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emisions control

  1. 1

    After market carb??

    I have just bought a 1984 B2, now i'm wondering witch carb i should get or what emissions i could take off of my factory Motorcraft 2 Barrel. I would like to keep the factory but it likes to stall at any steep hill
    • 1984bronco2
    • Thread
    • after market carb carborator emisions control emissions
    • Replies: 1
    • Forum: Bronco II
  2. M

    p431 code and running like crap

    After years of ignoring the light, I think it may have gotten me. The only code I have is the p431 code (Cat efficiency below threshold, bank 2). Now my question is is do I need to change the cats, or could I just do the O2 sensors. I have had this have code for at least 4 years, but until...
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