I have been getting ready to change the oil in the 2012 335i (F30). The filters are on order and today I put in the PEA cleaner (Gumout Regane) and filled up with gas at Kroger(13 Gal) on the way home from work. Leaving the lot, I laid into the throttle once in the lane of traffic to give it a little work out 5-50mph... Along the way it suddenly seemed to free spool and then cut back to moderate RPMs. This happened to be at 45. It could have been me reacting to the strange noise and lifting off or the computer cutting the gas. I took it easy for a few (green)lights while pondering it and cruising sedately. I then saw that people had stopped short while I was thinking, so I tested the ABS. It worked, but not on the two dozen eggs I was carrying. After righting the egg containers in a side lot, I got back on the road. About 2 minutes later a message declaring a "drivetrain malfunction-call the dealer and drive sedately" came up. I drove home and cycled the power on the car. The fun parts of the drive were
After restart, the warning (!) went away and the CEL came up. It had seemed to be a little jerky on the way home and now idle was rough - auto start stop no longer possible on startup per computer or even keeping it running perhaps... low idle not feasible, but high idle fine...Measuring oil level executed fine. Still full. Air filter seemed to be in place. Possible that one edge was not fully clamped, but no marks to speak of and filter dirty but not obscene. Pulling filter made me remember that Model Change had resulted in wrong air filter coming last year from Amazon/Rock Auto, so I had left it in. Production date was 02/11/11. Perhaps it had passed the sniff test since new. It honestly didn't look dirty besides some darkening with something like brake dust in color.
I called the dealer and they mentioned 2 hours to diagnose. I mulled it over and decided that 2 dealer hours would buy a lot of other things, so I drove to Autozone. Codes thrown by basic reader were P00BD and P00BC - Air Flow reading too high(D) and too low (C). I am now digging around for the best OBD2 device for the BMW that I can continue to use as a car monitor to watch things like fuel economy and all the other outputs. I tried to use MAF cleaner but the symptoms persist. Luckily, I haven't put the truck up for sale, so the family has an emergency car to drive if needed and I will use the other car to go to work as needed until this is sorted.
What could be the issues? I know that monitoring it real time will let us know if more codes are being thrown. What is likelihood that accelerating at 85% throttle and then braking at 90% would take something down like the MAF? Any tidbits of wisdom? I will search the BMW forums and here shortly, I just wanted to throw this out there first.
After restart, the warning (!) went away and the CEL came up. It had seemed to be a little jerky on the way home and now idle was rough - auto start stop no longer possible on startup per computer or even keeping it running perhaps... low idle not feasible, but high idle fine...Measuring oil level executed fine. Still full. Air filter seemed to be in place. Possible that one edge was not fully clamped, but no marks to speak of and filter dirty but not obscene. Pulling filter made me remember that Model Change had resulted in wrong air filter coming last year from Amazon/Rock Auto, so I had left it in. Production date was 02/11/11. Perhaps it had passed the sniff test since new. It honestly didn't look dirty besides some darkening with something like brake dust in color.
I called the dealer and they mentioned 2 hours to diagnose. I mulled it over and decided that 2 dealer hours would buy a lot of other things, so I drove to Autozone. Codes thrown by basic reader were P00BD and P00BC - Air Flow reading too high(D) and too low (C). I am now digging around for the best OBD2 device for the BMW that I can continue to use as a car monitor to watch things like fuel economy and all the other outputs. I tried to use MAF cleaner but the symptoms persist. Luckily, I haven't put the truck up for sale, so the family has an emergency car to drive if needed and I will use the other car to go to work as needed until this is sorted.
What could be the issues? I know that monitoring it real time will let us know if more codes are being thrown. What is likelihood that accelerating at 85% throttle and then braking at 90% would take something down like the MAF? Any tidbits of wisdom? I will search the BMW forums and here shortly, I just wanted to throw this out there first.
