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Ecu Question

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Old Apr 13, 2007 | 02:02 PM
  #16  
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Originally Posted by subford
It should work OK but it may run a little rich until it warms up and the O2 sensors take over.
Yes. And I think once the computer has had some time to re-learn what the new motor likes even this will diminish.
 
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Old Apr 14, 2007 | 06:04 PM
  #17  
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I ran my truck on a 351 computer just to see what happened, and I wouldn't recommend it at all. It wouldn't idle, it pinged heavily, and ran grossly rich. You will be much better off with a 302 computer.
 
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Old Apr 27, 2007 | 10:33 AM
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where is the power steering switch located on the 5.0?
 
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Old Apr 27, 2007 | 11:00 AM
  #19  
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From: Easton,Ks
Originally Posted by 90F250351
where is the power steering switch located on the 5.0?
Here is a photo:
http://i54.photobucket.com/albums/g9...hotos/PSPS.jpg
 
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Old Apr 27, 2007 | 12:12 PM
  #20  
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just out of curiosity, why is everyone saying that i am going to have a big problem if my truck has an e40d tranny with the 302 i just put in?
 
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Old Apr 27, 2007 | 01:05 PM
  #21  
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Because the truck that the 302 EEC computer came out of the transmission is not computer controlled (AOD).
An E4OD is controlled by the PCM computer, changing the oil pressure, changing gears, clutch lock up and on and on.
 
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Old Apr 27, 2007 | 02:01 PM
  #22  
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Thats just great! Looks like i may have yet another problem. So what are the chances that my 1990 f250 has an e4od in it?
 
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Old Apr 27, 2007 | 02:22 PM
  #23  
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Originally Posted by 90F250351
So what are the chances that my 1990 f250 has an e4od in it?
Low. Does you truck even have overdrive? All the F250 and heavier trucks of this vintage I have seen had a 3sp auto(C6).
 
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Old Apr 27, 2007 | 02:23 PM
  #24  
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From: Easton,Ks
Originally Posted by 90F250351
Thats just great! Looks like i may have yet another problem. So what are the chances that my 1990 f250 has an e4od in it?
Look at the code under Trans on the door pillar or the numbers on the Trans tag. Post them and we tell you what you have.
Here is an image of the pillar label.
http://i54.photobucket.com/albums/g9...rd/IDLabel.gif
 
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Old Apr 27, 2007 | 02:32 PM
  #25  
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i will check when i get home in an hour and post. Thanks guys
 
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Old Apr 27, 2007 | 02:36 PM
  #26  
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Start by figuring out what transmission you have in the truck and what transmission was in the truck your computer came out of. LMC truck has a guide in the link following. The drawings in bottom right corner of the page will help you identify the trans based on the shape of and number of bolts in the trans pan. http://www.lmctruck.com/icatalog/fd/0009.asp

You can also look at the trans code on the safety compliance sticker on the driver's side door pillar. There will be a letter under "TRANS" such as G, T, or E. G = C6; T = AOD; E = E4OD; and later models might have U = 4R70W.

Do you have the program code off the 302 computer? It is a series of 3 or 4 letters and numbers that appear on the bar code sticker on the plug end of the computer. It may be something like E1A1 or C9Z. Post those here and someone will tell you what engine/trans combination the computer is calibrated for.
 
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Old Apr 27, 2007 | 04:30 PM
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the code on the pillar label under trans is "E"
 
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Old Apr 27, 2007 | 05:27 PM
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From: Easton,Ks
Originally Posted by 90F250351
the code on the pillar label under trans is "E"
That would be the E4OD.
 
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Old Apr 27, 2007 | 05:59 PM
  #29  
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so what do i now? use the 351 ecu?
 
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Old Apr 27, 2007 | 06:14 PM
  #30  
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From: Easton,Ks
Originally Posted by 90F250351
so what do i now? use the 351 ecu?
That is about your only option.
 
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