High CO emissions. Need help
01-07-2017, 02:34 PM
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High CO emissions. Need help
Hey guys hoping you all can lead me into the right direction on this one. I can't seem to pass my emissions test (failed twice already) High CO levels. Everything else I pass. Good on HC and good on NOX I've put a new o2 sensor. New catalytic and new Coolant temperature sensor. Any ideas of what and where to look at next ?
01-08-2017, 06:07 AM
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High CO is usually an over-rich mixture. http://www.cygnusx1.net/Media/Supra/...taTech/h56.pdf You might want to use a voltmeter to watch the output of the O2 sensor. http://web.archive.org/web/201003261...01heatedox.pdf
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