Cylinder 1 on my 05 CTS 3.6 is misfiring
I've changed the following:
After changing all of this and still seeing the problem, I tried swapping the coil and injector with another cylinder to see if the problem shifted, but it's still misfiring on cylinder one.
Now I'm thinking it might be ECM. While the car is running I can sometimes hear the misfire through the intake. This leads me to believe that the computer is just firing that cylinder at the wrong time.
Has anyone had any experience with an issue like this? Is there anything else I can try before buying and programming a new ECM?
I've changed the following:
Spark Plugs
Coil
Injector
Injector Wire
Coil
Injector
Injector Wire
After changing all of this and still seeing the problem, I tried swapping the coil and injector with another cylinder to see if the problem shifted, but it's still misfiring on cylinder one.
Now I'm thinking it might be ECM. While the car is running I can sometimes hear the misfire through the intake. This leads me to believe that the computer is just firing that cylinder at the wrong time.
Has anyone had any experience with an issue like this? Is there anything else I can try before buying and programming a new ECM?