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How long does the computer take to "register" a new catalytic converter?

Discussion in '4 Cylinder' started by geoff06, Mar 3, 2011.

  1. Mar 3, 2011 at 8:35 AM
    #1
    geoff06

    geoff06 [OP] 261k and counting

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    Anyone have any ideas? Should I reset the comp now that the new part has been installed? My truck is an '01 2.7L Prerunner. sorry, not sure if the 4-banger section is best for this or not:eek:
     
  2. Mar 3, 2011 at 10:50 AM
    #2
    dustinclm

    dustinclm Well-Known Member

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    if my understanding is correct, reset the computer by unplugging the negative terminal of the battery for 15 min or so and the computer will recallibrate with in a few times of using it, if not by the first time
     
  3. Mar 3, 2011 at 11:58 AM
    #3
    Janster

    Janster Old & Forgetful

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    You don't have to do anything..... it'll relearn itself.
     
  4. Mar 7, 2011 at 10:40 AM
    #4
    geoff06

    geoff06 [OP] 261k and counting

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    thanks for the replies, but i'm good to go now. after driving about 15 miles to the emissions test center, i passed smog. so all is well now
     
  5. Nov 20, 2012 at 8:41 PM
    #5
    12TRDTacoma

    12TRDTacoma Mid Traveling

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    Instantly. Unless of course the check engine light is on with a P0420 code, which in that case you might want to pull off the ground cable from the battery or clear the code with a scanner real quick.
     
  6. Nov 21, 2012 at 4:34 AM
    #6
    skytower

    skytower Well-Known Member

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    Hitch and wiring, aux back-up light, rear strobe lights, radio and underseat sub.
    Some of the monitors take a few days to pass, depending on your driving conditions. Resetting the ECU right before going to the emissions check, and they won't pass you. Plan accordingly.
     
  7. Nov 21, 2012 at 8:42 AM
    #7
    12TRDTacoma

    12TRDTacoma Mid Traveling

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    Yeah, this right here. If you're replacing a cat for smog failure reasons make sure the station at least checks the monitors for you to make sure they are all clear before you run it and they fail you for that.
     
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