Misfire once warmed up.
Thread Starter
3rd Gear
Joined: Jan 2021
Posts: 3
Likes: 0
From: Daytona Beach, Florida
Misfire once warmed up.
After searching these forums, I believe my issue to be ICM related, as I have a new optispark in it. Basically, once the motor has been warmed up, it loses hp and stumbles at higher rpm, also has a slight spark tick if I lug it too hard. I think it has to do with the ICM being heat soaked, but it could also be the coil and wondered if anyone had this specific issue set. I haven't gone WOT unless it is above 160*, and once it hits that after the engine has been off for a long period of time, it runs awesomely and revs all the way out, but even coming off the interstate at 190*, it still has the high end stumble, so I don't think it's anything to do with my coolant being too hot. If it is the ICM, I don't particularly want to replace it with a junk one from advance, but all of the MSD one's come in a fairly expensive kit and don't seem to be for sale on their own.
Any help is appreciated.
Any help is appreciated.
