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Old 06-10-2008, 05:58 PM
nismo_pilot nismo_pilot is offline
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Re: How can you figure out what CAT is going out?

you have the 1.8l qg18de.... telling us the code is for the cat going out is vague, give us the code so we can help, as was mentioned earlier sensor 1-2 are the mixture feedback sensors, and 3-4 are the catalyst efficiency monitors, the latter are worthless but the first two can ruin your gas mileage, you should be able to make a diagnosis based on your recent fuel economy
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2005 Aztec Red Spec-V

Nismo header, ES MMI, AEM CAI, UR Pulley, TB Coolant bypass, TWM SS, Kumho Ecsta's, 2x JL Audio W0 subs

9.02@ 84.4mph in the 1/8th....... Driver > Car
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