O2 Sensors and Lean Banks SES
#1
On The Tree
Thread Starter
iTrader: (8)
Join Date: Oct 2003
Location: Chicago
Posts: 169
Likes: 0
Received 0 Likes
on
0 Posts
O2 Sensors and Lean Banks SES
I am having quite a bit of trouble recently. First off, for the last couple months I had P0131 and P0151 codes for low voltage o2 sensors that popped up a few times when I had been driving the car for a long period of time during a hot summer day. Well this past weekend I took a trip to Minneapolis and it kept popping back up soon after I erased the code. Well then on the way back home I also had code P0171 for lean bank 1 so I deleted that. Then P0131, P0151, P0171 and P0174 all popped up. I didn't have time to do anything about it so yesterday on the way to work I only got the P0171 and P0174 codes. This hole time I had the codes my car would idle rough sitting at a light.
So I did some research on here and found that if both of those codes are current then it could be that there is a vacuum leak, MAF problem, or fuel issue. Tonight I cleaned my MAF with CRC and found that the rubber piece from my PCV to the manifold had a hole. I replaced it with a piece of hose I had laying around but it was a really tight fit. I took it for a spin and got some gas and I can't press down the gas pedal lightly and to get it going I have to basically launch from 2K! Then on the way back I got P0131 and P0171 codes again..... ****! On the bright side, my idle seems better. But now I will be peeling off at every intersection AND still have an SES light. The lean banks worry me. BTW I had Bosch 13111's put on this spring with my LTs. Should I replace these? What else can this be???
So I did some research on here and found that if both of those codes are current then it could be that there is a vacuum leak, MAF problem, or fuel issue. Tonight I cleaned my MAF with CRC and found that the rubber piece from my PCV to the manifold had a hole. I replaced it with a piece of hose I had laying around but it was a really tight fit. I took it for a spin and got some gas and I can't press down the gas pedal lightly and to get it going I have to basically launch from 2K! Then on the way back I got P0131 and P0171 codes again..... ****! On the bright side, my idle seems better. But now I will be peeling off at every intersection AND still have an SES light. The lean banks worry me. BTW I had Bosch 13111's put on this spring with my LTs. Should I replace these? What else can this be???
#5
On The Tree
Thread Starter
iTrader: (8)
Join Date: Oct 2003
Location: Chicago
Posts: 169
Likes: 0
Received 0 Likes
on
0 Posts
Well the fix of the PCV hose helped a lot, no more issues with a shitty idle or the stiff gas pedal as well. I also had a buddy with HPTuners check it out and it looks like the bank 1 O2 sensor is junk so I will get that replaced next week and report back. It is running a little rich on bank 1 so I don't have any more worries. Also, no more codes in the past couple days. I am guessing that the drivers side O2 sensor has been crappy for a while and this vaccuum leak just set it over the edge. Thanks for the help!