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Old May 24, 2009 | 07:03 PM
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Neck Snapping Shift

Okay oh great wizards of the Forum answers. Here is the short of it... shifts from 2 to 3 snap you like a launching F-18 or the Hornet. Then 3 to 4 has not the head jarring jolt, but a huge clunk.
What would be the cause and is it a complex repair or simple? I can drop the tranny pan and change filters etc.
98 Expedition 5.4 EB with 4wd and 139k.
Engine smooth as silk, transfer case operates as it should.

HELP!!!
As I'm sure this isn't good for the rearend or my hicky scared neck.

Don
 
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Old May 26, 2009 | 07:51 AM
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l-m tech
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From: duncan oklahoma
It could be a broken 2-3 accumulator spring.its designed to soften the 2-3 shift.
 
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Old May 26, 2009 | 12:13 PM
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Originally Posted by l-m tech
It could be a broken 2-3 accumulator spring.its designed to soften the 2-3 shift.
I-M Tech, thanks for the input. I'm thinking because of the high miles to go ahead and replace the valve body in the tranny. Does that include the sprinig you are talking about? Where could I find a diagram for this transmission and locate the spring you are talking about? If you have the time.

Thanks,
Don
 
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Old May 27, 2009 | 07:41 AM
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From: duncan oklahoma
when you remove the valve body the 2-3 accumulator is at the rear of the trans.the cover and spring will fall out.i would install a new accumulator piston also.and while your there replace the 1-2 accumulator and spring also.do some research on the net or maybe someone can help lead u in the direction to find the info.
 
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Old May 27, 2009 | 07:58 AM
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Originally Posted by l-m tech
when you remove the valve body the 2-3 accumulator is at the rear of the trans.the cover and spring will fall out.i would install a new accumulator piston also.and while your there replace the 1-2 accumulator and spring also.do some research on the net or maybe someone can help lead u in the direction to find the info.

Great! Thanks again. Can this all happen with the tranny still in and accessed through the pan/valve body? I found a source for parts, just now need to find a tranny diagram.

Thanks again!
Don
 
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Old May 27, 2009 | 09:38 AM
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You may get a diagram at wittrans.com
 
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Old May 27, 2009 | 09:45 AM
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Originally Posted by Lazy K
You may get a diagram at wittrans.com
Thanks! Got it!

Even found a video on how to repair.

Thanks again!

Don
 
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