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Old January 1st, 2014, 10:31 PM
adoporto's Avatar
adoporto adoporto is offline

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Exclamation EEC/ECM/PCM ??? Location

Ok I have searched this site as far as I could and maybe I'm just not doing something right. Where can I find info on the computer and how to replace it. I looked under forums, searched under forums, tech articles, and garage talk under engine, and nothing did I miss it somewhere?

Has anyone done a write up on what EEC/ECM/PCM what is the difference if any and what do they mean?

I have finally decided to replace the CPU after working and trying to get codes from truck and have come empty handed.

Can someone please lead me in the right direction.


1992 F150 XLT 4x4- 1995 donor motor 5.0/302
Mods: K & N intake, MSD ignition, Reroute PCV, Rubber Vacuum System, and Remote Start
Soon to come: Long tube Headman Headers
Old January 1st, 2014, 10:47 PM
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Booba5185 Booba5185 is offline

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Your PCM is on the far driver side firewall, down by the fender on the driver side. PCM is Powertrain Control Module, meaning it controls the engine and transmission. ECM is Engine Control Module, meaning it only controls the engine. EEC is Electronic Engine Control, which I think is the same as ECM.

89 F-150 5.0l AOD 2x4, 3.55 LS(+4), Converted to HO Roller, 3g Alt, GT40Ps, Y-pipe, Rerouted PCV, Dual Taurus E-fans, Explorer Injectors, Remote ICM, DIY Cold air, Rubber Vacuum System, Tranny cooler, Remote Tranny filter, Saginaw P\S swap, F350 Brakes, more.

Old January 8th, 2014, 09:09 AM
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Lostin90s Lostin90s is offline

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you need one for yout trucks engine,trans combo . ie. 302 with e4od ,

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adoporto , ASwaff400 , bikertrash3531 , Booba5185 , Bulldog74 , F150GT , glc , judd94 , KD-DET , lanejesse85 , Lostin90s , Old red and white , Russo2 , The Frankster

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