vivalavolvo Posted November 19, 2012 Report Share Posted November 19, 2012 Alright, No idea what happened but i was running my stock ECU trying to track down issues that may be lead back to my MAF. Cruising down the highway my CEL came one. A lot of the DTCs either don't exist or don't belong to my car. Did my ECU flip a poo or is my scanner being a goof? P0141 O2 sensor heater (known issue) P0137 O2 sensor low voltage (known) P0F0F P0606 could only find issues with toyota's and PCM faults when searching P0505 Idle Control System (my idle has been goofy, maybe be related to bad MAF tho) U2B03 P0E0E P0B0B P0A0A P0C0C P3036 P1C93 P0D0D P0707 TRANS RANG SENSOR LOW P0303 CYL 3 MISFIRE P1398 (bad VVT signal, does not exist on my car) P0909 P1A1A P1101 P0384 So i'm thinking either bad ECM or dirty ECM connector? Link to comment Share on other sites More sharing options...
flyfishing3 Posted November 19, 2012 Report Share Posted November 19, 2012 can you clear it and start over, there's to much there other than a freak out. Link to comment Share on other sites More sharing options...
vivalavolvo Posted November 19, 2012 Author Report Share Posted November 19, 2012 can you clear it and start over, there's to much there other than a freak out. I cleared it and drove a few miles, so far so good. I was getting concerned that the CEL didn't come on for the o2 sensor after putting that ECU back in. It normally came up after 10 or so miles of driving, but i was 150+ with no CEL, then this land slide of DTCs came in. Car runs fine other then silly idle and overboost/miss (may be MAF) that started after the weather got super cold. And all my hoses are new and TCV as well. Link to comment Share on other sites More sharing options...
flyfishing3 Posted November 19, 2012 Report Share Posted November 19, 2012 have tried idling the car with the MAF disco? it will throw a light but see if it smooth's things out. Link to comment Share on other sites More sharing options...
vivalavolvo Posted November 19, 2012 Author Report Share Posted November 19, 2012 have tried idling the car with the MAF disco? it will throw a light but see if it smooth's things out. I have. It's no so much a bad idle, it kinda has a hard time finding it. Example, come to a stop, idle drops to 700 RPM before settling at 950 RPM. I'm not excluding the IAC, but i have other issues tied to the MAF so i was going to start there. Link to comment Share on other sites More sharing options...
flyfishing3 Posted November 19, 2012 Report Share Posted November 19, 2012 hows your battery? these cars act nutty when battery is going. with temps dropping, might be a heavy draw Link to comment Share on other sites More sharing options...
vivalavolvo Posted November 19, 2012 Author Report Share Posted November 19, 2012 hows your battery? these cars act nutty when battery is going. with temps dropping, might be a heavy draw Only a couple weeks old. Link to comment Share on other sites More sharing options...
nari Posted November 20, 2012 Report Share Posted November 20, 2012 I had "similar" situation, but with less dtcs... got a CEL for injector signal 1, car wouldn't idle with the IAC plugged in, AFRs all over the place, MAF fixed it... So, my bet is on the MAF. Link to comment Share on other sites More sharing options...
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