Dec 11, 2007 · There are two primary ways a car controls NOx. controlling the cylinder temps with the EGR system, which basically displaces a wee bit of incoming air (and its constituant …

Oct 22, 2007 · I have a 1992 Nissan Maxima GXE, the car failed NOX emissions with a 6.25 (allowable is 3.25). EGR functions, Replaced O2 sensor (still didn’t pass lowered to 5.25). I am …

Jul 31, 2011 · My 1992 Honda Accord failed the emission test today for a too high NOX reading. The applicable standard is 2.50 and my car’s reading was 2.61. I’ve read that high NOX has …

Jul 6, 2011 · Excessive NOx is formed by high coombustion temps, and the two primary methods used to control it are the Exhaust Gas Recirculation (EGR) system, which displaces a bit of …

Oct 1, 2010 · Having a new one (code detected) put in now and the price was no fun. So after a NOX sensor senses NOX, what does it do about it. I have no emissions test requirement. So …

Mar 25, 2014 · By all means check the EGR system out. That allows a wee bit of inert exhaust to be drawn into the intake under load, thus keeping the cylinder temps from becoming hot …

Jun 26, 2017 · The EGR was introduced purely as an emissions device (to dilute the incoming charge with pre-burned gasses which leads to lower combustion temperatures so NOx would …

May 4, 2009 · Only the emissions test can label a car a Gross Polluter. Emissions measured include Carbon Monoxide (CO), Carbon Dioxide (CO2), Hydrocarbons (HC) and Oxygen (O2). …

Sep 30, 2018 · I really need some advice. I have a 2005 chevy tracker. It came from the factory with a 2.0 suzuki engine. It has failed emission 3 times for NOx. 6 months ago, had the top of …

Mar 1, 2021 · Why PCV valve keeps failing? The last one is a week old - its an Acura part. This can also cause high NO. Mobile 1 5W30 has been there for 3k miles. Its brownish (dark side) …