Codes 18 and 42
1993 Olds 88 3800 series I will start but, runs eratically and acts as if it wants to stall. Throwing codes 18 and 42. My question is, if the crankshaft position sensor is bad, would the car run at all?
I also just recently changed the ICM. Car was running bad before this but would not start at all. Is it possible I am throwing those codes because the ICM was bad?
Or, could I have bad plug wires causing those codes?
Not sure where to start.