Normal looking or problem? O2 SENSOR
- Thread starter OSO
- Start date
All of the above........I have ran 110 leaded in my truck several times w/o problem but I have a friend that put it in his 2006 Corvette on the way to the track. His O2 sensors went bad within a few miles..
Sharpimage
Full Access Member
your sensors don't look bad at all.. Mine have more carbon on them but
that's just because of the catless system.. Are you running cats with
leaded fuel?
that's just because of the catless system.. Are you running cats with
leaded fuel?
OSO
Full Access Member
Fuel is whatr im worried about i just filled my 55 gal drumTNVIPER said:
Yep, High flow. Started using the fuel because timing was to far advanced when i tune went to hell now i just like the smellSharpimage said:
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Fahrenheit
Full Access Member
Mine didnt look THAT bad when I changed out to cat-less mids.....?????
Fahrenheit
Full Access Member
Oh Im gonna have to get some from you to mix next friday....If you still have some
OSO
Full Access Member
Got 50 gallons leftFahrenheit said:
The leaded gas will kill cats fast.......how do you know the O2 sensors are bad?
OSO
Full Access Member
Replaced them and my air fuel problem at idle corrected itself. Truck was idling at 12.9-11.5 no matter what we did to the tune.TNVIPER said:
OSO said:
Yep..that would definitely be a sign of bad O2s....
OSO
Full Access Member
What got me is that it never gave any codes that they were bad:dontknow:TNVIPER said:
OSO said:
Problem was the sensor still worked...but was sending bad data to the PCM...this probably caused the PCM to think all was well with the A/F...
OSO
Full Access Member
Thats the only thing i could figure. What really sucks is i ran better at the track with the bad O2s and bad tune:slug:TNVIPER said:
maybe it was working on the high rpm side when no dought you had your big foot smashing through the floor board ,,, but at low rpm the signal was tanted because of build up from the race gas:dontknow: just a thought and we need to find out were big ike (Jay) is moving to and we all go over there and do dounuts in his front yard then run like hell !!if nothing else we toilet paper all his trees right before it rains again!!!!!! well its night night time for big boy peace out bro
and we need to find out were big ike (Jay) is moving to and we all go over there and do dounuts in his front yard then run like hell !!if nothing else we toilet paper all his trees right before it rains again!!!!!! well its night night time for big boy peace out bro
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RedSrt007
Active Member
I have never been one to see if the O2 "looks bad" the only way I know is to check voltages -to-fuel, and match them up. check your voltage @ decel, and that should be a good sign. its a wide band, so dont forget your 0-5v.
I definitely wouldn't base it off looks.
I definitely wouldn't base it off looks.
OSO
Full Access Member
I know you cant really tell if they are bad with a visual but was wondering if this is what they look like under normal use but i guessing not.
Probably should replace the cats also, guessing they are not flowing as well as they once did.
Probably should replace the cats also, guessing they are not flowing as well as they once did.
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