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1992 Chevy Chevelle
1992 CHEVROLET CHEVELLE
FAILED EMISSIONS TEST
LIMIT READING RESULT
HC ppm 68 142 fail
CO% 0.36 0.53 fail
NO ppm 526 1855 fail
RPM 1734 valid
Dilution 14.2 valid
which parts need to be replaced so it will pass test
have the same problem?
Tuesday, January 13th, 2009 AT 8:42 PM
I would start by having the O2 sensor tested. Also, is there a check engine light on?
Wednesday, January 28th, 2009 AT 4:49 PM
No check engine light on but I will replace the o2 sensor. Thank you
ps I have since replaced the catylitic converter I will have it checked again could a bad coil pack cause this?
Wednesday, January 28th, 2009 AT 5:20 PM
A weak spark could cause the fuel to not burn properly, so yes. Have the O2 sensor checked prior to replacing. I don't want you to spend money if it's ok.
Wednesday, January 28th, 2009 AT 5:37 PM
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