I have an 05 GTP with 100,000 on the clock. This thing has had this problem for a while now and I am at wits end trying to figure it out.
It doesnt happen all the time but when it does the engine will be sluggish run rough and seems like the tranny isnt shifting right. If you stop turn it off and restart 99% of the time it resets and will run like a scalded dog.
I havent done anything to but change plug wires clean the MAF sensor and pulled the throttle body and clean it. Every thing is stock. The engine was doing this long before I did this maintnance. I am leaning toward something electronic. It has never thrown a code and passes emissions every time. Any sugestions?