× 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: 1994 Chevy Astro Van excessive NOx
Posted to Emissions Forum on 11/16/2001 10 Replies

[...trimmed text...]

Hi Aaron,

It's fixed. He watched the O2 sensor with a Vantage while on the dyno. The signal would flatline at bias voltage every 10 seconds. He kept saying the O2 sensor was goog®, but he was testin... Login to read more.

10 Replies Received (View Replies)