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Old Nov 21, 2005 | 09:42 AM
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computer codes. differences?

im in need of a 5.8l ecm. the truck i pulled the motor out of no longer exists so i cant get the ecm outta it or get the code. i went to auto zone and looked up my ecm and there are 7 different ecm's to choose for the same year. can i just pick one and have it work? or should i pick the latest one to come out that year, cause from my understanding ford updated the programs threw out the year
 
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Old Nov 24, 2005 | 07:54 PM
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I would try the latest version. It should work OK. What year did the engine come out of?
 
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Old Nov 25, 2005 | 12:15 PM
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it came out of a 91 f250
 
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Old Nov 26, 2005 | 02:57 AM
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As long as it is a speed density computer to match your speed density (non-mass air) set-up, you should be ok.
 
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Old Nov 26, 2005 | 09:21 AM
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The transmission needs to match the computer as well. An E4OD computer will throw all kinds of codes if it is in a stick shift truck, and vice versa, if you have a stick shift computer in a E4OD truck, the transmission won't work properly.
 
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Old Nov 27, 2005 | 01:00 PM
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Oh yeah, that too
 
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Old Nov 27, 2005 | 04:48 PM
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yea but a computer wont care if it was made for a c6 or c4 and is them put into an AOD
 
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Old Nov 27, 2005 | 08:32 PM
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Originally Posted by wozxxx86
it came out of a 91 f250
91 would be OBD I and most code readers read OBD II which was standard in 96 but some started using it in 94. Smme of the better OBD II readers will read OBD I with adaptor cables but a lot of them will not.
 
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Old Nov 27, 2005 | 09:46 PM
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Originally Posted by wozxxx86
yea but a computer wont care if it was made for a c6 or c4 and is them put into an AOD
That is correct
 
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