Hi all

my friend have a 2002 sunfire 2200 sfi

it's started to have problem to accelerate, now his sunfire won't start, if i unplug the temps sensor, the car rev to 4500 rpm, when we plug the sensor, the car die, sometime it run 4 cylinders, or run 2 cylinder

so we try 2 new coolant sensor, same problem,

tryed 2 coil pack too, same problem

tryed 2 pcm, same problem

when the car rev to 4500 rpm, if you touch the gaz pedal, the car die

when the car start to be hot, the rev come down to 1000 rpm

no check engine

please if you can help me in that trouble, i will be so happy (and my friend too)

PS : Sorry for my english, I usually speak Canadian French

my friend have a header, and a Cold Air Intake, if it can be helpful !

IM thinking the o2 sensor. but im not a professional