keep failing NOX new spark plugs and oil change and NOX went higher on 2002 Dodge Stratus

also new thermostat

by in Aurora, CO on November 28, 2012
2 answers
ANSWER by on November 29, 2012
do u have eng codes? nox is from high temp in combustion chamber. timing,egr or catt issues
ANSWER by on April 11, 2013
You need to put the same spark plugs that were from initial build. Champion any other will cause problems.