hello i have a 2006 grand prix gt bought about 9 months ago tuned it three times full boltones e85 ran a 13.3 2 weeks later i take it bake to the track and it ran like ****
i got maf code or map
replaced both and the car did the same time
it misfires in high rpm
i get a blinking cel
my history of codes since the problem
p0171
p0107
u0107 ???
p0306
p0116
i am guilty of pouring water on the motor to cool it down before a race a couple of times people say that could of shorted it out
but hurrs my expierence
my fuel pressure drops from 60 to 58 ok i know that bad but i dont think that is enough to mess me up so bad
i am starting to belive its the wiring harness or the ecu
HURR THE WIERD PART!!!
ok so i conect a scan tool up to the computer at idle
it says 1.61 to 2.08 somthing/m
and the caclated load is 49 % with ac at idle
i have swapped 3! yes 3 maf sensors and the all have the same reading
i step the gas in park and the calc idle drops to 34% to 29%
ok so i test the 5 volt referecne wire that connects to the ecu
it 5.003 volts with the car off with the key forward i plug the maf and it drops to 2.5 i go to 3000 rpms in park and the voltagle fulcuates be tween 2.4 and 2.6 should it go up????
yes all three mafs have the same reading
the car can feel great ill get up and go fast!
the i turn it off and it will runn like a old tired dogg
i bought the pcm from zzp about 7 months ago
please help me i am so stumped!!!!
Originally Posted by Hawkins04
