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1990 Chevrolet Corvette Question: car is a gross polluter

 

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Visitor, Bakersfield, CA, August 06, 2010, 09:51

failed at co and hydrocarbon, have no known codes on the computer

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    mastertech6371 August 06, 2010, 09:57
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     Master

    you need to have the engine checked out. plugs, wires, cap,rotor, air filter, o2 sensor, map sensor, cat and compression test. all these things need to be checked for a fialure.

    Roy

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    Visitor, August 06, 2010, 10:04

    have installed new plug wires, distribitor cap, rotor, checked the plugs ,seemed ok.. the cat conv. were tested (pass)at smog station.

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    mastertech6371, August 06, 2010, 10:42
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     Master

    o3 sensor switching fast enough?? what are the cross counts?? how did they test the cat operation??

    Roy

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