A misfire is when one or more of the components are missing to make combustion. That is spark, fuel or compression in the most basic terms.
The computer, (Powertrain Control Module) will store faults. IF the fault is bad enough it will set a code. A scanner is needed ito check them.
Autozone can check them for free, but they can not diagnose them. IF you have them checked , we may have a little more to work with. You can buy a code reader also.
I'm not sure if there are two problem happening on this or not.
The shaking at idle while in park gives the impression of a misfire. With that stopping when you put it in gear and driving is odd, then the shifting so high begins to sound like transmission related.
The codes may help greatly on this.
Friday, April 11th, 2008 AT 6:07 AM