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View Full Version : Why does my rmp sits at zero while car is running?

dfuller0227
Nov 3, 2012, 05:35 PM
Why does My Engine is Run. But My Tachometer Sits at Zero and Doesn't Register Any RPM?
TxGreaseMonkey
Nov 4, 2012, 05:15 AM
BLU wire not attached to ICM, faulty ICM, or faulty tach.