Do i need my secondary O2 sensor???
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Do i need my secondary O2 sensor???
hey i just put a hi-flo cat on and it doesn't have the hole for the secondary O2 sensor...do i need to take it somewhere to get a hole put in? b/c i didn't kno if i should drive around w/o my secondary O2 sensor?
thanks in advance for the help!
thanks in advance for the help!
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Re: Do i need my secondary O2 sensor???
I'm assuming you have an OBD2 car if you have a secondary O2, right? I don't remember but I think you'll throw a CEL if you don't have a functioning/useable secondary O2 sensor on it.. I know on Focuseseses you'll throw a CEL after a little while if you have the O2 sensors too close or not coupled on either side of a cat (i.e. you have a test pipe) and I think most OBD2 cars are the same..
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Re: Do i need my secondary O2 sensor???
Originally Posted by Woodrow
Yes you will need a downstream O2 sensor otherwise it will throw a code.
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