- Joined
- Aug 15, 2007
- Messages
- 1,613
- Reaction score
- 46
- Points
- 48
- Location
- toenails of foothills NW of Atlanta
- Vehicle Year
- 1985
- Make / Model
- ford
- Engine Type
- 2.3 (4 Cylinder)
- Engine Size
- lima bean
- Transmission
- Manual
- 2WD / 4WD
- 2WD
- My credo
- vertical and above ground
Quote:We saw that the top left bolt is missing from the ICM. So I'm wondering could this be a grounding issue with the ICM?
I understand that the coil packs must have all their mounting bolts installed to get working grounds for all coils, so maybe the ICM needs its bolts too...
If you look, you can use a scope to check the presence of voltage to 'charge' the coil, and lack thereof that causes it to fire by probing the connectors. If it is an 8-plug head, remember that the intake side plugs do NOT fire all the time, only the exhaust side are full-time firing.
tom
I understand that the coil packs must have all their mounting bolts installed to get working grounds for all coils, so maybe the ICM needs its bolts too...
If you look, you can use a scope to check the presence of voltage to 'charge' the coil, and lack thereof that causes it to fire by probing the connectors. If it is an 8-plug head, remember that the intake side plugs do NOT fire all the time, only the exhaust side are full-time firing.
tom