Quote:
Originally Posted by uwanna
Think about it for a moment, on earlier cars with CDI ignition, the tach signal is developed IN the CDI unit. Same for DME, as the "CDI" is contained within the DME box. The signal is not driven by any sensor on the engine.
The tach pulses are sent from the DME on DME connector pins #4 and #11. #4 blk/violet wire, #11 blk wire. These wires run direct to the rear off the tach. Pull the DME connecter loose and check their continuity with a multimeter to the rear of the tach.
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Good suggestion, I'll give it a try if I get time tomorrow. Darn work is going to get in the way of me working on my car!
FWIW I got under the car and checked the ground strap at from the trans to chassis and all was good. I cleaned it and reconnected. Still no tach.