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Why would a 1992 Accord EX fail an emissions test with high hc CO2 but pass the nox in the 40 kmhr test?
Two possibilities come to mind, strictly theoretical since I don't work as a mechanic, I am an engineer: 1. Running too rich. This lowers the combustion temperature which keeps NOX low but the unburned hydrocarbons and incomplete combustion result in high HC and CO emission. Check O2 sensor, airflow/airmass sensor, computer codes, injectors, etc. 2. An alternative theory is that the catalyst is no longer effective, or perhaps if it has air injection, the air pump is no longer doing its job - the catalyst cannot burn off the pollutants because there is no oxygen available in the exhaust stream or the material is no longer usable.
What else can I help you with?
Why would Honda Accord fail emissions test at idle speed?
I would try oxygen sensor but you need to put it on the machine which will tell you for sure. good luck
Will car pass emissions in Illinois with airbag light on?
The airbag light would have nothing to do with emissions. If they are doing a safety inspection, it would fail.
Why would a Buick Century Sedan fail for emissions?
Usually it is the O2 sensor
Can the fuel filter fail emissions?
A dirty fuel filter could force a lean condition causing the check engine light to iluminate. In which case the vehicle would fail an emissions test.
Will your car fail the emissions test in IL if the check engine light is on?
Yes if it is emissions related.
Will a knock sensor code fail a nys inspection?
That will cause you to fail an emissions inspection. Anything which triggers the CEL will, because everything which triggers it will adversely impact the emissions system on that vehicle.
What happens if you have a muffler without a catylitic converter on it?
you will fail the emissions test.
Will car pass emission in Ohio with air bag light on?
Emissions, yes. If there's an inspection for vehicle safety systems, it would fail that one.
Does a catalytic converter cause a car to fail emissions?
Yes, it can if faulty or missing.
What is the problem of non functioning of erg in cars?
The vehicle will fail an emissions test.
Will a you damage your truck if you continue to drive it with the p0449 code?
No, but you will fail an emissions test.
How would a P0440 code affect a 2000 Chevy S-10?
P0440 = EVAP Emission Control System Malfunction. The Check Engine light would illuminate and you would fail an emissions test.
