EMISSIONS

1998 CHEVROLET BLAZER
4WD • AUTOMATIC
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SHERMANRAMSEY
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  • 6 POSTS
SO I FAILED EMISSIONS. IDLE READING HYDROCARBONS 438 STANDARD IS 220. CARBON MONOXIDE 2.20 STANDARD IS 1.20 EVERYTHING ELSE PASSED WHATS THE EASIEST WAY TO FIX PROBLEM? ADJUST IDLE SCREW MAYBE?
Jul 20, 2011 at 10:51 PM
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ASEMASTER6371
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could be as simple as a o2 sensor, plugs, air filter or an oil change. all these contribute to the emissions.

Roy
Jul 20, 2011 at 10:53 PM
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RASMATAZ
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Check the air pump and also the catatlytic converter-
Jul 20, 2011 at 10:55 PM
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SHERMANRAMSEY
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O2 SENSOR NOT CHECKED YET OR AIR FILTER NOR PLUGS DID OIL CHANGE AND CAT CONVERTER PASSED
Jul 21, 2011 at 2:11 AM
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RASMATAZ
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What was the CO2 and O2 readings
Jul 21, 2011 at 5:58 AM
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SHERMANRAMSEY
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hydrocarbons idle reading 438 idle standard should be 220 carbon monoxide idle reading 2.20 idle standard should be 1.20 air system n/a i passed everything else loaded readings were 111/220 1.18/1.20 thats all the info i have sorry
Jul 21, 2011 at 6:33 AM
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