View Single Post
  #13  
Old 05-07-2009, 07:39 AM
Crash's Avatar
Crash Crash is offline
Rising Sun Member
 
Join Date: Aug 2005
Location: Denver
Posts: 1,860
Default

High NOx was the failure point of my '88 Cruiser with the other catagories well within limits. Replaced the O2 sensors and the cat but I'm pretty sure the old sensors were fine - I replaced them as preventive maintenance. NOx numbers dropped to within limits without any other changes besides the new cat and sensors. Timing was set at stock 7*BTDC.
Good luck!
Reply With Quote