× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: '91 Olds cutlass Ciera High NOx
Posted to Technical Discussion Forum on 9/12/2006 3 Replies

[...trimmed text...]

There is no EGR system. Two cats have been tryed. And the timing is fixed. When I look at the O2 senser, I can see peaks and valleys in the signal.

Login to read more.

3 Replies Received (View Replies)