2.3L ('83-'97) ICM or coil packs


Joined
Apr 16, 2026
Messages
1
Points
1
City
Wellington
State - Country
KS - USA
Other
Ford Escort
Vehicle Year
1990
Vehicle
Ford Ranger
Drive
2WD
Engine
2.3 (4 Cylinder)
Transmission
Manual
Total Lift
Has tires
Total Drop
Hasn’t rusted out yet
1990 Ford Ranger 4cylinder 2.3L
Sometimes foot to the floor it will not maintain highway speed. Downshift I can maintain speed, but as soon as I put it in high, it starts dropping speed again. Doing a rolling restart, clutch and shut the ignition off then restart. It will reset whatever and it usually will maintain highway speed without down shifting. The only running code was 42 which is HEGO(HO2S) sensor voltage high/system rich. Computer memory code 41(HEGO) sensor signal out of range/always lean or no switching detected. Also code 28 loss of primary tachometer(IDM) right side.
Recently, it started stalling and threw a computer memory code 14 ignition profile pickup(PIP) circuit failure and 88 dual plug input control failure.
Only been mine for about six months, but the spark plug wires looked pretty new till I noticed the coating was scuffed off of one couple months ago, fixed it with some tape. Did you know arcing makes a tick tick tick sound? So I was leaning toward doing the coil packs, wires and spark plugs, but with the rolling restart kind of fixing the power problem, is that the ICM? It was arcing to the alternator, but it was on the same side of the motor as the ICM would that have been enough to slightly fry the ICM.
 
Last edited:

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