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2005 DC trans shift noise from firewall area?

Discussion in '1st Gen Tundras (2000-2006)' started by northernnutter1, Jun 29, 2020.

  1. Jun 29, 2020 at 12:31 PM
    #1
    northernnutter1

    northernnutter1 [OP] New Member

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    Hi There, I'm new to the forum and just getting familiar with my Tundra. Recently I had the transmission fluid dumped and replaced at Toyota dealership. Before that I noticed lazy shifts between 2 and 3rd. Or 3 and 4th? Seems to be shifting fine now, except..
    Now I hear this hissing noise from inside the engine bay, drivers side happens just before shift point. Sounds like someone going pssshhhhhhhtttt then shifts. Best I can describe it. Really noticeable when the window is down, particularly between 1/2 and 2/3. Really don't have a clue where to start diagnosing on this one. ?? Thanks!!
     
  2. Jun 29, 2020 at 12:34 PM
    #2
    Professional Hand Model

    Professional Hand Model A.K.A ‘Golden Hands’

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    Start checking for loose or disconnected hoses. Your year has the air injection thingys which may be a cause. Someone with your year Tundra will come along and help.
     
  3. Jun 29, 2020 at 1:34 PM
    #3
    northernnutter1

    northernnutter1 [OP] New Member

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    cool golden hands! lol thanks for the clue about air injection thingies. I'll go poke around this aft.
     
  4. Jun 30, 2020 at 9:13 PM
    #4
    northernnutter1

    northernnutter1 [OP] New Member

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    Well nothing obvious. But the sound is more like an electronic sound bzzzzzttt almost like a strangled duck. It’s pretty bizarre , I really don’t have any useful knowledge of computer controlled transmission like this. This noise comes on a few seconds before the trans shifts to next gear.
     
  5. Jul 1, 2020 at 6:25 PM
    #5
    bmf4069

    bmf4069 Yup, that's car parts in a dishwasher

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    Can you get a video of it?
     
  6. Jul 1, 2020 at 6:33 PM
    #6
    Professional Hand Model

    Professional Hand Model A.K.A ‘Golden Hands’

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    This mission shall now be called Operation Bbzzzzztttt!

    Not sure if this was coincidence or now, but today I heard an old looking 4Runner (not sure year/gen etc as they’ve never really blown my skirt up) driving down the road at about 40-45 mph and it sounded like a mechanical Bbzzzzzztttt for at least 3 seconds. I was standing there thinking about this thread.
     
    bmf4069 likes this.

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