4r100 tranny problem

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Mar 10, 2008 | 01:45 PM

countyman01

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4r100 tranny problem

I have a 01 2wd Excursion with the V10 and 4r100 trans. It currently has 78,000 miles. All was normal until yesterday when after taking off from a stop the trans shifted 1-2 normally but at the 2-3 shift the truck acted as though the brakes were on when the trans went into 3rd. Reverse, first and second still act normal. Anyone have any suggestions where I should start looking?

Many thanks for any help.

Jul 22, 2008 | 02:42 PM

nadrehctub

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From: wisconsin

i am also having the exact same problem with my 01 expedition anyone know what could be the cause. any help would be greatly appreciated !!

Jul 22, 2008 | 03:05 PM

countyman01

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Since my original post I got brave and pulled the trans out and I found that my trans still had the diode-style intermediate one way clutch in it and it had failed. So I updated it to the new style sprag type, cleaned and re-sealed everything, added a Trans-Go shift kit and it now works great.

Jul 25, 2008 | 07:37 AM

nadrehctub

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From: wisconsin

thanks for the quick reply !! not exactly the answer i was hoping for

but at least i know what to do. thanks again !!

Jul 26, 2008 | 01:30 AM

clarisa123

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countyman01,
Thanks for the info, I am having same exact problem. 01 Excursion, 7.3, 60k, 2WD. I have 2 left hands, any idea how much this would cost at a Ford dealer or private transmission shop?
Thx, H