Quote Originally Posted by mscally07 View Post
Iv been having this same issue with my 2005 gtp. just bought new 10.3mm wires and new 104's for her but the car still starts weird sometimes. its starts up but drops to low rpm's then shoots up to normal idle speed. I dont know if its the fuel pump or injectors. What would cause it to do that. Also like sometimes the car will crank but not start. no clicking sound so it doesnt sound like anythings wrong with the starter. IDK IM STUMPED and it only has 101,000 miles on it ;/ any help pleaseeeeeeeeeeeeee.
After some more research on the issue, it seems that problem is with the Crank Position Sensor. about $30 +/- a few for the sensor. I havent fixed mine yet to confirm if thats what I was experiencing, but from everything ive read, thats what it is. the CPS.

You'll have to have a pully puller to get the crankshaft pully off, and I guess its right behind it.

Hopefully that helps!