My odometer is not working. It stopped rolling at around 136000 miles about a month ago, and the one that you can reset also stopped working. The speedometer works perfect and everything else works also, check engine light, turning signals, etc. what could be the problems? Might it have broken gear teeth that use to turn the odometer ?

 

Try re-soldering the circuit board in the speedometer / odometer head. There is a separate circuit with a small motor that drives both odometers.