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post #1 of 6 (permalink) Old 11-12-2012, 11:47 AM Thread Starter
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Question Ecu/ecm

I am switching the motor and transmission from a 2004 mazda 6 into the body of a 2003 mazda 6. they are identical as far as motor and trans and wiring harness go. my question is if i switch the ecu from the 2004 what all will i have to switch with it? im sure the ignition but what reads the key and things of that sort? All help and input is appreciated.
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post #2 of 6 (permalink) Old 11-12-2012, 12:46 PM
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Will not work w/o the ECM being burned to the ignition and the dash cluster.
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post #3 of 6 (permalink) Old 11-12-2012, 03:47 PM Thread Starter
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So it wont work even if I use the cluster and ignition from the car that the pcm goes to?
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post #4 of 6 (permalink) Old 11-12-2012, 04:03 PM
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wow, ummm idk then. Why do you want to use it that bad anyway? It may work.... never tried that before.
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post #5 of 6 (permalink) Old 11-12-2012, 05:30 PM Thread Starter
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Because I'm thinking that may be the issue if it's not wiring. So I'm trying to plan ahead. This car has been a nightmare but I'm determined to figure this out. I appreciate all your help though. I'm sure I'm confusing you just as much as I am myself
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post #6 of 6 (permalink) Old 11-13-2012, 01:15 PM
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