Lean O2 code with BLM 122 at idle
08-02-2011, 10:30 PM
#1
Advanced
Thread Starter
Member Since: Aug 2003
Location: Nowthen MN
Posts: 82
Likes: 0
Received 0 Likes
on
0 Posts
Lean O2 code with BLM 122 at idle
What would cause this issue? O2 voltage swings between 220 and 840 mv at idle and BLM is steady at 122. I still get error code 44.
Should I add more timing? It's at about 20* total at idle.
Thanks,
-J
Should I add more timing? It's at about 20* total at idle.
Thanks,
-J
08-03-2011, 12:04 AM
#3
Team Owner
Member Since: Sep 2001
Location: Athens AL
Posts: 59,654
Received 1,401 Likes
on
1,017 Posts
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
I'd hesitate to recommend it needs timing at idle without seeing the other operating conditions and where the timing is set, but it could probably take a little more.
122 is rich though. Did you go through the manual procedure for checking the 44?
122 is rich though. Did you go through the manual procedure for checking the 44?
08-03-2011, 12:21 AM
#4
Burning Brakes
I'm with JackDidley. It doesn't sounds like idle is what is tripping your error code. That seems to be somewhere else.
If you clear it, does it come back while idling?
If you clear it, does it come back while idling?
08-03-2011, 09:21 AM
#5
Advanced
Thread Starter
Member Since: Aug 2003
Location: Nowthen MN
Posts: 82
Likes: 0
Received 0 Likes
on
0 Posts
The car is just sitting still idling no load. It gets code 44 after idling for about 3 minutes or more in closed loop.
I was thinking that maybe there is too much oscillation and there might be a way to dampen it?
-J
I was thinking that maybe there is too much oscillation and there might be a way to dampen it?
-J
08-03-2011, 09:54 AM
#6
Burning Brakes
Oscillating is what a narrowband sensor is supposed to do. It is when it isn't oscillating you typically have a problem.
Do you have any form of data log?
Do you have any form of data log?
