So last week i threw a P0153 (PCM has determined that the response time for oxygen sensor 1 bank 2 was too slow during testing.) and a P1153 (Bank 2 control shifted lean). Thinking its the O2 sensor, i go and buy a new one and unhooked the battery to reset the computer.

It goes fine and everything is normal for a day and now im throwing a P1133 (HO2S Insuffiecent switching sensor 1/bank 1 . Fuel control shifting lean. [FAOSC]) Is this a fubar'd O2 sensor? Or is it something else?

^ This is all via Autozone's fabulous OBDII scan tool.

 

Speed Density?? hmm no more o2 codes

 

hey farmer, don't you have headers? slow switching can come from the headers not allowing the exhaust stream to get as hot as it used to. Sooo, your o2's are in a colder enviroment. (short explanation). The other codes are rare due to this, but are certainly capable of happening.

 

I have all kinds of problems with REAR o2's. Ususally heater related due to the headers I think. I finally just turned the MIL light off since its all rear sensor related. I upgraded to the vette o2's at some point. Larger heater. It helped with the drivers bank but not the passenger.

 

Speed density has absolutly nothing with codes http://www.hptuners.com/forum/showthread.php?t=8994

as for your code issues it looks to be issues iwth just the rear ones...I would just have your tuner delete the codes & be done with it.

 

i meant..go speed density so he can turn the front o2's off and not have to worry about them

 

speed density is still a closed loop fuel system.....still need the front O2's.

 

mine are turned off and disconnected..i run a constant 15.6 a/f at cruise and 12.8 wot..

 

I should say it does work, however just not necessary IMO. It sounds like you have your VE tuned pretty much dead on, some people may not have your tuning ability.

 

AutoTune Via EFI Live..works great and does wonders..lol..once you know how to set it up..i think its the easiest way to tune your VE and A/F