SeansBlueXJ
NAXJA Forum User
- Location
- Plainfield Township, PA
My fiance took her 88' 4.0 in today for inspection. Emissions failed for high NOx standard was 1300 and some change she read 1700 and some change. Now emissions is not my strong suit so a) what is NOx in the first place, and b) what causes it and better yet what can be checked to try and correct. Other then the NOx issues she's running in tip top shape and would pass. Little help guys, :banghead: would hate to have it off the road for this small issue.