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700r4 whine ?

Discussion in 'The Garage' started by CB77GMC, Nov 20, 2006.

  1. CB77GMC

    CB77GMC 1/2 ton status GMOTM Winner

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    Destroyed th350 and just swaped in a 700r4 and all seems good but I hear kind of a low pitch whine noise when it is in gear. Just wondering if this is norm. I think the only reason I hear it is that I have trans cover off on floor pan. :confused:
     
  2. ryan22re

    ryan22re 1/2 ton status

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    Have any leaks? My guess is that it's coming from the pump or pump seal.

    Or put the trans cover on it and turn the radio up. :D
     
  3. CB77GMC

    CB77GMC 1/2 ton status GMOTM Winner

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    Trans has no leaks but 208 has a drip :rolleyes:
     
  4. Confedneck79K30

    Confedneck79K30 3/4 ton status

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    is it more noticeable at idle or while driving?
     
  5. CB77GMC

    CB77GMC 1/2 ton status GMOTM Winner

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    Driving low speed and reverse.
     
  6. Confedneck79K30

    Confedneck79K30 3/4 ton status

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    could be the pump whining...
     
  7. my88texastruck

    my88texastruck Registered Member

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    Could also be your torque convertor. Does it stop whining in park and neutral?
    When you put it in gear, the convertor locks 70 or so percent in which the internals start spinning on the bearings within. When it is in park or neutral, everything is freewheeling.
    I had the same problem with a "new" re-man a while back - it was so much fun the first time to drop and get the tranny rebuilt with a "new" convertor, I got to do it again to replace the "new" convertor with a different one!!
     
  8. CB77GMC

    CB77GMC 1/2 ton status GMOTM Winner

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  9. Confedneck79K30

    Confedneck79K30 3/4 ton status

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    remember, new doesnt mean good...
     
  10. CB77GMC

    CB77GMC 1/2 ton status GMOTM Winner

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    Yea I know

    Has no slip at all pulls great. when gauges get here and I get them installed should tell me alot.
     
  11. CB77GMC

    CB77GMC 1/2 ton status GMOTM Winner

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    Does the 700r4 just sound different than a th350 :confused:
     
  12. djsblaze

    djsblaze 1/2 ton status

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    For what its worth, I bought a stage III Bowtie 700, and it does not whine...
     

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