1983 928s auto speedo problem

[83' 928s auto]

First i just wanted to say hi to all my fellow 928 owners. i have a 1983 928s auto and the speedo sometimes works and other times dosent. But all the other guages do work does any one have any suggestions to remede this problem?

[Iggy]

Same problem here. The speedo gauge doesn't begin to work until I hit about 20-25 mph, then it's fine until the next time I come to a complete stop.

No suggestions on a fix yet, but I'll post it here if I find the culprit.

[Wayne 962]

Could be a sender problem, 83' 928s auto, as it sounds like it might be a loose wire or connector to the rear of the speedo. Tach works fine I assume?

Iggy - this definitely sounds like a stuck gauge problem. I have a similar one with my VDO tach in my BMW. Sticks and then flys loose. It's spring loaded in there, and might just be stuck until the spring has enough force on it to break it free. If you can, open it up, and place a tiny (really tiny) drop of oil they use for model trains on the inside gears right before the needle. That should free it up...

-Wayne

[Joe Ricard]

Loose wire on the intermitent speedo. Check the connection in the spare tire well. You should see it come throught gromet right side front of spare tire.
The other prblem sounds like a gear geting ready to go. the little palsic bugger in the speedo.