Re: Failed CO emissions badly - Saab 900 Bulletin Board - Saabnet.com
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Re: Failed CO emissions badly
Posted by JohnK (more from JohnK) on Wed, 3 Oct 2001 10:37:09
In Reply to: Failed CO emissions badly, Ovi, Wed, 3 Oct 2001 10:11:44
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You are probably running too rich. Check temp sensor(and connection), resistance should decrease as car warms up, which tells computer to lean out mixture. O2 sensor is another possible culprit, make sure your idle varies ever so slightly when warmed up. If turbo, set your timing at 16 BTDC. Clean all your ground connections at radiator, trans, and those on the head (be sure to keep the wires going to the same bolt). Do this before you replace the catalytic converter, since bad cat will normally cause NOX failure.
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