Fueling Issues

bv1 · 08-11-2015, 07:52 PM

Hoping I could get some insight into the issues I'm having. I keep getting the 29DC code and have noticed my HPFP pressures look crazy and probably not normal. The log isn't full open throttle just because I don't want to push things at this point.

I just replaced the hpfp prior to this log as I thought that was the issue obviously not. The logs are identical to the old pump.

Any idea on what the issue may be? Has anyone experienced this? LPFP? LPFP Sensor? Trying to not go on a parts buying spree.

29DC is the only code I'm getting. The downside being sometimes this code is difficult to diagnose.

The car is 07 335i full bolt on Cobb stg2+ off the shelf fuel is 94 octane.

http://datazap.me/u/bv1/log-14391607...15-16-17-18-19

msjt · 08-12-2015, 05:37 PM

When I had 29dc it was the injectors.

bv1 · 08-13-2015, 09:42 PM

Man...I hope not for me. Still working through diagnosing the issue.

bv1 · 08-14-2015, 09:13 PM

Added a log with trims ST and LT. Anything abnormal with the trims?

Has anyone ever heard of a high pressure fuel sensor out of spec on this platform?

All seems good until 3000ish rpm and then the high pressure system starts going wacky.

http://datazap.me/u/bv1/log-14396022...13-14-15-16-19

08-11-2015, 07:52 PM	#1
bv1 Private First Class 6 Rep 169 Posts Drives: 335i Coupe AT Join Date: Jan 2011 Location: Toronto iTrader: (0)	Fueling Issues Hoping I could get some insight into the issues I'm having. I keep getting the 29DC code and have noticed my HPFP pressures look crazy and probably not normal. The log isn't full open throttle just because I don't want to push things at this point. I just replaced the hpfp prior to this log as I thought that was the issue obviously not. The logs are identical to the old pump. Any idea on what the issue may be? Has anyone experienced this? LPFP? LPFP Sensor? Trying to not go on a parts buying spree. 29DC is the only code I'm getting. The downside being sometimes this code is difficult to diagnose. The car is 07 335i full bolt on Cobb stg2+ off the shelf fuel is 94 octane. http://datazap.me/u/bv1/log-14391607...15-16-17-18-19 Attached Images __________________ \|Cobb AP / JB4 \| DCI \| BMS WW Meth Kit \| AMS FMIC \| Macht Schnell 3" DP \|
	Appreciate 0 Tweet Quote

08-12-2015, 05:37 PM	#2
msjt First Lieutenant 160 Rep 305 Posts Drives: e92 335i Join Date: Jan 2013 Location: queens, nyc iTrader: (0)	When I had 29dc it was the injectors.
	Appreciate 0 Quote

08-13-2015, 09:42 PM	#3
bv1 Private First Class 6 Rep 169 Posts Drives: 335i Coupe AT Join Date: Jan 2011 Location: Toronto iTrader: (0)	Man...I hope not for me. Still working through diagnosing the issue. __________________ \|Cobb AP / JB4 \| DCI \| BMS WW Meth Kit \| AMS FMIC \| Macht Schnell 3" DP \|
	Appreciate 0 Quote

08-14-2015, 09:13 PM	#4
bv1 Private First Class 6 Rep 169 Posts Drives: 335i Coupe AT Join Date: Jan 2011 Location: Toronto iTrader: (0)	Added a log with trims ST and LT. Anything abnormal with the trims? Has anyone ever heard of a high pressure fuel sensor out of spec on this platform? All seems good until 3000ish rpm and then the high pressure system starts going wacky. http://datazap.me/u/bv1/log-14396022...13-14-15-16-19 Attached Images __________________ \|Cobb AP / JB4 \| DCI \| BMS WW Meth Kit \| AMS FMIC \| Macht Schnell 3" DP \|
	Appreciate 0 Quote