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Enthusiast Joined Feb 17, '07 From wisconsin Currently Offline Reputation: 0 (0%) ![]() |
so my '94 celica gt failed its emission test again (2nd time) this past week. it gave me the same reading that im making too much CO. i changed the oil, oil filter, air filter, sparkplugs, even poured in a bottle of seafoam into a full gas tank..and it still fail. i was given a few options b4 my next emission..either i replace the knock senser, or replace the O2 senser (a buddy recommended either, or both). just curious if u guys can piont out anything else that might b causing this high level of polution..just anything. thanks.
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![]() Enthusiast ![]() ![]() Joined Aug 18, '04 From Silverdale, WA Currently Offline Reputation: 0 (0%) ![]() |
I would say that you cat is your problem. It is supposed to convert the CO to CO2. Also the knock sensor will not help you. That doesn't affect your emissions.
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Lo-Fi Version | Time is now: February 23rd, 2025 - 6:20 PM |