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OK to unplug control module?

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Old Jul 21, 2018 | 08:01 PM
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Default OK to unplug control module?
If I can unplug the control module (on the firewall) it will enable me to move some of the harness a bit so I can reach the back plug coil for replacement. I would disconnect the battery before attempting to do so. Is it OK to do this? Any precautions?
(2004 Triton engine)
Paul
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Old Jul 21, 2018 | 10:29 PM
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Default Most of us do this and remove pcm bracket also
mark your plugs on pcm just so to don't miss hook them
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Old Jul 22, 2018 | 01:20 AM
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Be aware that your ECM will have to relearn its parameters and operating ranges due to the memory loss from being unhooked. This is completely normal but expect an unusually low idle and the truck possibly dying once or twice when idling down during this process. Will right itself after a few drive cycles.
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Old Jul 22, 2018 | 09:29 AM
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I would just un-bolt it from the firewall and lay it aside
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Old Jul 22, 2018 | 11:29 AM
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Makluco says you can :

i didn't need to or to even move it on my 4.6l 2valve
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Old Jul 26, 2018 | 12:10 PM
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Originally Posted by techrep
I would just un-bolt it from the firewall and lay it aside
It won't help. I pulled the ECU and the bracket when I changed mine. Made the repair much simpler than the driver side.
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Old Jul 26, 2018 | 01:03 PM
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I unbolted mine also.. but, did not unplug it..just zip tied it out of the way and pulled the bracket. It makes it a lot easier.
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Old Jul 26, 2018 | 01:46 PM
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Originally Posted by techrep
I unbolted mine also.. but, did not unplug it..just zip tied it out of the way and pulled the bracket. It makes it a lot easier.
Well... Why didn't I think of that hahahahaha
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Old Jul 27, 2018 | 05:57 AM
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Originally Posted by Jojodapyro
Well... Why didn't I think of that hahahahaha
cause you thought it would not help..
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