Ive looked through the forums about the condition ive got,and ive boiled it down to cam position sensors. Can anybody confirm? My GXP will not idle steady. At idle, it seems the engine wants to stall,and then it revs up,settles in,snd does it all over again. No cel,gas is good,and ive checked all intake connections. MAF is a year old OEM. Standard paper intake filter.