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Smog pass/fail?

Discussion in '80-Series Tech' started by tech_dog, Mar 2, 2007.

  1. tech_dog

    tech_dog

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    My old 94 just EASILY passed the California smog. I've been anticipating the day it fails, but it's emissions are still around 1/10th what it woudl take to fail.

    Do all of these easily pass smog checks, or are some people having problems beyond keeping the CEL off?
     
  2. fj80psi

    fj80psi

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    Do they have you run AWD dyno for enhanced smog in SoCal? We don't have to Dyno yet in smaller cities (Northern Cal), just all the other headaches. I was picked for a random "test only" when I bought my 91.
     
  3. NorCalDoug

    NorCalDoug problems solved daily...

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    I don't think they run dynos for any full-time 4wd vehicles in CA.
     
  4. TORTUS

    TORTUS

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    My 95 flew through emissions here in AZ, I was worried that it might not. I was very surprised, it hardly even registered on the test.

    No AWD dyno either.
     
    Last edited: Mar 2, 2007
  5. Lugboot

    Lugboot

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    If your state doesn't run AWD dyno, you're probably getting a Two Speed Idle test. No NOx checking included. Just CO, HC, and CO2. I would think with the way most of the people on this forum take care of their trucks, you won't have a problem passing a TSI tailpipe test. I would assume that Cali standards are stricter than PA, but you gotta be pretty gross to fail a TSI test. There's also more leeway typically built into the system for older vehicles that were never engineered to meet current standards.

    1995 is technically pre-OBDII by EPA guidelines, so they really can't scan for codes. But, for all I know, there might be a visual component to the test to look for the CEL or MIL being lit up. Kinda doubtful, though.

    I can't speak for certain on the exact test routines CA runs, just working off knowledge from some other emissions programs.