4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

failed emissions

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Old 01-06-2006, 07:56 PM
  #11  
antiv6
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Default RE: failed emissions

Yeah so far ive got 25 miles on the trip so i guess ill have some fun this weekend. O and i didnt turn the 02 sensors off. Emission test was 25$ but i can retest for free.
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Old 01-06-2006, 09:40 PM
  #12  
SilverGTV8
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Default RE: failed emissions

It's not that he didn't pass with it. He changed the tune before going to get inspected. That resets the table and the car has to go through its cycle before he will pass under an OBD2 test.

I am not sure though if having the rear O2s off will cause a failure or not. I am not sure of what the PCM does with this check.

ORIGINAL: Acer2428

You have a stock mach except for a diablo? You should pass emissions with it on.

P.S. This is just another example of why a tuner should not be one of your first mods.
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Old 01-06-2006, 10:54 PM
  #13  
antiv6
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Default RE: failed emissions

i know the car has nothing wrong with it and after i drive a bit i will pass fine but i did get a failed form so i say i failed but next week i will pass b/c im gonna drive a whole bunch this week so i can go take the test again and then install my steeda cai and a better tune
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