Tach Problems

[Jesus Freak]

Gotcha. Sorry for the distraction.

Stay focused. You can't discern RPMs from the temperature of the water.

 

[Jesus Freak]

Other posts had some great information. I believe to have had some tach. weirdness on my 88 idi due to faulty/corroded ground wires on the battery terminals. The tach would be working fine then drop to 0, then randomly come back. Just another thought

He's trying to get a tach sensor so he CAN have tach weirdness, like the rest of us.