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5 Faulty Codes....

Discussion in 'ECU's, Electronics, and Tuning' started by jtornado, Nov 20, 2007.

  1. jtornado

    jtornado New Member

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    I have a 97 civic ex and I noticed my car starts misfiring and even my fuel gauge shows that Im using 1/2 my tank in 80 miles. I did a self-dianosis and picked up 5 codes. Code 67:Catalyst system efficiancy below threshold and Code 71-74:Cylinder misfire #1-4. So should I not blame it all on my CAT or could it be multiple things??????
     
  2. norcalgsr

    norcalgsr Honda Master Technician

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    The misfire could be causing the catalyst code, but if you've been driving it like that for awhile there's a good chance you burned up the converter from having all the misfiring going on. There are a number of things that could be causing your problems, but the first thing I would do is a tune up (plugs, wires, cap, rotor) and see if the misfire problem goes away. Also check your fuel pressure & fuel delivery to make sure that's not causing the misfiring.
     
  3. jtornado

    jtornado New Member

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    Could I ask where you went to school for Honda????? Im currently at Central Lakes College and I plan on going to a Honda school in the future. I would love to work mostly on hondas!!!!!! Its what interests me the most and I love learning new things about them.
     
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