I was pulling the car into the garage to park it, and all of a sudden before I shut it off, the idle went way down and was missing and stuttering alot. Service engine soon light came on, the scan master turned off when this happened. So, I turned the car off, and started it up again, it was ok for a minute, I put the malfunction code on my scanmaster, but when the idle went down again, the scanmaster turned off when the service engine soon light came on. I am thinking it is ignition related. Can anyone help me with this matter?