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Automotive Emissions Forum

Professional automotive forum for discussion of automotive emissions, on-board diagnostics (OBD2), and emissions testing programs around the world. The discussions often cover both the non-technical aspects (such as enforcement, automotive politics, and legal), as well as the technical aspects of emissions and emissions-related repairs, including the differences between vehicle certification and the various inspection and maintenance programs around the world. This forum is for experienced automotive repair professionals only, membership required.

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Recent Automotive Discussions in the Automotive Emissions Forum

Toyota Forced Monitors
10/22/2019 in the Emissions Forum
Hi EmF,ers, Has anyone forced a monitor on a Toyota? If you have, what MY and model? I was reading on the NASTF site that it's listed as one of the features of Techstream. TIA,.
87 renix jeep fuel control only with scanner connected
10/16/2019 in the Emissions Forum
[Driveability: 87 Jeep Wrangler 4.2L] Hi this is actually tech Aaron Weaver.I haven't been here in awhile. Im hopeing somebody remembers what is indicated by no fuel control unless scanner is connected. Ive checked grounds by dipstick. Checked batt to bl...
10/15/2019 in the Emissions Forum
I have a one man test only shop about a quarter mile away. He has been in business 20 years. Honest and hard working. He was tricked into passing an undercover car. Because of his citation he will lose his Star Certification. Half of his business was Star...
What Happened Here?
09/30/2019 in the Emissions Forum
A guy came by the shop wanting a smog test. [Referee Certification Required] What exactly happened here? Have you seen this? All we could get was his buddy did something. What that was I don't know. I'm thinking he hooked another vehicle up and ran that c...
11 impala o2 monitor
09/26/2019 in the Emissions Forum
[Driveability: 11 Chevrolet Impala LS 3.5L] I have an 2011 impala vin k, 3.5 flex, will not run o2 sensor monitor no permanent codes, no codes stored, arrived with 2 new oem sensors installed confirmed part #s, I.P.T. data indicates 145 engine starts fro...

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