1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

CEL. 442 and 446. Looking for FSM and advice

Discussion in '1st Gen. Tacomas (1995-2004)' started by Assforkr, Jul 6, 2020.

  1. Jul 6, 2020 at 5:24 AM
    #1
    Assforkr

    Assforkr [OP] Well-Known Member

    Joined:
    Sep 2, 2014
    Member:
    #137420
    Messages:
    218
    Gender:
    Male
    MA
    Vehicle:
    03 taco
    2003 V6 with 160 on the clock.

    Truck has been giving me CEL after a few days sitting idle.Codes read P0442 very small leak and P0446.

    Aside from the warning light I sometimes get a whiff of exhaust fumes (think burn ammonia). I did some digging and found this thread (https://www.tacomaworld.com/threads/p0446-code-what-do-i-check-first.209633/page-2) but unfortunately for me NCTORA links for the FSM don't work anymore and I'm not sure about the locations of the VSVs.

    Can someone provide link to the FSM? Any advice on testing the VSV? Anyone got VSV locations?
     
  2. Jul 6, 2020 at 7:22 AM
    #2
    Black DOG Lila

    Black DOG Lila Well-Known Member

    Joined:
    Jun 14, 2019
    Member:
    #296344
    Messages:
    7,397
    Virginia
    Vehicle:
    2003 Tacoma SR5 2.7 5 speed 4WD
    Stock. EZ pass.Dump pass.Inspection sticker.Convict printed lic.plates.FG cap.
    Here's a pic of the Purge Selnoid valve (VSV)
    And a link to EVAP malfunction
    https://parts.olathetoyota.com/p0446-code-toyota
    IMG_20191023_224059219.jpg IMG_20191023_224036969.jpg
    Test voltage to purge Selnoid with multi meter.
    Test Purge Selnoid with 9v battery by applying 9v and check for air flow when open and no flow when closed as indicated by clicking of Selnoid.
    Good gas cap seal?
    Vac lines leaking?
    1psi smoke test for leaks?
     
    Last edited: Jul 6, 2020
  3. Jul 6, 2020 at 10:02 AM
    #3
    Assforkr

    Assforkr [OP] Well-Known Member

    Joined:
    Sep 2, 2014
    Member:
    #137420
    Messages:
    218
    Gender:
    Male
    MA
    Vehicle:
    03 taco
    haven’t done smoke test. Gas cap is oem and is about a year old. I doubt that’s the culprit.

    Theres three VSVs right? Two in the engine bay and one by the Cat? Is it legit that you can hear the valve click to confirm function by applying 9v?
     
  4. Jul 6, 2020 at 10:29 AM
    #4
    Black DOG Lila

    Black DOG Lila Well-Known Member

    Joined:
    Jun 14, 2019
    Member:
    #296344
    Messages:
    7,397
    Virginia
    Vehicle:
    2003 Tacoma SR5 2.7 5 speed 4WD
    Stock. EZ pass.Dump pass.Inspection sticker.Convict printed lic.plates.FG cap.
    Gas cap can fool you. Examine the Oring and metal spout seating surface closely. 9v battery test is legit, it clicks, but misleading sometimes as mine checked out good on test but was working/leaking intermittent. VSV for EVAP is the Purge Selnoid. 2nd VSV is for EGR function. What is this 3rd VSV you speak of by catalytic converter?
     

Products Discussed in

To Top