1992 Ford F150 bad nox

1992 FORD F-150
Avatar
MCREB
  • MEMBER
  • 1 POST
Engine Mechanical problem
1992 Ford F150 6 cyl Two Wheel Drive Automatic

what would cause high Nox when all vacum lines are in new condition and the egr valve workin properlly. everything else passed with real low numbers on the state inspection in texas
Feb 1, 2010 at 9:56 AM
Advertisement
Avatar
DOCFIXIT
  • ✓ASE Certified Mechanic
  • 18,828 POSTS
  • ASE Certified Mechanic
High NoX is assicitaed with EGR low flow. Valve maybe opening but passage ways could be cloged with carbon
Feb 1, 2010 at 2:51 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.