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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.

Continue to the description of our next automotive discussion forum, the Industry Events Forum.

Recent Automotive Discussions in the Automotive Emissions Forum

Possibly stupid question...non-monitored downstream cats
12/13/2018 in the Emissions Forum
...prompted by a 2003 4runner V6 that presented itself with a P0420. Vehicle has 4 cats...1 on each manifold and one for each bank before the merge collector into a single exhaust pipe. A/F ratio sensors are in the manifolds upstream of any cats, then 02 ...
12/13/2018 in the Emissions Forum
If a technician has an off day and receives a citation for passing an undercover car that technician must be fired and is not eligible for rehire for one year, AND the shop will also be punished for hiring the technician that made a mistake by losing half...
Running monitors
12/12/2018 in the Emissions Forum
Hi EmF'ers, I retired my SnapOn/Sun BAR97 EIS a few months ago. I loved that machine. Many a smog techs have disparaged that machine, but it always worked well for me. When I first received the machine 20 years ago, I had a Snap On tech show me the ins an...
OIS Freeze Up
11/30/2018 in the Emissions Forum
Anyone other than me having a lot more OIS freeze ups than normal? I am getting several.
1999 Diesel emission laws
11/28/2018 in the Emissions Forum
I had a customer who owns a plumbing business call today and said that he received a letter stating that he must up grade 1/3 of his fleet of F450 diesel trucks to 2010 or newer motors or switch them to gas burning. I have not heard of this. Has anyone el...

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