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Drivetrain Tech: 4G63 transmission, clutch, flywheel, driveshaft, gears, differentials, transfer case, shifter, etc.

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Old 07-08-2009, 06:51 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #1 (permalink)
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Manual Transmission Whining


My 97 whines when I downshift and also when in reverse. This happens when downshifting in any gear at any rpm, and reverse at any rpm. What causes this? Old trans fluid? Worn components?

Any help would be great.


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Old 07-08-2009, 07:01 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #2 (permalink)
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Reverse is a helicle cut gear...That's why it whines..As for your forward gears, they shouldnt whine, unless you have one of those dogbox trannys, where all the gears are cut that way, so you can speed shift the hell out of it, and not break..


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Old 07-08-2009, 07:21 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #3 (permalink)
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It should be a stock tranny...It hates to be shifted hard/fast.

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Old 07-08-2009, 07:27 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #4 (permalink)
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..That's what she said...
Those damm stock tranny's, what are we to do...
No, umm.. The stock tranny probly doesn't like to be shifted hard and fast, that's because it's stock..Ease off on her a little bit man..


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Old 07-08-2009, 07:41 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #5 (permalink)
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I'm no saying that I beat on it. I've tried it and failed.

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Old 07-08-2009, 07:46 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #6 (permalink)
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This guy failed to beat it.....Why the hell is my mind in the gutter tonight..

Check your fluid level..Also it might be time to rebuild, maybe the previous owner suceeded in beating it, but you get to clean up....


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Old 07-08-2009, 08:32 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #7 (permalink)
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Quote:
Originally Posted by Bud92gsx View Post
Reverse is a helicle cut gear...That's why it whines..As for your forward gears, they shouldnt whine, unless you have one of those dogbox trannys, where all the gears are cut that way, so you can speed shift the hell out of it, and not break..

You have it backwards my friend,The reverse gear is a straight cut gear and the whine is normal as all straight cut gears whine,your forward gears are helical gears.

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Old 07-08-2009, 10:28 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #8 (permalink)
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Quote:
Originally Posted by t25fury View Post
You have it backwards my friend,The reverse gear is a straight cut gear and the whine is normal as all straight cut gears whine,your forward gears are helical gears.
S*** I knew I was missing something(the correct order).


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Old 07-22-2009, 03:55 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #9 (permalink)
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The tranny fluid is not burnt or anything. Its still whinning, I'm getting new fluid this weekend. Anyone have any input on this??

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