Can someone please tell me what are the symptoms of 02 sensors starting to go bad? Thanks

 

why are you thinking this?

 

I dont know just noticed some funny things regarding my wideband and my narrowband voltages tonite on my way home. When cruising at a steady speed with basically very little throttle variation my wideband would start reading real rich ( anywhere from 11.0-13-5) it would do this for a couple seconds then go back to normal. Once it went lean then as soon as I eased into the throttle it went to normal ( Not from DFCO I was at like 20% throttle when it happened) I decided to verify by watching my narrowbands via the intercepter and it had the same trend. When the wideband would read rich the narrowband would hover in the 800's. I was not in PE either when any of this happend. However when In PE everything looks normal.

 

Anyone have any ideas? It did this once before like 1 month or so ago, only for one drive cycle. This eve. I drove about 50 miles to meet up with TIMZ and the whole way there everything was normal however on my way home It started acting funny......

 

Anyone????

 

i figure if the o2's are acting up you will be able to hear and feel your engine run poorly. though ive never heard this happen before and never monitored AFRs live so i assume a little variation is not normal?

 

well, i've been tripping rich codes for a long time. I only recently found out that my k&n coated my MAF with a thin layer of oil. I guess the maf thought it was flowing more air than it really was, and the fuel tried to match. don't know if this helps, but what the heck, check your maf. I cleaned mine with sensitive electronics cleaner. just a thought.

 

I already checked it, but non the less good idea. I havent got any codes and there are none in my history on HPTuners either.