Notices
1994.5 - 1997 7.3L Power Stroke Diesel  

2 computers underhood? why?

Thread Tools
 
Search this Thread
 
Old Nov 7, 2006 | 04:47 PM
  #1  
pud's Avatar
pud
Thread Starter
|
Posting Guru
Joined: Oct 2003
Posts: 1,955
Likes: 0
From: Quesnel, BC, Canada
2 computers underhood? why?

I noticed yesterday on my truck, there is the computer in the traditional spot in the firewall, and one on the drivers side fender above and forward of the traditional one. Is the one on the fender for the engine management? or is it even a computer? Scratching my head here
 
Reply
Old Nov 7, 2006 | 04:55 PM
  #2  
ForemanES's Avatar
ForemanES
Posting Guru
Joined: Apr 2004
Posts: 1,424
Likes: 0
From: AZ
The PCM is in the firewall

The IDM is on the fender
 
Reply
Old Nov 7, 2006 | 05:00 PM
  #3  
MADVAN's Avatar
MADVAN
Postmaster
Joined: Feb 2004
Posts: 3,266
Likes: 0
From: Levittown
IDM runs the PSD injectors
PCM does the rest.

Bill
 
Reply
Old Nov 7, 2006 | 07:09 PM
  #4  
cookie88's Avatar
cookie88
FTE Leadership Emeritus
20 Year Member
Liked
Joined: May 2001
Posts: 13,653
Likes: 6
From: Cabot, Arkansas
FTE Emeritus
The IDM (injector driver module) isn't a computer, it's an amplifier. It creates the necessary voltage (~115vdc) to fire the injectors.
 
Reply
Old Nov 7, 2006 | 07:35 PM
  #5  
MADVAN's Avatar
MADVAN
Postmaster
Joined: Feb 2004
Posts: 3,266
Likes: 0
From: Levittown
Originally Posted by cookie88
The IDM (injector driver module) isn't a computer, it's an amplifier. It creates the necessary voltage (~115vdc) to fire the injectors.
Thats correct. 3 different IDM's thruout the 7.3 PSD run. 94.5/02.
IDM#100=100v
IDM#110=110v
IDM#120=120v
Then you have the J. Servo mod that = 140v
I run the 140v. Motor runs better with it.

Bill
 
Reply
Old Nov 7, 2006 | 09:16 PM
  #6  
pud's Avatar
pud
Thread Starter
|
Posting Guru
Joined: Oct 2003
Posts: 1,955
Likes: 0
From: Quesnel, BC, Canada
ooooh. Going to have to search for the mod then...I remember hearing about the idm mod. Thanks.
edit: crap search is down.
What does the mod do? and how do you do it?
 

Last edited by pud; Nov 7, 2006 at 09:20 PM.
Reply
Old Nov 8, 2006 | 06:01 AM
  #7  
MADVAN's Avatar
MADVAN
Postmaster
Joined: Feb 2004
Posts: 3,266
Likes: 0
From: Levittown
IDM Mod Link
http://www.forgotton.net/diesel/idmmod/index.htm

Bill
 
Reply
Old Nov 8, 2006 | 06:45 AM
  #8  
Cuda_jim's Avatar
Cuda_jim
Post Fiend
Joined: Oct 2003
Posts: 5,903
Likes: 1
From: MICHIGAN
Originally Posted by pud
ooooh. Going to have to search for the mod then...I remember hearing about the idm mod. Thanks.
edit: crap search is down.
What does the mod do? and how do you do it?
Here's why the search doesn't work right now.
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

 Verdad Gallardo
story-1

Top 10 Fords at 2026 Carlisle Ford Nationals

 Joe Kucinski
story-2

3 Best / 3 Worst Parts of Modern Ford Ownership

 Brett Foote
story-3

10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

 Pouria Savadkouei
story-4

Every 2026 Ford Engine Explained

 Brett Foote
story-5

10 Ugly Ford Trucks That We Still Kinda Love

 Joe Kucinski
story-6

10 Things Every Truck Owner NEEDS (2026 Edition)

 Michael S. Palmer
story-7

Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

 Verdad Gallardo
story-8

Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

 Joe Kucinski
story-9

2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

 Brett Foote
Old Nov 8, 2006 | 11:04 AM
  #9  
pud's Avatar
pud
Thread Starter
|
Posting Guru
Joined: Oct 2003
Posts: 1,955
Likes: 0
From: Quesnel, BC, Canada
thanks jim, I read that yesterday too...seems everyone was in a panic lol.
MADVAN I searched google last night after posting and found that exact link lol, but thanks.
 
Reply




All times are GMT -5. The time now is 06:42 AM.

story-0
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.

By Verdad Gallardo | 2026-06-12 11:01:55


VIEW MORE
story-1
Top 10 Fords at 2026 Carlisle Ford Nationals

Slideshow: Top 10 Fords at 2026 Ford Nationals

By Joe Kucinski | 2026-06-09 11:10:08


VIEW MORE
story-2
3 Best / 3 Worst Parts of Modern Ford Ownership

Based on years of owning multiple modern Ford products.

By Brett Foote | 2026-06-09 10:53:36


VIEW MORE
story-3
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

SPONSORED: From muddy boots to rain-soaked cargo, these upgrades address some of the most common frustrations Ford truck owners face every day.

By Pouria Savadkouei | 2026-06-08 18:50:34


VIEW MORE
story-4
Every 2026 Ford Engine Explained

Here's everything you need to know about every Ford engine available for the 2026 model year.

By Brett Foote | 2026-06-05 12:58:01


VIEW MORE
story-5
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-6
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-7
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-06-03 11:38:36


VIEW MORE
story-8
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-9
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE