4R70W

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Jul 26, 2024 | 12:31 PM

ru4lindsay

Thread Starter

1st Gear

Joined: Jul 2015

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4R70W

I am swapping a 4r70w from 2001 f159sc 4.6l 4x4 (recently rebuilt) into a 2003 f150crewcab 5.4l 4x4. The 2003 was early production so the trans in it has single speed sensor like my 2001. It just has no 3rd gear. Time to shift and rpms take off and truck doesn't. Any bugaboos I should be aware of? Any advice would be greatly appreciated!

Jul 26, 2024 | 05:10 PM

Fomoko1

Moderator

Joined: Dec 2003

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From: Saskatoon, Saskatchewan

Moved to this forum.

Jul 27, 2024 | 12:04 PM

Hit Man X

Lead Driver

Joined: Sep 2002

Posts: 9,554

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From: North Texas

Who rebuilt it?

Jul 27, 2024 | 12:11 PM

RLXXI

Lead Driver

Joined: Nov 2020

Posts: 7,128

Likes: 1,945

From: Sportsman's Paradise

IIRC, the 4R70W is a 4x2 trans and the 4x4 trans is an E4OD for that year span. Non interchangeable.

Jul 31, 2024 | 02:01 PM

94F350_7.3

Cross-Country

Joined: Jun 2024

Posts: 61

Likes: 27

4R70W and E40D are totally different transmissions. There are a whole host of reason why it’s not shifting, will need to have a transmission pressure gauge to check line pressure.

Jul 31, 2024 | 03:23 PM

BareBonesXL

Fleet Mechanic

Joined: Jun 2023

Posts: 1,381

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From: WA

Quote:

Originally Posted by ru4lindsay

I am swapping a 4r70w from 2001 f159sc 4.6l 4x4

into a 2003 f150crewcab 5.4l 4x4

Quote:

Originally Posted by RLXXI

IIRC, the 4R70W is a 4x2 trans and the 4x4 trans is an E4OD for that year span. Non interchangeable.

Quote:

Originally Posted by 94F350_7.3

4R70W and E40D are totally different transmissions

Sounds like people are saying that the "2001 f159sc 4.6l 4x4" is either not a 4x4 or that it is and the transmission is not a 4R70W. Probably need to figure that part out pretty quick.

Aug 1, 2024 | 01:54 PM

joe7865

5th Wheeling

Joined: Oct 2006

Posts: 34

Likes: 5

Quote:

Originally Posted by ru4lindsay

You've got a transmission swap going on! That's a big job.

First, congrats on the rebuild. Now, let's tackle the issues. Since both trucks have single-speed sensors, that's a good start.

For the 3rd gear problem, I'd suggest checking the transmission computer calibration, wiring harness differences, solenoid pack compatibility, and torque converter compatibility with the 5.4L engine.

Also, ensure the transmission mounts and brackets are compatible. You might need to fabricate or modify some brackets to fit properly.

Lastly, test the transmission thoroughly before putting the truck back on the road.

Good luck, and let me know if you need more help!