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Auto 3.9L Dakota with a manual ECU

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Auto 3.9L Dakota with a manual ECU

  #11  
Old 04-27-2019, 09:28 AM
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Originally Posted by volaredon View Post
before 96 it should work just fine. I have mixed and matched trans and computers in Dakotas before and they have worked fine as long as you get one the same year or +/- a year or so, the listing above about what years work in what is pretty much right.
I have also used computers out of Dodge vans and full size pickups in Dakotas before, often same year will be same PN across vehicle lines back then.
but when I put a 94 computer in my 93, no, the 93 didn't like it.... I tried it twice and one was an Mopar perf version, the 93 truck really didn't like that one. I have a 93 brain in my 92 and have had for 60K miles.
Trouble is, on the 4 speed autos, with the wrong PCM, you don't get O/D, or TCC lockup. But, that is the ONLY drawback.
 
  #12  
Old 04-27-2019, 12:36 PM
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Originally Posted by volaredon View Post
before 96 it should work just fine. I have mixed and matched trans and computers in Dakotas before and they have worked fine as long as you get one the same year or +/- a year or so, the listing above about what years work in what is pretty much right.
I have also used computers out of Dodge vans and full size pickups in Dakotas before, often same year will be same PN across vehicle lines back then.
but when I put a 94 computer in my 93, no, the 93 didn't like it.... I tried it twice and one was an Mopar perf version, the 93 truck really didn't like that one. I have a 93 brain in my 92 and have had for 60K miles.
Well, yah, without swapping injectors, I'd expect a 94/95 to have fits in a 92/93 and vice versa ... injector flow rate changed in 1994.

RwP
 
  #13  
Old 04-27-2019, 12:37 PM
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Originally Posted by HeyYou View Post
Trouble is, on the 4 speed autos, with the wrong PCM, you don't get O/D, or TCC lockup. But, that is the ONLY drawback.
And that can be handled ... https://transmissioncenter.net/shop/...iring-diagram/

RwP
 
  #14  
Old 05-01-2019, 10:34 PM
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Originally Posted by 96360 View Post
Much cheaper options out there. But yes that ecm needs to go. An auto in a manual truck is fine, but vise versa is no beuno.
Cheaper options as in...? I saw RalphP mention a kit, but I have no clue what the kit he was referring to.

i did find an ECU for under $200, and a few on eBay in the $150 range. Still haven’t decided on what route to go but I definitely want to fix this for highway driving.
 
  #15  
Old 05-01-2019, 10:36 PM
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Originally Posted by RalphP View Post
is this what you were referring to? I checked the link and it sure is cheaper than a new ECM. Any tips on the options you’d purchase?
 
  #16  
Old 05-01-2019, 10:47 PM
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Originally Posted by RalphP View Post
Originally Posted by blackbeemer View Post
is this what you were referring to? I checked the link and it sure is cheaper than a new ECM. Any tips on the options you’d purchase?
I'd ask them. If not, I'd pick the suggested defaults of 44/OD and 52/LU.

RwP
 

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