Question about 1994 Nissan Altima

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1994 altima failed emmision for co

Failled for co emmissions in AZ passed other two tests replaced my co2 sensor and my co reading went from a 15 to a 13 but in AZ you need to have a 12 what should i do my is tight out of work need to fix quick

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Change the oil, this should lower it enough to get you through, also run the car on the freeway if possible to heat up the catalytic converter as much as possible, leave it running and wait for the test to be run, I was a smog tech for years and these are the tricks I used to get cars to pass that were as close to the limit as yours.

Posted on Oct 04, 2008

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