2.3L ('83-'97) Need to replace my 1992 Ranger engine: 2.3 L, 4 cylinder, 5-speed, floor shifter

[RonD]

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

 

[Serfma]

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

I think the belt guide washer is indeed on, I'll have to check later.

Ok so I'll have to run wires from that sensor to the ECU, shouldn't be that big of an issue then.

Thank you for all the info.

 

[RonD]

Crank sensor wires go to the ICM, on the front of lower intake, the ECU(engine computer) is not involved with spark in 1989-1994, except "Load advance"

 

[Serfma]

Crank sensor wires go to the ICM, on the front of lower intake, the ECU(engine computer) is not involved with spark in 1989-1994, except "Load advance"

Last dumb question - crank pulley has no sort of rubber it seems like. Seems to be metal only, do these not have rubber harmonic balancers / crank pulleys

 

[RonD]

Some don't need an energy absorber, like the "rubber" part, bolt on pulley can serve the same purpose, it would be engine model specific

 

[Serfma]

Some don't need an energy absorber, like the "rubber" part, bolt on pulley can serve the same purpose, it would be engine model specific

Thanks. Yeah since this is a later 2.3L Lima swapped into old and they re used old Lima hub and crank pulley I was worried might destroy engine running it that way (if it was supposed to use rubber harmonic)

 

[RonD]

I4 engines often don't have those types of harmonic balancers, I6 and I8 do, longer cranks
V6 and V8s often do

 

[Serfma]

I4 engines often don't have those types of harmonic balancers, I6 and I8 do, longer cranks
V6 and V8s often do

Could I pick your brain in another thread rather than taking this one over?

Replaced ICM + CPS, getting 2V on top ICM connector power wire, with ignition on when plugging up ICM. Everything else unplugged (note: the wiring in this truck is a rats nest and I might replace entire harness) that's connected to this line. If I remove top ICM connector from ICM I will have battery power. Tried two different ICMs to verify. Only thing I see on diagrams is EEC Power Relay and the EEC itself. Bad computer? Bad ground?

 

[RonD]

Could I pick your brain in another thread rather than taking this one over?

Replaced ICM + CPS, getting 2V on top ICM connector power wire, with ignition on when plugging up ICM. Everything else unplugged (note: the wiring in this truck is a rats nest and I might replace entire harness) that's connected to this line. If I remove top ICM connector from ICM I will have battery power. Tried two different ICMs to verify. Only thing I see on diagrams is EEC Power Relay and the EEC itself. Bad computer? Bad ground?

We can continue in your original post here: https://www.therangerstation.com/forums/index.php?threads/should-i-toss-this-ranger.192458/