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AW70 questions (SpazMan) 700 1987

uid 29404's pic
posted by  punk240 on  Mon Apr 28 13:40 CST 2008
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last visit: Mon Jul 14 15:23 CST 2014
[RELATED]

Hi folks,

I notice a rubbing, wooshing sound emit from my tranny ~3 seconds before it shifts under moderate load. The noise only lasts 3/4 of a second or so, but is noticeable with the windows down ("vroooommmmSCREE-EECHmmmmmmmmmmshift"). I don't know enough about automatic transmissions to understand what could be going on... why would a clutch pack move that long before a shift?

Coincidentally, my folks' Honda Accord's transmission does this also, but only occasionally. It's FWD, but the EXACT same sound.

What do you think?

Thanks,

Ari








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    AW70 questions (SpazMan) 700 1987

    posted by  someone claiming to be joe on  Tue Apr 29 07:20 CST 2008 [RELATED]

    Might be slipping between shifts, during shift I mean.
    Mine does when low on fluid, I have a slow leak so I get it often.








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      AW70 questions (SpazMan) 700 1987

      uid 29404's pic
      posted by  punk240 on  Tue Apr 29 09:16 CST 2008
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      last visit: Mon Jul 14 15:23 CST 2014
      [RELATED]

      Hmmm, interesting. Well, I have a tranny flush scheduled for both the 740 and the Honda, so... we'll see if that makes any diff (haven't checked the Honda's fluid in ages). Funny thing is, on the Volvo, I think the fluid is overfilled - if I'm reading the dipstick right (fluid is about an inch higher than 'max'). Does that cause slipping also?

      Thanks!

      Ari








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        AW70 questions (SpazMan) 700 1987

        posted by  someone claiming to be joe on  Tue Apr 29 10:56 CST 2008 [RELATED]

        I was told excess fluid can cause trouble, foaming and all that stuff.








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          AW70 questions (SpazMan) 700 1987

          uid 29404's pic
          posted by  punk240 on  Tue Apr 29 11:28 CST 2008
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          last visit: Mon Jul 14 15:23 CST 2014
          [RELATED]

          I think it could be related to slipping problem I have at highway speed - seems the governor gets confused about fluid pressure. If this doesn't fix it, I'm going to do the tailshaft bushing.

          Thanks!

          Ari







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