- Joined
- Jun 9, 2012
- Messages
- 1,053
- Reaction score
- 3
- Location
- Centralia Illinois
- My Bike Models
- 1984 GL1200I
1988 GL1500
Did an engine change because one cylinder showed 120psi, rest were over 150psi.
Now when the RPMs go below 2000, the tach drops to zero, even though the engine is still running (poorly). The tach gets power/signal from a yellow/blue wire that connects to the ICM and one ignition coil.
Does the tach drop mean that the ICM is not signalling that coil to fire below 2000 RPM? If so, should I expect an ICM failure shortly?
Guess I can change out the ICM and see what happens.
Now when the RPMs go below 2000, the tach drops to zero, even though the engine is still running (poorly). The tach gets power/signal from a yellow/blue wire that connects to the ICM and one ignition coil.
Does the tach drop mean that the ICM is not signalling that coil to fire below 2000 RPM? If so, should I expect an ICM failure shortly?
Guess I can change out the ICM and see what happens.