91 F250 tach problem

mikeboggess

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Changed the belts and my tach. quit working. Coincidence?, or could I have knocked something loose? The tach. does get some movement at speeds above 60 mph.
 

Macrobb

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It's the sensor right there on the IP gear cover, next to the oil fill port. Check for abrasion / missing insulation where the wires go into the sensor. You may just be able to reposition the lines and have it work again, or need to replace the sensor.
 

mikeboggess

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Thank you for your quick response! I will check that and report the findings. I think I remember my son disconnecting something near where you are speaking.
 

mikeboggess

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Macrobb, you were correct. Both wires are bare and were touching. O'reilley's carries a Dorman part# 926-323 and I will get one today. Thank you and all the other helpful guys that keep me rolling.
 

mikeboggess

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THANK YOU Macrobb, well I decided that trying to repair the exposed wires was futile, I purchased the 926-323 Dorman part and the tach. works perfectly
 
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