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!st Gen V6 Surging issue

Discussion in '1st Gen Tundras (2000-2006)' started by CGtoyota, Feb 18, 2020.

  1. Feb 18, 2020 at 12:14 AM
    #1
    CGtoyota

    CGtoyota [OP] New Member

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    I have a 2004 V6 SR5 that has a surging issue but w/ no check engine light. I replaced a ton of stuff, mass air flow sensor, throttle body w/TPS, spark plugs, 02 sensors (both banks), no vacuum leaks that I can find. I ended up taking it in to Atkins Kroll Toyota and they couldn't figure it out either. (thought maybe I got a back Throttle Body off Ebay). Im stumped hope to get some help on here and lend it where I can. Thank you.
     
    Last edited by a moderator: Mar 9, 2021
  2. Feb 18, 2020 at 5:47 AM
    #2
    JohnLakeman

    JohnLakeman Burning Internet Daylight

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    Outside of Weird, TX
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    2017 MGM DC TSS 4.6L
    TRD Pro grille, 2018 LED Headlights, Undercover Flex bed cover, Neoprene seat covers, Bed/tailgate mats, Power tailgate lock, auto headlights, illuminated key switch
    Can you describe the "surging issue" conditions? "Surging" can mean different things to different people. Does this "surging" problem occur only on acceleration, or constant on/off while cruising, on/off at idle, etc...?

    My first thought is an intermittent vacuum leak. If that is true, then occurrence is likely to be random. Modern vehicles have about a mile of small diameter vacuum hose underhood for all the environmental controls. Historically, Toyotas come with great rubber, but nothing lasts forever.
     
    Tundra2 likes this.
  3. Feb 18, 2020 at 12:21 PM
    #3
    CGtoyota

    CGtoyota [OP] New Member

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    Thanks John yeah there’s a very small hunt at idle and then through out acceleration it has like an even surge through the power band. I wouldn’t call is a hesitation just due to it having no problem going from stop to start as with a fuel delivery Issue. It’s gotta be a vacuum leak I’m thinking or a sensor fault but no luck with either of those. And I would figure that Toyota would have been able to locate a vacuum leak.
     
  4. Feb 18, 2020 at 12:49 PM
    #4
    CGtoyota

    CGtoyota [OP] New Member

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    The surge is like a shuttle jerky ness through out acceleration, I’m going to try and upload a video
     
  5. Feb 28, 2020 at 3:45 AM
    #5
    artsr2002

    artsr2002 2005 Tundra DC SR5

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    Last edited: Feb 28, 2020
    Tundra2 likes this.

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