Trans interchangeable
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4wd High
Joined: Aug 2023
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Trans interchangeable
I have a 04 f150 heritage 4.6l rwd the transmissions went out it has the two sensors I have a trans out of a 99f150 4.6l rwd I was told the new one has a single sensor and different pcm plug on harness I need to know if it’s possible to get the 99 trans in the 04
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,704
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From: SE Florida
There are too many differences between a pre-2003 and a post-2003 4R70W to make this swap possible without tearing down the trans and swapping several of the hard parts, plus most of the electronics. Anything is possible, this is not feasible.
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4wd High
Joined: Aug 2023
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hey mark thanks for the reply can u tell me what other transmission would be comparable for my truck because finding one affordable with the set up my truck has had really been impossible
Fleet Mechanic
Joined: Jul 2019
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Allegedly, if you have the “1L3P” code transmission, it’s a good bit easier to find a swap donor
The “4L3P” seems to be a 2004 Heritage truck only idea.
https://www.car-part.com/cgi-bin/search.cgi
The “4L3P” seems to be a 2004 Heritage truck only idea.
https://www.car-part.com/cgi-bin/search.cgi
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,704
Likes: 2,625
From: SE Florida
Allegedly, if you have the “1L3P” code transmission, it’s a good bit easier to find a swap donor
The “4L3P” seems to be a 2004 Heritage truck only idea.
https://www.car-part.com/cgi-bin/search.cgi
The “4L3P” seems to be a 2004 Heritage truck only idea.
https://www.car-part.com/cgi-bin/search.cgi
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,704
Likes: 2,625
From: SE Florida
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4wd High
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Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,704
Likes: 2,625
From: SE Florida
That says XL3P.
In 2003 the number of holes that the output sensor reads changed. Putting a pre-2003 trans in a 2004 truck is going to cause problems with the speed sensor. The trans will not shift right, if it shifts at all. I recommend not using that transmission, or if you need to use it, rebuild it to 2004 specs.
In 2003 the number of holes that the output sensor reads changed. Putting a pre-2003 trans in a 2004 truck is going to cause problems with the speed sensor. The trans will not shift right, if it shifts at all. I recommend not using that transmission, or if you need to use it, rebuild it to 2004 specs.
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4wd High
Joined: Aug 2023
Posts: 9
Likes: 6
That says XL3P.
In 2003 the number of holes that the output sensor reads changed. Putting a pre-2003 trans in a 2004 truck is going to cause problems with the speed sensor. The trans will not shift right, if it shifts at all. I recommend not using that transmission, or if you need to use it, rebuild it to 2004 specs.
In 2003 the number of holes that the output sensor reads changed. Putting a pre-2003 trans in a 2004 truck is going to cause problems with the speed sensor. The trans will not shift right, if it shifts at all. I recommend not using that transmission, or if you need to use it, rebuild it to 2004 specs.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,704
Likes: 2,625
From: SE Florida
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