- Joined
- Jun 2, 2012
- Messages
- 25,291
- Reaction score
- 8,296
- Points
- 113
- Location
- canada
- Vehicle Year
- 1994
- Make / Model
- Ford
- Transmission
- Manual
Was the belt guide washer put back on, its a larger keyed washer that holds the belt onto the crank gear so it doesn't "walk off", its not that thick but is a spacer for the hub assembly
The hub assembly has the vane on the back side, it passes thru the crank sensor slots, as it rotates
So hub assembly needs to be spaced so vane can travel thru the slots, not too close and not to far away
The 1989-1994 spark system was self contained as far as startup and idling
Crank sensor========ICM===========coil packs
The engine computer did "advise" the ICM on spark advance, but ICM system didn't "need" that for start up and idle
Computer has engine temp and engine load info, so it serves same purpose as "vacuum advance" did on older systems, i.e. not needed for start up but is needed for driving
The 1989-1994 also used a spark inhibitor for driver side coil pack and spark plugs on start up
The drivers side(intake side) will have NO SPARK when cranking engine over
Only passenger side(exhaust side) spark plugs will have spark when cranking
At 400rpms and higher(engine started) drivers side coil pack will start to work
The hub assembly has the vane on the back side, it passes thru the crank sensor slots, as it rotates
So hub assembly needs to be spaced so vane can travel thru the slots, not too close and not to far away
The 1989-1994 spark system was self contained as far as startup and idling
Crank sensor========ICM===========coil packs
The engine computer did "advise" the ICM on spark advance, but ICM system didn't "need" that for start up and idle
Computer has engine temp and engine load info, so it serves same purpose as "vacuum advance" did on older systems, i.e. not needed for start up but is needed for driving
The 1989-1994 also used a spark inhibitor for driver side coil pack and spark plugs on start up
The drivers side(intake side) will have NO SPARK when cranking engine over
Only passenger side(exhaust side) spark plugs will have spark when cranking
At 400rpms and higher(engine started) drivers side coil pack will start to work