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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

To clear, or not to clear
03/20/2020 in the Emissions Forum
Years ago one of the update classes for my smog licenses highlighted the idea of not clearing the codes to make the c.e.l. go away. Instead it showed that we can make the light go off organically by running drive cycles, or operating the engine/vehicle un...
No Non Continuous Monitors Ready
03/16/2020 in the Emissions Forum
[Driveability: 14 Ford E-350 Super Duty 5.4L] Hello all, I have been entrusted by the IEPA and the one of the local park districts to get this bus conversion van through emissions testing. Failed IEPA Emissions testing 3 times for readiness rejects. NO N...
Emissions Testing Tools and Equipment
03/10/2020 in the Emissions Forum
Hi all, I've mainly lived in Florida where there are no real vehicle inspections. I was wondering what tools are required in states that still do emissions testing if it's like just an OBD2 check of monitors and codes, or if dynamometers and drive-testing...
Somebody actually got busted for disabling emissions control
03/06/2020 in the Emissions Forum
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Incomplete O2 monitor post reflash
02/21/2020 in the Emissions Forum
[Driveability: 10 Dodge Ram 1500 Laramie 5.7L] Friends, This vehicle came in for a smog two weeks after a reflash was performed by the local Chrysler dealer for a recall of some kind (don't know which but I'm assuming it was emissions related.) O2 monito...

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