Hope I'm not steering you wrong here. My 92 W250 is a gas V8. It has the
same speedometer as my 90 D150. They are electronic. No cable to the
transmission. If the odometer works at least the speed sensor (on the
transmission or transfer case if 4X4) is working.
The odometers are what stopped working, the speedometer still works. Thats
why I think it is something internal to the guage, but maybe the sensor for
the odometer is somewhere else? I really don't know.
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