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Noisy 700R4 when set to 2nd gear...

 
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Externet
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Joined: 22 Feb 2003
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PostPosted: Mon Jan 01, 2007 10:14 pm    Post subject: Noisy 700R4 when set to 2nd gear... Reply with quote

Hi.
The transmission is noisy only when the shift lever is set to 2nd gear, but not noisy when set to 'drive' and running trough 2nd Question
Any ideas?
Miguel
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clay
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Joined: 24 Nov 2002
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Location: South Carolina
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1972 Chevrolet Nova

PostPosted: Tue Jan 02, 2007 5:35 am    Post subject: Reply with quote

Is it a buzzing sound? Clay
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Externet
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PostPosted: Tue Jan 02, 2007 11:04 am    Post subject: Reply with quote

Yes, a buzzing sound.
Miguel
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af2
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Location: grassvalley, ca
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1933 Willys Coupe

PostPosted: Tue Jan 02, 2007 8:06 pm    Post subject: Reply with quote

Externet wrote:
Yes, a buzzing sound.
Miguel


Could be missing something, it sounds like the manual valve is between gears when in 2nd. Allowing fluid to engage another pack.
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rcdowns
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PostPosted: Wed Jan 03, 2007 3:25 pm    Post subject: Reply with quote

Mine does that too.
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af2
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1933 Willys Coupe

PostPosted: Wed Jan 03, 2007 9:42 pm    Post subject: Reply with quote

af2 wrote:
Externet wrote:
Yes, a buzzing sound.
Miguel






I Could be missing something, it sounds like the manual valve is between gears when in 2nd. Allowing fluid to engage another pack.
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10sec.et
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Joined: 29 Mar 2006
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Location: Houston,Texas
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1969 Oldsmobile Cutlass

PostPosted: Wed Jan 03, 2007 11:17 pm    Post subject: Reply with quote

af2 wrote:
af2 wrote:
Externet wrote:
Yes, a buzzing sound.
Miguel






I Could be missing something, it sounds like the manual valve is between gears when in 2nd. Allowing fluid to engage another pack.


mid to late 90s Dodge trucks would do that when the valve got worn and there was a updated valve to replace it. i know this is not a Dodge but as af2 said, it could be the manual valve.... possibly slightly out of position or worn enough to cause it to "flutter". i can check for TSBs tomorrow.

_________________
af2 wrote:
It seems we can look at our magical Balls and come up with a fix?

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clay
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1972 Chevrolet Nova

PostPosted: Fri Jan 05, 2007 8:30 pm    Post subject: Reply with quote

I've been gone for a few days, but the buzzing sound in the 700R4's can be related to the pressure regualtor valve. Mine does is mostly in reverse, but I don't think it is a rule for when exactly it occurs. Usually it occurs when the idle speed is pretty low, see if bringing the rpm's up slightly (around 900 - 1000 or so) makes it go away. I got an updated valve from my local trans shop and haven't put it in yet so I can't tell you if it will absolutley cure it or not. Clay
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rcdowns
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PostPosted: Tue Jan 09, 2007 11:31 am    Post subject: Reply with quote

My 700r4 only does it in D2 going down a steep hill. It is very bad if the trans is low on fluid, it is better if correctly full and almost gone if I over fill it.
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