EGR valve
12-13-2010, 04:02 PM
#23
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Go the catalytic converter changed Friday and I failed the emissions again today. I'm running out of ideas here on why it's putting out too much NOx. Anyone?
12-13-2010, 06:02 PM
#24
You did get a three way catalytic put on right? When you changed the EGR valve did you get the one for an automatic trans because there is a difference. Does the car have headers?
Things that affect Nox : running lean, ignition timing too high, high combustion chamber temps, carbon in combustion chambers,
Things that affect Nox : running lean, ignition timing too high, high combustion chamber temps, carbon in combustion chambers,
12-23-2010, 02:18 PM
#25
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Sounds like it definitely could be fuel. Otherwise ICM is a possibility, with an easy test at autozone (test it 6-9 times to heat it up). If you get low resolution codes, its your opti. Thanks for thinking of us.
