87 volvo non-turbo high nox failure with new cat. coNv. and tac box and spark plugs/ eng. compression 190psi.-200psi. nox limit 730ppm.. readings in front of cat. 15mph co2 11.51 o2 4.56 hc 129ppm co .66 nox 2945 25mph co2 11.60 o2 4.59 hc 115ppm co .70 nox 27...

FIX posted 12/15/2003

iATN Members:
Login to view full TechHelp request
Auto Repair Pros:
Join iATN to read this TechHelp request
Vehicle Owners:
Find a nearby iATN member to repair your vehicle