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P0133 o2 sensor slow response?

suitercrew

suitercrew

New member
Just pulled this pending code curious what it might be if uts a common code for our cars. I would assume it could be a bad o2 sensor or maybe exaust leak??

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I also was just watching my stft and ltft they lock in at -2 at wot and are within 5% just driving around but at idle my ltfts are -10 to -15!! Wow!?

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Well im going to check for an exaust leak and if i have a leaky injector before i go spending money on a new sensor i would assume its the original sensor since i got the car with 90k on it now has 104k

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I guess i better get on it then i had it tuned on 16* timing with no kr and now im seeing anywhere for 1-3.5 throught wot

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Its just weird cause my fuel trims are pretty on point driving and at wot but at idle there all f*ckerd up

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the o2 is a "trusted" sensor. the pcm automatically assumes its fine and that ~450mv is stoichiometric AFR. problem is that over time it "skews" and no longer reads correctly, so the pcm supplies incorrect amounts of fuel.

really they should be changed about every 50k or so. do not use bosch, use denso/ngk/Delphi sensors only
 


if you got a code for it and your trims are messed up now, change it. this is a no brainer really. and if they are over 50,000 miles old, they should be changed anyways.
 
I figured as much. Thanks guys hopefully it fixes it. Ill make sure to look for an exaust leak while im down there too. I still have the original flex on my sd headers

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Holy **** i ran a scan driving home on my lunch break and whenever i give part throttle loke 15-30% my fuel trims are hitting -20 if not more and im getting spokes 3-4* of kr when im not even in boost what the heck? Im running so rich its causing kr

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Im curious about how you tellvif an ect sensor is bad as well cause torque pro is saying my temp is 190 but the gauge on the dash is just a hair above 160 i dont know if that means anything?

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Ok i figured it didnt mean anything. But ok thanks guys ill try to get that o2sensor replaced today or tomorow and let you guys know what happens

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