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A bad EGR valve would be the first place to look, because the EGR was invented to kill NOx. Improper engine timing, a lean air fuel mixture, and problems with the cooling system can also increase NOx.
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What could cause the nox to be to high on a 1999 dodge durango?
Bad EGR, Exhaust Gas Recirculation valve. That is what reduces NoX emissions
O2 sensor can cause high Nox?
Nox is The abbreviation of Oxide(s) of Nitrogen. These are only produced at high burn temperature's. In a modern engine excess Nox emissions can be caused by a lean fuel mixture caused by a failed O2 sensor(s) Or A failed or pluged EGR valve
What causes High NOx in 87 Volvo 740 non-turbo to fail state inspection?
Several things can cause high NOx: lean mixture, bad 02 sensor,exhaust leaks before the catalyst, a defective catalyst, high engine compression (carbon buildup), are among the most common.
How are nitrogen oxides produced?
it is produced form animals, plants and factory.
Exhaust from motor vehicles is the number one cause of what?
The engine is burning fuel.
Where is the NOx sensor located on a 1987 Chevy truck?
the oxygen sensor is in the exhaust manifolds, there should be one for each side
What causes high nitrogen oxides in a 1995 jeep Cherokee?
nox is from exhaust temps too high or a cat. convertor breakdown.
When was Polypoetes nox created?
Polypoetes nox was created in 1909.
When was Bona nox created?
Bona nox was created in 1788.
What is the meaning of sox and nox in boiler?
SOx ana nox
How tall is Kara Nox?
Kara Nox is 5' 4".
How do you correct high NOX on a Toyota 4AC engine?
Either clean or replace your EGR valve.. this should help.
