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ECU/PCM confusion

 
  #1  
Old 07-11-2019, 01:17 PM
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ECU/PCM confusion

Can anyone tell me what the differences are between the two computers? What do the each control? The one in the firewall vs the one on the fender? Thanks
 
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Old 07-11-2019, 01:45 PM
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We do not have an ECU in our trucks. We have a PCM and an IDM. The PCM is in the cab by the firewall and the IDM is above the fender liner on the driver side front.

The PCM is the brain for the truck and controls or monitors most goings on in the truck. The IDM is the controller for the injectors.

That is a very basic explanation and I hope it helps.
 
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Old 07-11-2019, 01:48 PM
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One on the firewall by the ebrake is the PCM, Powertrain Control Module, controls all things engine and transmission

The one on the drivers side inner fender is the IDM, Injector Driver Module, powers only the injectors, commanded by the PCM

Edit: Sous types faster
 
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Old 07-11-2019, 01:52 PM
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Cool, thanks. I need to find an ECU at a decent price. Any ideas?
 
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Old 07-11-2019, 01:54 PM
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Nope. As already mentioned above, we do not have an ECU on our trucks. So if u need an ECU then it's for a different vehicle than we can help you with in this particular subform. IDM or a PCM we can help you with
 
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Old 07-11-2019, 01:55 PM
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If you are speaking of an IDM, then see below. If you are looking for an ECU, please post up some details about the vehicle you are asking about...

RAE has been a good replacement IDM - 7.3L Ford Powerstroke Injector Driver Module

Hopped up IDM from RAE - https://www.remanautoelectronics.com...3L-IDM-HP.aspx

DTC is a good source for a hopped up IDM too - https://www.dieseltechchatt.com/pages/about-d-t-c

Swamps, RiffRaff, etc... all have IDM's, just choose your poison...

EDIT: Wesley was the fast one that time...
 
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Old 07-11-2019, 02:00 PM
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Sorry. I need a PCM.
 
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Old 07-11-2019, 02:03 PM
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rondogw if the '97 F250 4X2 extra cab in your signature and in your avatar picture is a diesel and is the vehicle you are asking about, post your question here:

https://www.ford-trucks.com/forums/forum170/
 
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Old 07-11-2019, 02:16 PM
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Oh crap. I thought I had. Fat fingers, little phone. LOL. Thanks again.
 
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Old 07-11-2019, 03:17 PM
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No worries Brother.
 
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Old 07-11-2019, 05:13 PM
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Originally Posted by Tim Hodgson View Post
rondogw if the '97 F250 4X2 extra cab in your signature and in your avatar picture is a diesel and is the vehicle you are asking about, post your question here:

https://www.ford-trucks.com/forums/forum170/
Originally Posted by rondogw View Post
Oh crap. I thought I had. Fat fingers, little phone. LOL. Thanks again.

Sous We have a new Moderator here that needs practice moving threads. . Iíll bet when he wakes up from his afternoon nap heíll see this and move it for you.
 
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Old 07-11-2019, 05:21 PM
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Originally Posted by Tim Hodgson View Post
rondogw if the '97 F250 4X2 extra cab in your signature and in your avatar picture is a diesel and is the vehicle you are asking about, post your question here:

https://www.ford-trucks.com/forums/forum170/
Originally Posted by Colorado350 View Post
Sous We have a new Moderator here that needs practice moving threads. . Iíll bet when he wakes up from his afternoon nap heíll see this and move it for you.
Dangit...

Truth be told I am on my tablet and cannot see his signature and the avatar is tiny.

rondogw I can move this thread to the appropriate sub-forum if you like?
 
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Old 07-11-2019, 06:07 PM
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Originally Posted by Sous View Post
Dangit...

Truth be told I am on my tablet and cannot see his signature and the avatar is tiny.

rondogw I can move this thread to the appropriate sub-forum if you like?
Sure. that'd be great. Thanks.
 
  #14  
Old 07-11-2019, 06:19 PM
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Moved to the 7.3L OBS forum.

Good luck to you rondogw
 

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