Odometer not working

Have 92 Honda accord manual shift ( 5 speed ). The trip and car odometer just
stopped working. The speedometer is working just fine. Where should I look to
repair this problem? The speed sensor or ? Any help greatly appreciated.

 

It is not going to be the speed sensor, as that would kill the
speedometer as well (unless the speedometer is mechanical and the
odometer is electronic). My guess is something like a broken gear in the
odometer assembly. An many units there are nylon gears pressed onto a
small steel shaft, and sometimes the gears start slipping on the shaft.
My brother repaired this kind of failure on his car. Basically took the
gear of and cut a slot in the shaft and the gear and glued in a tiny
key.

 

A tiny motor that spins the odometer gears. Supply power to the
motor to see if it spins, first spin it by hand in case a roach has
manage to crawl in the space and lodge itself between the gears. I've
open these instrument cluster several times and tend to notice
corrosion deposits on the solder and terminals. Simply re-solder
them should do the trick.

Notice that the rear of the instrument cluster board has special
screws design to be torque to, say, 2 ft-lb. If they're off, your speedo or
other displays likely won't work. This isn't a fact or concrete rule
but what a NIGHTmare to notice that it won't work weeks
later.

Tib

 

Tibur Waltson wrote:

Good point about the motor. In most cases these are stepper motors, and
you can't simply apply power to them to make them run. You need to apply
carefully phased pulses to several input wires, and without a pretty
elaborate setup this is not easy to do.

Another thing is that usually when stepper motors don't run, the problem
is with the electronics that drive it rather than with the motor itself.