can a bad SI board interfere w odometer?

[cunninglinguist]

I just replaced all 4 gears in my VDO odometer. I can turn the gears smoothly by hand, but the odo doesn't work when installed.

My SI board is flaky (I'm quite sure it's dying). Can a bad SI board cause the odometer to not work?

[reelizmpro]

No, if the speedo works the odometer should work as well. If it doesn't, then there is an issue with the motor or the gears.

[AndrewBird]

The wiring going to the speed sensor in the diff often gets brittle and breaks, I'd start by looking there. If the speedo works however, then something else is wrong.

[cunninglinguist]

OK, thanks guys.

The speedo works fine. I guess I will have to look at the circuit board next.

[Gregs///M]

VDO gears are very easy to get backward. Make sure that you are meshing the gears together and not over tightening the cover.