 Downstream O2 sensor, where to install it? |
 Jul 18, 2018 - 4:16 PM
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 Enthusiast  Joined Jul 26, '12 From Atlanta Currently Offline Reputation: 0 (0%)  |
My 1994 Celica ST (7A-FE) is now 25 years old so today's emissions test will be the last! Im celebrating with a new exhaust system.
I already got the eBay stainless header, which I plan to have ceramic coated. I would like to use an aftermarket cat. Should I install the downstream O2 sensor before or after the cat? The guide shows installing it in the downpipe, but in this thread Box (where are you Box?) says to install it after the cat. And what if i don't use a cat? I also wondered where to get the proper flange for the sensor. 
This post has been edited by bryanf: Jul 14, 2024 - 11:08 AM -------------------- |
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Aug 16, 2018 - 5:37 PM
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Enthusiast Joined Jul 26, '12 From Atlanta Currently Offline Reputation: 0 (0%) |
QUOTE (Bitter @ Jul 22, 2018 - 12:34 AM)  Please replace that radiator, the top tank should be black not light brown. It's ready to pop. I replaced the radiator, radiator hoses, and thermostat. Thanks for the advice. -------------------- |
Posts in this topic
bryanf Downstream O2 sensor Jul 18, 2018 - 4:16 PM
Bitter Down stream goes after the cat, but that depends i... Jul 18, 2018 - 10:26 PM bryanf I have two sensors and two cats. The first sensor ... Jul 19, 2018 - 2:13 AM Bitter Ok, you could probably just extend the 2nd O2 to a... Jul 19, 2018 - 10:23 PM
bryanf QUOTE (Bitter @ Jul 19, 2018 - 11:23... Jul 20, 2018 - 3:45 PM Bitter Please replace that radiator, the top tank should ... Jul 21, 2018 - 11:34 PM |
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