Any ideas on where to look next? Bucking, Stalling
May 26, 2012, 10:16 PM
#16
i see u threw the throttle position sensor code, thats what i was going to say to check its either not plugged in all the way or is going bad. when i had my plug lose i could just barely hit the pedal and it be fine (but would take forever to get up to speed haha) or if i went full throttle it be fine, but would buck like crazy inbetween. then i just happen to push on the plug and it snapped back in and the issue went away and never came back
May 27, 2012, 02:41 PM
#21
ok, so I just swapped out a tps sensor with a buddy. Still doing it. It seems like it only does after the car has cooled down and within the first 10min of driving or so. It seems like after that, I could drive it around all day with no issues.
Anybody have any other suggestions?
Anybody have any other suggestions?
May 27, 2012, 03:08 PM
#23
I have a spoolinup COP thats not that old. I was gonna swap with my buddy, be he has an 8 and the plate that mounts to the valve cover doesnt work with the mivec valve cover. I have checked my plugs, I inspected the coils, they look fine. I have bought a new exhaust cam position sensor, swapped out a tps sensor, since it stores a code for that. Still nothing. I am at my whits end with this damn thing. INjectors cant be more than 4 months old. I know its a possibility, but I cant see them going out just at random.
May 27, 2012, 05:11 PM
#24
I guess the next thing I might try is swapping out the primary pump on my double pumper with my old walbro 255. Maybe the primary pump is on its way out already?? Its only 2 months old though. 
So things I have replaced, swapped out or checked:
Checked plugs, look clean and dry
Swapped tps sensor with known working one, no change
Bought new cam position sensor for exhaust cam, no change(havnt done mivec cam as its a order only part.)
Boost leak test, no leaks
Inspected COP, everything looks fine
I am sort of expecting maybe a crank angle sensor now too. I just hate to go buying new sensors without any changes.
So things I have replaced, swapped out or checked:
Checked plugs, look clean and dry
Swapped tps sensor with known working one, no change
Bought new cam position sensor for exhaust cam, no change(havnt done mivec cam as its a order only part.)
Boost leak test, no leaks
Inspected COP, everything looks fine
I am sort of expecting maybe a crank angle sensor now too. I just hate to go buying new sensors without any changes.
May 27, 2012, 06:54 PM
#27
no, I have never really heard much noise from the fuel pump on this car. Not when I had my single 255, or the double pumper now.
What gets me frustrated is I cant replicate the problem at all. It just happens randomly within the 1st 10 min of driving after its sat and fully cooled down. Then it doesnt seem to have any troubles. I can beat the snot out of the car and it wont make a single glitch.
What worries me about driving it, is I am worried one of the times it cuts out, its gonna die as it has done twice and I wont be able to start it again this time.
What gets me frustrated is I cant replicate the problem at all. It just happens randomly within the 1st 10 min of driving after its sat and fully cooled down. Then it doesnt seem to have any troubles. I can beat the snot out of the car and it wont make a single glitch.
What worries me about driving it, is I am worried one of the times it cuts out, its gonna die as it has done twice and I wont be able to start it again this time.
