MAP bad?
#12
While K&N attempts to refute that their filters and oiled cotton gauze fitlers in general can leech micro mist of oil into the intake air stream and thus coat the MAF thermistors, the situation described appears to indicate that it can and does happen.
#13
Sounds to me like there is a lot more to this story than being said here.
#14
Lee, I've been away for a bit and saw your earlier post, but want to offer up some info that may help....
DTC's begin with a letter that indicates where the trouble may be. "C" is chassis or wiring, "B" is BCM and "P" is powertrain or ECM or TCM issues.
C0292: No "top secret" here and I won't have to shoot anyone, but that indicates an issue with "lost communication with the ECM".
C0561/71 is confusing, but indicates problems with ABS, TCS, BCM software and system disabled.
P0106 indicates MAP (BARO pressure) circuit performance issues.
With you having indicated all the above DTC's, the first thing I would look at is on the driver side of the valve cover. There is a small black valve there, which is the EVAP purge valve. It is mounted on top of a black bracket. The main engine wiring harness is mounted to that. Look for any damage from rubbing, which could cause a possoble short. I know I saw a TSB related to that and multiple issues in the past, but cannot put a finger on it right now.
Also, your constant reference to "burn outs" (worthless without pics of your car, barely visible in the smoke!) could likely trigger the ECM / TCM into "abuse mode", where the parameters really kick in if exceeded.
Finally, forget the "increased airflow" from the CGS intake! None of the DTC's indicate anything to do with the MAF (mass airflow sensor). Actually, with the CGS, with the higher underhood air temps, the actual air mass would be less, not more, due to the lower air density. Sorry about that.
Anyway, check that wiring harness. I also thought about your earler accident and wonder if a VSS sensor or wiring issue from that may not be having an effect.
Hope that helps and good luck!
DTC's begin with a letter that indicates where the trouble may be. "C" is chassis or wiring, "B" is BCM and "P" is powertrain or ECM or TCM issues.
C0292: No "top secret" here and I won't have to shoot anyone, but that indicates an issue with "lost communication with the ECM".
C0561/71 is confusing, but indicates problems with ABS, TCS, BCM software and system disabled.
P0106 indicates MAP (BARO pressure) circuit performance issues.
With you having indicated all the above DTC's, the first thing I would look at is on the driver side of the valve cover. There is a small black valve there, which is the EVAP purge valve. It is mounted on top of a black bracket. The main engine wiring harness is mounted to that. Look for any damage from rubbing, which could cause a possoble short. I know I saw a TSB related to that and multiple issues in the past, but cannot put a finger on it right now.
Also, your constant reference to "burn outs" (worthless without pics of your car, barely visible in the smoke!) could likely trigger the ECM / TCM into "abuse mode", where the parameters really kick in if exceeded.
Finally, forget the "increased airflow" from the CGS intake! None of the DTC's indicate anything to do with the MAF (mass airflow sensor). Actually, with the CGS, with the higher underhood air temps, the actual air mass would be less, not more, due to the lower air density. Sorry about that.
Anyway, check that wiring harness. I also thought about your earler accident and wonder if a VSS sensor or wiring issue from that may not be having an effect.
Hope that helps and good luck!
#15
Thanks for the info, Joe. Anytime I used to do burnouts, I would get the standard light that says something about low traction-but never the T/C idiot light. I found it hard to believe that the MAF would trigger this kind of problem-it was my Chevy dealer that said it. Matt from Tune Time said that there is more than enough airflow allowance for even the supercharged engines, and my car had way under that threshold. When he hooked up my car to his laptop, it showed all of the readings. And the MAP was not showing anything which led him to believe it may be the cause of my problem. They checked the harness for power and ground and both were ok, which pointed to a bad MAP sensor. Then, for the brief time I tried the one that he had at his shop, my car ran ok without throwing any codes. But, as with any electronic intermittant problem, it does not prove anything for certain. If the MAP was only a few bucks, I would throw a new one in. But at almost 100 big ones, I want to be sure that it will fix the problem. So I will try anything else first. On the drive home, with my MAP sensor back in the car, it did go into T/C trouble mode once. And it happened without any burnouts-actually the light came on while the car was stopped in a traffic jam waiting to pay a toll at the Lincoln tunnel. So much for the airflow theory. I find it hard to believe that a dirty filter could cause this problem, especially since I have already cleaned the MAF sensor with no success, but I will try cleaning it tomorrow. (I already tried the original K&N that came with the CGS intake and threw a T/C code immediatly after putting it on, as well as a 'Service Engine Soon' light.) A bad connection or wiring harness would make the most sense, so I will also check the wiring.