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Idle Air Control Valve Iac
FAILED AIR CARE ON IDLE TEST ONLY
1989 Nissan Pathfinder
December, 6, 2008 AT 12:16 PM
Engine Performance problem
1989 Nissan Pathfinder 6 cyl Four Wheel Drive Manual 260000 miles
I have tried to get my car tested for air care but failed on idle test only and wondering what would be the cause of the problem. All other test passed with flying colors.
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December, 6, 2008 AT 1:29 PM
I have tried to get my car tested for air care but failed on idle test only
Post the readings maybe I can help which one -HC/CO/O2/CO2/NOX
December, 6, 2008 AT 2:31 PM
My test results: 2008-03-17 13: 49: 38 261,000 Kilometers
Driving HC = 22 ppm Pass
Driving CO = 0.15 % Pass
Driving NOx = 47 ppm Pass
Idle HC = 143 ppm Pass
Idle CO = 3.73 % Fail
There must be some intermittent problem as over the years of testing. It has always been the Idle Test Failing and when it passes it's reading is very low from.026 to 1.49 readings
December, 6, 2008 AT 2:44 PM
Idle CO = 3.73 % Fail way too high
Have the coolant temperature and oxygen sensor checked out
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