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Strange sound from inside dash...

Discussion in '1st Gen. Tacomas (1995-2004)' started by ebolbol, Oct 29, 2009.

  1. Oct 29, 2009 at 5:53 PM
    #1
    ebolbol

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    ebolbol [OP] Member

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    When I'm stopped with the car idling, I hear what sounds like either the Air intake selector or Air flow selector in the Air conditioning system is cycling back and forth :confused: almost like a flow deflector flap is opening and closing. When I change selections using the air intake selector; say from vent to floor, no change, sounds like the cycling continues. I'm only assuming its the Air conditioning system, could be something else, but it appears to be coming from inside the dash in that general vicinity.

    2003 PreRunner DoubleCab
     
    ebolbol, Oct 29, 2009
    #1
  2. Oct 29, 2009 at 6:57 PM
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    slickyd

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    slickyd Well-Known Member

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    I have the same truck and I think I have the same sound from what I can get from your post.
     
    slickyd, Oct 29, 2009
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  3. Oct 30, 2009 at 6:24 PM
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    ebolbol

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    ebolbol [OP] Member

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    The bad thing is I don't even know how to go about troubleshooting. What exactly does yours sound like? With mine, you only notice it when the car is stopped and idling. It's a very subtle sound and it seems to cycle back and forth (whatever it is) about every second to couple of seconds over and over. It sounds like a flap or a door that keeps opening and closing on top of a hollow opening. It's Very hard to describe.
     
    ebolbol, Oct 30, 2009
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  4. Oct 31, 2009 at 7:26 AM
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    slickyd

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    slickyd Well-Known Member

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    Mine does it went the ac is on. I would say it kinda sounds like something being turned on and it has kind of like a hissing/buzzing kinda sound to it. its the best i can describe it. sorry. And I can only here it while im stopped.
    ​
     
    slickyd, Oct 31, 2009
    #4
  5. Oct 31, 2009 at 8:01 AM
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    swise

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    swise TRIFECTA!!!

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    there is an adjustment you can make that will help, turn the knob above the a/c panel clockwise until you can no longer hear it :)
     
    swise, Oct 31, 2009
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  6. Nov 1, 2009 at 9:38 AM
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    ebolbol

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    ebolbol [OP] Member

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    Is it the cold / hot climate control knob?
     
    ebolbol, Nov 1, 2009
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  7. Nov 1, 2009 at 9:51 AM
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    ToyotaPartsBarn

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    ToyotaPartsBarn Parts Master

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    There was a TSB published concerning interior noises. TSB NV006-02
     
    ToyotaPartsBarn, Nov 1, 2009
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  8. Nov 1, 2009 at 6:57 PM
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    slickyd

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    slickyd Well-Known Member

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    he means the fan/off switch.
     
    slickyd, Nov 1, 2009
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  9. Nov 2, 2009 at 1:42 AM
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    WhatThePho?

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    WhatThePho? Greg Graffin 2016

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    The things required to pull bitches
    Mine has that sound its from Mud in the AC Idler bearing. It sounds like there's dirt grinding in it.
     
    WhatThePho?, Nov 2, 2009
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  10. Nov 2, 2009 at 3:07 AM
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    swise

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    swise TRIFECTA!!!

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    I mean the volume knob!
     
    swise, Nov 2, 2009
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  11. Nov 2, 2009 at 5:53 AM
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    slickyd

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    slickyd Well-Known Member

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    oh sorry. Thats what i do.
     
    slickyd, Nov 2, 2009
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