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Transmission makes a noise when in Drive

Discussion in '1st Gen. Tacomas (1995-2004)' started by Jdaniel1274, Dec 27, 2011.

  1. Dec 27, 2011 at 2:20 PM
    #1
    Jdaniel1274

    Jdaniel1274 [OP] Well-Known Member

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    2001 DC 4x4, 3.4, Automatic Transmission. 156,xxx miles

    My Tacoma makes a sound like an electric car (for lack of better terms) when I put it in Drive, the sounds gets louder as I accelerate, but when the transmission shifts up in higher gear the sounds goes away. The sound is not there in neutral or park. I was wondering what it would be, I am hoping not the torque converter. Any ideas???

    Thank you!
     
  2. Dec 28, 2011 at 6:58 AM
    #2
    Jdaniel1274

    Jdaniel1274 [OP] Well-Known Member

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  3. Dec 28, 2011 at 7:51 AM
    #3
    jking3002

    jking3002 Well-Known Member

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    Mine has the same sound. Slight high pitched whine, right? Goes away upon shifting into second?

    My guess IS the torque converter actually, although I wouldn't rule out tranny problems. What I have tried to fix the problem was a flush of the tranny system, and this fixed nothing.

    I would take it to a mechanic if it really bothers you. Personally I'd go with a transmission shop, and not the stealership. My truck has driven about 7 thousand trouble free miles for me with this issue, just so you know.

    Also, my truck has thrown a code for throttle position sensor, maybe yours has as well? A long shot, because I don't see how that would matter at all with this issue, but hey, worth a try.
     
  4. Dec 28, 2011 at 12:29 PM
    #4
    Jdaniel1274

    Jdaniel1274 [OP] Well-Known Member

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    01 DC TRD 4X4
    PIAA lights, OMD leaf spring mod, magna flow muffler, oil filter relocation kit
    Thank you for the reply, that is exactly what the truck is doing, I have also driven several thousand miles with the issue, trying to save the money for worst case scenerio. I have not had good experiences with the dealership, so I do everything that I can to my truck, but automatic transmission, is way past my mechanical skills. The truck is not throwing any codes, so I was thinking torque converter too.

     
  5. Feb 26, 2012 at 12:49 PM
    #5
    Bigmikelakers

    Bigmikelakers Well-Known Member

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    Yup, I have this same problem with my 4runner. Had my mechanic drive it and he told me its the planetary gear causing the whine in 1st gear. As soon as it shifts into 2nd, it goes away. He told me that it wouldn't be worth do a rebuild/open the tranny at this moment since the problem its pretty minor since the transmission shifts perfectly and the fluid looks beautiful.
     
  6. Feb 26, 2012 at 1:08 PM
    #6
    millerm20

    millerm20 Member

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    mark miller
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    the sound could be from broken or cracked flex plate
     
  7. Aug 3, 2015 at 9:00 AM
    #7
    Sthomson77

    Sthomson77 Member

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    Steve
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    Did you ever find the root cause? I have a similar situation with 185,000 miles on my 2004 Tacoma. All shifts are fine, fluid looks good too, but my continues the noise into second gear.
     
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