to lose.

Colin
 
When I first got my car it did that sort of thing. Pulled the cable inner out, cleaned it up. Put some down the outer and has been find since.
 
Thanks very much for enlightening answers, gentlemen!
I have the Haynes- book, and there´s no description how to change the cable, i'm sure it won't be too difficult,
but i'm new to these cars so:
any suggestions for working order?
 
Ragvald said:
i'm sure it won't be too difficult,
Click to expand...

You poor misguided person :LOL:
No seriously it's not a bad job just a bit fiddly to route behind the dash, try to get it routed as smooth as possible with no tight bends in it or you'll end up with the same problem.
If you use a new cable this should be very easy as it will still be nice & flexible but a cable which has been on a vehicle for years tends to go hard with age & if it suddenly changes position that can also cause jumping & it's also quite common for it to snap
Regards Colin
 
The needle in my round speedo began wavering at one point years ago, then seized altogether, snapping the angle drive on the back of the speedo. :shock:

I removed the speedo and an instrument repair centre overhauled it. I removed and lightly greased the speedo cable, with graphite if I rememeber, but it was 21 years ago, so I could well be mistaken. Fitted a new angle drive onto the back of the speedo which was then refitted along with the cable and away we went.

Every now and then if the needle starts to waver I'll remove the cable from the back of the speedo and spray in a little silicon. This keeps everythng nice and quiet and the speedo is always fine after such, the wavering no longer a problem.

Ron.
 
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