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International Automotive Technicians Network
Re: 94 Sentra Failing Emissions For NOx
Posted to Technical Discussion Forum on 12/18/2018

Hi Miles

Understanding what causes Nox to increase is to be considered along with how it's controlled. The EGR system is designed to reduce the peak combustion temperatures to reduce Nox,so anything that affects engine temperature is a factor. A functioning ... Login to read more.