O2 sensor problem.
How to:
1. Soak O2 sensor with a penetrant - PB Blaster for example.
2. Use a O2 sensor socket or a large box-wrench to remove old O2 sensor
3. Replace with new sensor.
If you have trouble getting the old one out, take it to a muffler shop - they'll be able to torch it out for you for a few bucks.
btw, it is called a catalytic converter.
1. Soak O2 sensor with a penetrant - PB Blaster for example.
2. Use a O2 sensor socket or a large box-wrench to remove old O2 sensor
3. Replace with new sensor.
If you have trouble getting the old one out, take it to a muffler shop - they'll be able to torch it out for you for a few bucks.
btw, it is called a catalytic converter.
Originally Posted by filipino_wise
What's up gang. I have a ?. is there a sticky on how to do it yourself replacing the 02 sensor by the cadillac converter. Or should i get a mechanic
Dear Sir,
Where can I find such a converter?
Sorry about this bump and thread jack, but since I can't start a thread of my own yet....
I just wanted to clarify a few things regarding O2 sensors. I've read through the FAQs and I can't seem to find the answers to my questions. First of all, my CEL code is telling me it's the left bank upstream O2 sensor - this may be a dumb question, but is the left bank the side facing the firewall, or vice versa? Also, is it a general rule of thumb to replace both sensors as a pair, or is it ok to just replace the faulty one only? My car's a '97 if that matters at all. Thanks guys.
I just wanted to clarify a few things regarding O2 sensors. I've read through the FAQs and I can't seem to find the answers to my questions. First of all, my CEL code is telling me it's the left bank upstream O2 sensor - this may be a dumb question, but is the left bank the side facing the firewall, or vice versa? Also, is it a general rule of thumb to replace both sensors as a pair, or is it ok to just replace the faulty one only? My car's a '97 if that matters at all. Thanks guys.
Left bank is the one closest to headlights. Stand at the driver's side of the engine bay and you are facing the same direction as the engine. 
o2 sensors go out at different times...it only makes sense to change them out as they go. They aren't hard to replace.
o2 sensors go out at different times...it only makes sense to change them out as they go. They aren't hard to replace.
Originally Posted by MrEous
Left bank is the one closest to headlights. Stand at the driver's side of the engine bay and you are facing the same direction as the engine. 
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Still easy to replace though.
haha, he said cadillac converter!! how hilarious!!
