car wont start, cranks, but wont turn over
car wont start, cranks, but wont turn over
started out with a misfire, i thought. but now ive ruled that out, ive replaced plugs wires coils and ignition module, still didnt turn over. so i did what a few suggested and replaced my crank pos sensor, which i didnt think was all that hard. put it back together....nothing. so i was suggested to change the cam pos sensor (behind the water pump pulley) had it all back together... still nothing. its not my fuel system, well at least not my pump or filter, the pump primes and there is gas going to my fuel rails. i dont thinks its injectors because what are the odds of all my injectors being bad at once. i could be wrong the wouldnt be the first time. so i thought maybe it could be my maf sensor so i went to pull it out to clean it and snapped part of it off, so if i didnt need one before i def do now. i read on another thread that when you change out sensors to disconnect the battery to let the pcm reset? idk it was worth a shot. does anyone know what else i should check?
Monte Of The Month -- August 2012
Joined: Apr 2011
Posts: 6,074
From: Seattle
Have you checked your fuses? On the driver side fuse panel there is a fuse marked PCM/BCM/CLSTR and another marked PCM (CRANK). I'd check the PCM/(CRANK) fuse for starters and go from there.
could of been the fuel pressure regulator, it will prime the fuel rails but the regulator is suspose to maintain that pressure, if its faulty the fuel will leave the rails and injectors and go back to the fuel tank, i think you should test your fuel pressure to be sure
Check the ground underneath the ICM bracket. Have you actually tested the fuel pressure? Made sure the firing order is right?
Oh, and unplug the MAF, TPS, and IAC individually and see if it'll start.
Oh, and unplug the MAF, TPS, and IAC individually and see if it'll start.
when i check my fuel pressure what should it be at for a n/a 3800
i checked the fuel pressure and it was 45 psi and did not move. im running out of things to check.
Did you make sure the harness going to the crank sensor was in decent shape? I've seen those things get chewed up or burnt before. I've also seen crank sensors be bad out of the box...