Joel Browning Posted July 25, 2015 Share Posted July 25, 2015 I have customer that has a F150 Heritage and he needs a transmission. Can any body tell me if the 4L3P DA and the 1L3P HA transmissions are interchangeable? Quote Link to comment Share on other sites More sharing options...
Buddy_M Posted July 25, 2015 Share Posted July 25, 2015 My parts catalog for an aftermarket reman show a single part number from them, and in the description it lists it replaces both of those tag numbers. I would assume they will interchange then, but makes me wonder what differences Ford had done between them. Quote Link to comment Share on other sites More sharing options...
Joel Browning Posted July 27, 2015 Author Share Posted July 27, 2015 I've been told there are no differences but I wanted to see if anyone had run into this before. Seems like the numbers might be the only difference. I'm going to suggest that he puts the transmission in and try it. Thanks! Quote Link to comment Share on other sites More sharing options...
lmorris Posted July 28, 2015 Share Posted July 28, 2015 Off topic here. Joel, any relation to Keith? Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted July 28, 2015 Share Posted July 28, 2015 None. Quote Link to comment Share on other sites More sharing options...
Joel Browning Posted July 28, 2015 Author Share Posted July 28, 2015 No relation Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted July 28, 2015 Share Posted July 28, 2015 But, the Browning clan is pretty big reaching far and wide. There is a Browning relative of mine in the active membership here though. you never know though. My family came out of Kentuckey. Quote Link to comment Share on other sites More sharing options...
Bruce Amacker Posted July 29, 2015 Share Posted July 29, 2015 My family came out of Kentuckey. Well, that explains a lot. 1 Quote Link to comment Share on other sites More sharing options...
Joel Browning Posted July 29, 2015 Author Share Posted July 29, 2015 I'm a member of the "New England" Browning clan, which is pretty large. Quote Link to comment Share on other sites More sharing options...
Joel Browning Posted September 30, 2015 Author Share Posted September 30, 2015 I just wanted to give an update... After installing the 1L3P into the heritage I found out that they don't interchange. Once I got the truck to 35-45mph the truck would shift to what felt like neutral. I got codes P0720 and P0722, both for the output shaft speed sensor. I looked up the part numbers for the sensors and they were different. I swapped the sensors and that didn't work. I looked at the tone wheel of the 4L3P that I took out and I could visibly see the teeth. The 1L3P has no teeth only drilled holes. So before I pulled the transmission back out I swapped the PCM from the truck I pulled the transmission out from, cut and programmed 2 keys and it fixed the problem. So far there has been issues with the PCM swap. Quote Link to comment Share on other sites More sharing options...
batmantech Posted October 1, 2015 Share Posted October 1, 2015 Way to make it work Joel! Quote Link to comment Share on other sites More sharing options...
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