O2s not switching at idle
04-07-2006, 08:11 PM
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O2s not switching at idle I just noticed that at idle my O2s seem to hang at around 900, or so. I've made changes to the various idle tables, but nothing seems to help.
When I start the car the O2s swing pretty much normal for about 1.5 minutes after that they flat line at ~900. While driving they switch fine...suggestions?
BTW, I did testing with the engine warmed up and in Closed Loop.
When I start the car the O2s swing pretty much normal for about 1.5 minutes after that they flat line at ~900. While driving they switch fine...suggestions?
BTW, I did testing with the engine warmed up and in Closed Loop.
04-08-2006, 08:17 PM
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Here's a pic of what I'm talking about. Once the engine is hot it takes about 1 min and 40 seconds for the AFRs to go to hell 
Kinda hard to read, but on pane 3, the blue is commanded AFR and green is WB AFR. Below that on the next pane are my front O2s.
Kinda hard to read, but on pane 3, the blue is commanded AFR and green is WB AFR. Below that on the next pane are my front O2s. 
04-08-2006, 09:50 PM
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Originally Posted by foff667
are you sure your in closed loop when the **** goes bad?
I increased the base adder for the affected airflow cells, and rescaled the IFR table. The O2s swing now, but they look like a darn mountain range, instead of gently rolling hills...
