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CEL code PO442

Discussion in '1st Gen. Tacomas' started by takenaflyer, Jun 11, 2008.

  1. Jun 11, 2008 at 6:33 PM
    #1
    takenaflyer

    takenaflyer [OP] Member

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    Did a seafoam treatment about 80 miles ago (5 days), normal driving, then got the evap system leak code. Not sure if there's a connection but regardless, anyone have a suggestion where to start?
     
  2. Jun 11, 2008 at 6:39 PM
    #2
    Toy4Life

    Toy4Life 668: The Neighbor of the Beast

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    Welcome to TW.

    Got no clue where to start on that one. Sit tight though, someone else will chime in soon enough.
     
  3. Jun 11, 2008 at 6:41 PM
    #3
    tacomaman06

    tacomaman06 Carolina Alliance: Lead, follow, or get the hell o Staff Member

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    first......try tightening the fuel cap.......make sure it clicks a few times. may be the problem.


    oh yeah.......welcome to tw!!
     
  4. Jun 11, 2008 at 6:47 PM
    #4
    takenaflyer

    takenaflyer [OP] Member

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    been over the usual suspects...cap, hoses, all look right. Wondering if seafoam dislodged something and clogged an orifice. My Acura TL has a small EGR port that is vulnerable, just wondering if the 3.4 has something similar.

    Oh yeah...thanks for the welcome, glad to be on board. Looks like a great forum!
     
  5. Jun 11, 2008 at 6:47 PM
    #5
    Ridgerunner

    Ridgerunner Well-Known Member

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    Yup. Start with "Chris4x4". He'll be along shortly. He's the technical guru here.
     
  6. Jun 11, 2008 at 7:00 PM
    #6
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    What kind of "evap" leak is it? Small or large? :)
     
  7. Jun 11, 2008 at 7:01 PM
    #7
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    4.10 gears, sliders, and lots of buttons.
    I forgot, How did you put the Seafoam in?
     
  8. Jun 11, 2008 at 7:03 PM
    #8
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    4.10 gears, sliders, and lots of buttons.
    The code for this = a "small evap leak". :D
    I thought the same thing, but he didnt mention adding the seafoam to the tank. :confused:
     
  9. Jun 11, 2008 at 7:04 PM
    #9
    tacomaman06

    tacomaman06 Carolina Alliance: Lead, follow, or get the hell o Staff Member

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    it was the first and simplest thing i could think of when i saw "evap leak".
     
  10. Jun 11, 2008 at 7:08 PM
    #10
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    And its, more often than not, correct. We'll see when he answers back.
     
  11. Jun 11, 2008 at 7:10 PM
    #11
    takenaflyer

    takenaflyer [OP] Member

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    put the seafoam in through the brake assist, about 2/3 of 12oz can. Yeah, small leak. I assume a small leak is a minor vacuum defect vs major, right?

    Should I be looking for loose hose connections?
     
  12. Jun 11, 2008 at 7:10 PM
    #12
    tacomaman06

    tacomaman06 Carolina Alliance: Lead, follow, or get the hell o Staff Member

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    yeah, and he said he already checked the fuel cap, so who knows as of now?? hopefully, a hose doesnt have a small hole in it that he hasnt noticed yet........hopefully something simple.
     
  13. Jun 11, 2008 at 7:11 PM
    #13
    tacomaman06

    tacomaman06 Carolina Alliance: Lead, follow, or get the hell o Staff Member

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    i would definitely check all the hoses.....especially the brake assist hose.
     
  14. Jun 11, 2008 at 7:15 PM
    #14
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    4.10 gears, sliders, and lots of buttons.
    X2. Make sure you didnt break one when doing the service.
     
  15. Jun 11, 2008 at 7:18 PM
    #15
    takenaflyer

    takenaflyer [OP] Member

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    thanks guys, gonna get into it tomorrow and see what I find. I just bought this truck, my 1st Toyota, and it's time we got acquainted anyway. If I find I'll post back -
     
  16. Jun 11, 2008 at 7:19 PM
    #16
    tacomaman06

    tacomaman06 Carolina Alliance: Lead, follow, or get the hell o Staff Member

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    yeah man, let us know what you find!!:)
     
  17. Jun 19, 2008 at 5:06 PM
    #17
    takenaflyer

    takenaflyer [OP] Member

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    well so far the CEL hasn't come back on (and hopefully won't) since I reset it. Maybe the seafoam treatment did it, don't know for sure. I did inspect the gas cap and wiped of the sealing surfaces just in case but nothing significant came off.
     
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