1991 Ranger has a code 18?

Answer 1

The chances of having a code reader giving you a code 18 are about as great as a TFI box of a 1994 and older F-150 leaving you stranded in the middle of a desert.There's a spout signal that comes from the PCM(Powertrain control module)And calculates SAW (Spark angle word) inside the ICM. I have a ranger that was immaculate before a massive front end collision , the truck has no fenders and there's a ground pin that needs to be grounded on the backside of the ICM. If that doesn't fix the problem, there's an open spout circuit somewhere between the EEC. (PCM)And the ICM. Try finding something to give you an inside look at the ICM.