speedo works, odometer doesn't

[Lloyd]

My speedometer is working, but my odometer is stuck. Anyone have any suggestions on how to fix this problem? thanks, Lloyd

 

[Heus33]

My odometer didn't work either. I took mine apart to rebuild it (here's a good tech article that will show you step by step - http://classicbroncos.com/tech/speedometer-rebuild-101).

Once I had mine apart I found a part of the structure that had snapped - some kind of bracket that held the odometer in. I used some JB weld to repair it and its been fine ever since.

Hope that helps.

Tom

 

[DirtDonk]

Yep, sounds like you'll have to dig into it a bit to see if a gear is stripped, or if you have a problem like Heus'.
At least you know the cable is spinning, and that the speedo is free and not jammed up. But the odometer is mechanically driven from the cable. The speedometer needle is magnetically spun by the cable and not directly connected.

It's not difficult to pull one apart at least, so pop it out and see what you can see. Good time to replace the bulbs, check the connections and the output of the IVR, and add a good ground from one of the screws to the dash or body directly.

See? You knew there was a good reason to get all limbered up for some under-dash action!
Just kidding. You don't even have to stand on your head sideways to get the instrument cluster out. It's one of the few dash projects you can actually still do from a semi-normal position.

Paul

 

[Lloyd]

Thank you Tom and Paul for the tips. Just the info. I was looking for. It sounds like my odometer gear is stripped or not making proper contact.

Paul, I know what you mean about getting all limbered up. The brake switch on my CJ7 needed adjusting after adding a booster. I'm still trying to block that job out of my memory.

 

[Lloyd]

Paul, you mentioned adding a ground. My cluster lights keep blowing fuses. I wonder if that could be a ground issue? Also, showing my ignorance, what is IVR?