AFR Goes lean ..... Sometimes
12-31-2007, 09:27 PM
#1
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AFR Goes lean ..... Sometimes I need some help.....
During the last ten days my car is running perfect AFR one day and the next it is extreamly lean. The tune is not being changed. I have a WB. When it is lean (over 14.0 it is pinging) so I believe the WB is accurate and something is allowing air in .... but not every day. I have cleaned the MAF and turned the airpump off. I also put the car in SD to confirm its not the MAF signal.
Would someone like to offer some possibilities and how to check for them.
Thanks,
DH
During the last ten days my car is running perfect AFR one day and the next it is extreamly lean. The tune is not being changed. I have a WB. When it is lean (over 14.0 it is pinging) so I believe the WB is accurate and something is allowing air in .... but not every day. I have cleaned the MAF and turned the airpump off. I also put the car in SD to confirm its not the MAF signal.
Would someone like to offer some possibilities and how to check for them.
Thanks,
DH
01-01-2008, 02:02 AM
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Here's links for tune and good, bad logs.
http://www.hptuners.com/forum/attach...5&d=1199174263
http://www.hptuners.com/forum/attach...6&d=1199174418
http://www.hptuners.com/forum/attach...7&d=1199174495
DH
http://www.hptuners.com/forum/attach...5&d=1199174263
http://www.hptuners.com/forum/attach...6&d=1199174418
http://www.hptuners.com/forum/attach...7&d=1199174495
DH
