× 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: Old School Test
Posted to Emissions Forum on 8/4/2019 1 Reply

I know you don’t do a lot of tail pipe testing on Maui, but I can tell you that despite all the text books saying a thermostat can cause high NOX, I have never seen it. As long as there is coolant in the block. If you have no coolant, then it will form NOX, bu... Login to read more.

1 Replies Received (View Replies)