Thread: Tach not working on 1985 300TD - ALDA related?
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Old 04-08-2008, 10:57 PM
DeliveryValve's Avatar
DeliveryValve DeliveryValve is offline
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Join Date: Jun 2006
Location: Central California
Posts: 4,159
Yes, It could be the wiring is amiss. Look at this diagram and follow it.




Then check the RPM sensor using this method.

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