BlueCollarDaily
Well-Known Member
- Thread starter
- #1
Hey guys!
Ive been tracking down P0300,P3016,P0303,7,8 codes.
Been thru checking and changing plugs/gapping, coil swaps, checked ohms on injectors. Log seems to show port duty cycle is fine on 13 psi...fuel pressures seem normal with a BAP....Lamda both banks fine. STFT and LTFT usually under 3% even when stumbling at idle and off idle..
However it does "lock up" there are times it stumbles say at idle and it flatlines in real time...spark with lock and so will STFT...say bank 2 goes a bit lean then it stumbles and all closed loop adjustments including spark just lock up and when they unfreeze, adjust and it tries to idle better..
Also one time I noted on a log at part throttle the spark struck at 35 degrees like you drew the line with a ruler during one of these freezes. It also starts at times with like 16k degrees timing for a bit, maybe just noticing this because I'm just now logging start cycles....
From idle to approximately 2700rpm I get misfire counts, idle to worst at 1450rpm...around 2700 cleans up all the way to 7300 and 13psi....
Seemingly exhausting all normal avenues so it's time to look at mechanical and my question is when the code P0303 drops, that's not cylinder #3 but the 3rd in the firing order correct?
So p0303 is #4, 07 is 7, and 08 is #2 cylinder correct? Car has 4k miles on it 19 GT Premium, I assumed coil packs wouldnt go bad but we did do some swapping around just in case.
Planned to use #5 as a control( plus plug was pristine and is easy to get to hehe), then leakdown whichever P0303 and P0307 cylinders actually are.
Thanks sorry for the Newb question.....Had my car since November put the first 1300k on it getting it home and December just want to drive it and enjoy it a bit before I have some surgeries, no guaranty I'm gonna get my license back after them....
Thanks
Ive been tracking down P0300,P3016,P0303,7,8 codes.
Been thru checking and changing plugs/gapping, coil swaps, checked ohms on injectors. Log seems to show port duty cycle is fine on 13 psi...fuel pressures seem normal with a BAP....Lamda both banks fine. STFT and LTFT usually under 3% even when stumbling at idle and off idle..
However it does "lock up" there are times it stumbles say at idle and it flatlines in real time...spark with lock and so will STFT...say bank 2 goes a bit lean then it stumbles and all closed loop adjustments including spark just lock up and when they unfreeze, adjust and it tries to idle better..
Also one time I noted on a log at part throttle the spark struck at 35 degrees like you drew the line with a ruler during one of these freezes. It also starts at times with like 16k degrees timing for a bit, maybe just noticing this because I'm just now logging start cycles....
From idle to approximately 2700rpm I get misfire counts, idle to worst at 1450rpm...around 2700 cleans up all the way to 7300 and 13psi....
Seemingly exhausting all normal avenues so it's time to look at mechanical and my question is when the code P0303 drops, that's not cylinder #3 but the 3rd in the firing order correct?
So p0303 is #4, 07 is 7, and 08 is #2 cylinder correct? Car has 4k miles on it 19 GT Premium, I assumed coil packs wouldnt go bad but we did do some swapping around just in case.
Planned to use #5 as a control( plus plug was pristine and is easy to get to hehe), then leakdown whichever P0303 and P0307 cylinders actually are.
Thanks sorry for the Newb question.....Had my car since November put the first 1300k on it getting it home and December just want to drive it and enjoy it a bit before I have some surgeries, no guaranty I'm gonna get my license back after them....
Thanks
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