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Catalytic converter keep going out

Discussion in '1st Gen. Tacomas (1995-2004)' started by Icefsh, Oct 31, 2015.

Page 2 of 2
  1. Oct 31, 2015 at 7:45 PM
    #21
    Icefsh

    #21
    Icefsh [OP] Member

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    Its real hard to tell if I'm burning oil. The valve covers were leaking pretty bad. replaced them a couple thousand miles ago.
     
    Icefsh, Oct 31, 2015
    #21
  2. Oct 31, 2015 at 7:47 PM
    #22
    KenLyns

    #22
    KenLyns 8.75" Third Member

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    Belly of the Beast
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    LED Headlights, Volant CAI, 32" Duratracs
    ^Burning 1 qt every 5000 miles would not cat damage so quickly. Burning 1 qt every 1000 miles (threshold for most mfr's "defect" definition) would be a different story... But yeah, the PCV valve should be replaced every 5 years / 60k or so.

    It is possible. Something could be causing the ECM to detect a lean condition and inject more fuel to compensate, but not enough to trip the check engine light. Only way to know is to plug in a scan tool to look at the O2 sensors' outputs and fuel trims.
     
    KenLyns, Oct 31, 2015
    #22
  3. Oct 31, 2015 at 7:50 PM
    #23
    Blkvoodoo

    #23
    Blkvoodoo a Hooka smoking caterpillar has given me the call

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    I'm betting if the plugs haven't been changed in who knows how long, the MAF and IAC haven't cleaned been either.
     
    Blkvoodoo, Oct 31, 2015
    #23
    Aught2TaCO likes this.
  4. Oct 31, 2015 at 8:04 PM
    #24
    Icefsh

    #24
    Icefsh [OP] Member

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    Plugs and cleaning sensors is where I will start. Front brake pads also.
     
    Icefsh, Oct 31, 2015
    #24
  5. Oct 31, 2015 at 8:05 PM
    #25
    Aught2TaCO

    #25
    Aught2TaCO Well-Known Member

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    Wheat Ridge, CO
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    Billie 5100's, new leafs, Falken WILDPEAK A/T 3W, 265/75/16E
    It's the little stuff like this that adds up to make it run right.
     
    Aught2TaCO, Oct 31, 2015
    #25
  6. Oct 31, 2015 at 8:07 PM
    #26
    Aught2TaCO

    #26
    Aught2TaCO Well-Known Member

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    Billie 5100's, new leafs, Falken WILDPEAK A/T 3W, 265/75/16E
    If your plug wires are old, consider replacing those also.
     
    Aught2TaCO, Oct 31, 2015
    #26
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