Question about 1995-1997 Chevy Suburban Ignition Starter Alarm switch
My 95 Suburban won''t pass our county emissions for the 1st. time in 14 years for a higher than normal CO output.
Does anyone know what will cause this ?
The readings are as follow:
CO 2500RPM 2.15 The limit is 1.20 FAIL
CO Idle 3.22 The limit is 1.20 FAIL
This is a 454 throttle body type fuel injection
HC 2500RPM 37.8 Limit 220.0
CO2 2500RPM 13.53
HC Idle 121.2 Limit 220.0
CO2 Idle 12.86
EVAP Gas Cap 27.90 In H20 Limit 6.00
Run the fault codes and look for problem heated oxygen sensor ( HO2S) in the exhaust manifold , or problem oxygen sensor (O2S) after the cat converter, problem EGR system or problem cat converter
Posted on Apr 05, 2017
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Posted on Jan 02, 2017
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