Wondering if anyone has had to replace there ICM, igintion control module, and if so what was the car acting like with the bad ICM.

 

Never had to, how's your car acting up?

 

The car doesnt idle for anything. My friend put on a Msd ss coil and it got messed up and had to take it off, in the process on it getting messed up, the car started idling at like 1200-1500, surging in between 1200-1500.