odometer question
Thread Starter
Instructor
Joined: Apr 2005
Posts: 201
Likes: 0
odometer question
My odemeter stoped working, I am not racking up the miles anymore tach still works and my speed still works, can anyone suggest where I can start looking for a possible problem and fix.
Thanks
Thanks
Racer
Joined: Feb 2005
Posts: 258
Likes: 2
From: Boise ID
If your SPEEdometer works, and your Odometer does not, I would suspect something broke inside the speedometer assembly. I've always imagined the odometer working off a gear drive from the speedometer or something.
Maybe somebody that knows what they're talking about will reply too...
I do know there are a few places that will rebuild/restore speedometers, maybe it'd be a good idea to call one of them. Off the top of my head, Ecklers & Mid America both offer this.
Hope this helps a bit,
Dan
Maybe somebody that knows what they're talking about will reply too...
I do know there are a few places that will rebuild/restore speedometers, maybe it'd be a good idea to call one of them. Off the top of my head, Ecklers & Mid America both offer this.
Hope this helps a bit,
Dan
Team Owner
Joined: Jun 2000
Posts: 38,923
Likes: 1,481
From: Southbound
Cruise-In II Veteran
The same thing happened in my '68. The fix is a replacement speedo head. You will not need a complete speedometer, but you will need a head. It's not likely you will be able to repair the odo since most of them are essentially irrepairable units done long ago to keep resellers from turning back the mileage on a used car.
Pro
Joined: Oct 2003
Posts: 641
Likes: 2
From: Storm lake Iowa
here's a link to a complete rebuild procedure:
http://www.corvettefaq.com/c3/RebuildSpeedo.htm
Here's one to change only the odometer gear:
http://www.corvettefaq.com/c3/odometer.doc
...which is likely all you need. The advantage of this approach is less dissasembly required, no need to remove the needle, and less likely to mess up calibration (which you CAN'T do yourself, and would need to send out). It CAN be done, I've done it myself. The hardest part is getting the dash out to remove the speedometer so you can work on it.
[edit] I assumed you have the mechanical speedo pickup, which is actually magnetic. If you have a later model C3, then the guts and procedure may be different...early c3s will be as in the links above.
http://www.corvettefaq.com/c3/RebuildSpeedo.htm
Here's one to change only the odometer gear:
http://www.corvettefaq.com/c3/odometer.doc
...which is likely all you need. The advantage of this approach is less dissasembly required, no need to remove the needle, and less likely to mess up calibration (which you CAN'T do yourself, and would need to send out). It CAN be done, I've done it myself. The hardest part is getting the dash out to remove the speedometer so you can work on it.
[edit] I assumed you have the mechanical speedo pickup, which is actually magnetic. If you have a later model C3, then the guts and procedure may be different...early c3s will be as in the links above.
Last edited by Grinchia; Jun 22, 2005 at 12:03 PM. Reason: additional info
Drifting
Joined: Aug 2002
Posts: 1,731
Likes: 22
From: Marietta Ga.
I read somewhere that early sharks will have problems with the trip odometer switch hanging up and preventing the odometer to work. Have you recently reset your trip odometer? If so you might try resetting it a couple of times to jar it loose.
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