1997-2006 Expedition & Navigator 1997 - 2002 and 2003 - 2006 Ford Expedition and Lincoln Navigator Discussion

2003 Exp 5.4 4X4 is 4R100 interchangable for 4R70W?

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Old 04-17-2020, 10:53 PM
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2003 Exp 5.4 4X4 is 4R100 interchangable for 4R70W?

Junk yard seems to have sent me the wrong one - I was sure I gave the transmission model #.4R70W. They sent a 4R100 I think. Are they interchangable or do I have to see if they will take it back. Shipped from TX to CT so I'm sure the shipping will kill me.
 
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Old 04-18-2020, 08:49 AM
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To use the 4R100 you need to change the rear mount, the wiring harness, and the computer. You would also need to shorten the rear driveshaft and lengthen the front driveshaft.
Can you post a photo of the suspected 4R100?
 
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Old 04-18-2020, 10:00 AM
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All the '03s Expeditions got the 4R70W. So if you gave them the year and model of the vehicle they should've shipped you a 4R70W. ( The Lincoln Navigator got the 4R100 tranny....) I would call and discuss it with them. They may just ship you a 4R70W at their expense. You never know till you talk to them.
 
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Old 04-18-2020, 11:04 AM
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Photo's to ID Transmission


Casting # on what Junkyard shipped

What Junkyard Shipped

This is what's in my 2003 Expedition 4x4 5.4 L It is the 4r70W

Pan of what Junkyard shipped

ID tag on what Junkyard Shipped

This is what got shipped - thanks for any help IDing what I was sent.
I will call Junkyard and see what they can do for me.
Thank you all for your help.
Ed
 
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Old 04-18-2020, 11:29 AM
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Yeah 4R70W pan does not have a drain plug. The 4R100 pan does. The earlier ( 2001-2002 ) 4x4 Expeditions did use the 4R100, but in '03 they used the 4R70W only ( on both the 4.6L and the 5.4L motors....) . The '03 Navigator did use the 4r100 though.
That always leads to a lot of confusion.
 
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Old 04-18-2020, 10:14 PM
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Those photos are of a 4R100, not a 4R70W.
 
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Old 04-18-2020, 10:45 PM
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Mark,
Thanks - that is what I thought looking at the diagram in the shop manual. There is a little cutout on the left hand side of the flange that mates to the transfer case on the 4R100 that isn't there on the 4R70W. I haven't looked at the pan again to find the plug but I'll do that tomorrow.

Good news is the junkyard in TX that sold it to me asked that I send photo's and invoices to them. Sounds like they may be willing to help. If it works out I'll let people know.

Ed
 
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