What does the Ignition Control Module do? - Ford Truck Enthusiasts Forums



1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

What does the Ignition Control Module do?

Reply
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 01-05-2011, 06:58 PM
jv2290's Avatar
jv2290 jv2290 is offline
Senior User
Thread Starter
 
Join Date: Nov 2010
Location: North Central Ohio
Posts: 104
jv2290 is starting off with a positive reputation.
What does the Ignition Control Module do?

I have a 1992 F250 with a 5.0 & E4OD transmission. I've been having issues with starting it and I think it's the ICM. The ICM is the fender mount style, gray in color and the number on it is E7DF-12A297-A1A. My question is, what exactly does the ICM do? Are there anyways to test it? I've seen people post that they had them tested and they passed but were still bad. My truck has a very hard time starting only when it's cold out. It was 55 Fahrenheit outside the other day and it started decent. any temp above 65 it'll start great! When it's cold out it runs like crap until it warms up. It acts like it's on 2 cylinders. But once it warms up it's great! I've changed lots such as ECT, O2, IAC, plugs, wires, cap, rotor, coil, exhaust, air filter, TPS, EGR system, and the fuel system tested fine and the parts are new anyway including the filter. It acts like the coil is cutting out and the timing doesn't wanna sit still much. The idle changes randomly and I believe it's because of the timing moving around. I even believe I hear labor knocks / pings as is the timing is too high. I already advanced it and now turned it back down to 10* and still hear sometimes. Is this what the ICM does? I would really like to know EXACTLY what the ICM does just for reference reasons. Thanks In Advance!!


** Forgot to say that I checked for codes and KOEO I get 111 and sometime 625, and then continuous 512, KOER I get 111.

Last edited by jv2290; 01-05-2011 at 07:00 PM. Reason: Forgot to add info
Reply With Quote
  #2  
Old 01-05-2011, 09:19 PM
rla2005's Avatar
rla2005 rla2005 is online now
Post Fiend
 
Join Date: Oct 2005
Location: Illinois
Posts: 12,137
rla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud of
Quote:
Originally Posted by jv2290 View Post
I have a 1992 F250 with a 5.0 & E4OD transmission. I've been having issues with starting it and I think it's the ICM. The ICM is the fender mount style, gray in color and the number on it is E7DF-12A297-A1A. My question is, what exactly does the ICM do? Are there anyways to test it? I've seen people post that they had them tested and they passed but were still bad. My truck has a very hard time starting only when it's cold out. It was 55 Fahrenheit outside the other day and it started decent. any temp above 65 it'll start great! When it's cold out it runs like crap until it warms up. It acts like it's on 2 cylinders. But once it warms up it's great! I've changed lots such as ECT, O2, IAC, plugs, wires, cap, rotor, coil, exhaust, air filter, TPS, EGR system, and the fuel system tested fine and the parts are new anyway including the filter. It acts like the coil is cutting out and the timing doesn't wanna sit still much. The idle changes randomly and I believe it's because of the timing moving around. I even believe I hear labor knocks / pings as is the timing is too high. I already advanced it and now turned it back down to 10* and still hear sometimes. Is this what the ICM does? I would really like to know EXACTLY what the ICM does just for reference reasons. Thanks In Advance!!


** Forgot to say that I checked for codes and KOEO I get 111 and sometime 625, and then continuous 512, KOER I get 111.
You may have the wrong ICM installed. It should be black in color. Take a look at post#9 in this thread: http://www.ford-trucks.com/forums/10...-stranded.html

Some good reading here on ICMs: http://www.msextra.com/doc/ms1extra/...n-tfi-edit.doc
Reply With Quote
  #3  
Old 01-05-2011, 10:04 PM
jv2290's Avatar
jv2290 jv2290 is offline
Senior User
Thread Starter
 
Join Date: Nov 2010
Location: North Central Ohio
Posts: 104
jv2290 is starting off with a positive reputation.
I actually believe it's the original one. I've had it in there for the 4 years I've owned it. It was on the truck wneh I bought it. I never had these issues before. But thanks for that info! I'll check it out.
Reply With Quote
  #4  
Old 01-05-2011, 11:56 PM
jv2290's Avatar
jv2290 jv2290 is offline
Senior User
Thread Starter
 
Join Date: Nov 2010
Location: North Central Ohio
Posts: 104
jv2290 is starting off with a positive reputation.
Quote:
Originally Posted by rla2005 View Post
You may have the wrong ICM installed. It should be black in color. Take a look at post#9 in this thread: http://www.ford-trucks.com/forums/10...-stranded.html

Some good reading here on ICMs: http://www.msextra.com/doc/ms1extra/...n-tfi-edit.doc

The last link didn't work
Reply With Quote
  #5  
Old 01-06-2011, 01:49 AM
planehunter's Avatar
planehunter planehunter is offline
Elder User
 
Join Date: Aug 2010
Location: Vancouver, WA
Posts: 567
planehunter has a good reputation on FTE.planehunter has a good reputation on FTE.planehunter has a good reputation on FTE.
Ford ICM are very corrosion sensitive. Maybe you have a bad connection, or a crack in a connector affecting contact.
Reply With Quote
  #6  
Old 01-06-2011, 01:54 AM
deeznuts822's Avatar
deeznuts822 deeznuts822 is offline
Elder User
 
Join Date: Feb 2008
Location: ohio
Posts: 797
deeznuts822 is starting off with a positive reputation.
You could have a bad engine coolant sensor by the thermostat being that its temp related.
Reply With Quote
  #7  
Old 01-06-2011, 02:05 AM
jv2290's Avatar
jv2290 jv2290 is offline
Senior User
Thread Starter
 
Join Date: Nov 2010
Location: North Central Ohio
Posts: 104
jv2290 is starting off with a positive reputation.
Coolant sensors are new. I'm wondering if it's a dirty connection at the PCM. I just didn't know if the ICM is what controls the spark and timing. It seems like the coil cuts off. Strange thing is if I take off the starter relay wire and hold it in start it runs great! So I don't know haha
Reply With Quote
  #8  
Old 01-06-2011, 08:49 AM
rla2005's Avatar
rla2005 rla2005 is online now
Post Fiend
 
Join Date: Oct 2005
Location: Illinois
Posts: 12,137
rla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud of
I did a little more research, I do stand corrected. The correct ICM would be the gray Push-start version. The Black CCD version is for 1994+ trucks.

I apologize for leading astray on the subject.
Reply With Quote
  #9  
Old 01-06-2011, 08:52 AM
rla2005's Avatar
rla2005 rla2005 is online now
Post Fiend
 
Join Date: Oct 2005
Location: Illinois
Posts: 12,137
rla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud ofrla2005 has much to be proud of
Quote:
Originally Posted by jv2290 View Post
The last link didn't work
Try this: Index of /doc/ms1extra/MS_Extra_Hardware_Manual_files

Then scroll down and select "ford-Ignition-tfi-edit.doc"
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Need advice about ignition issue Bill2012 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 3 03-31-2015 01:15 PM
93 ranger sport 4x4 w/2.3L no start problem wp23n Ranger & B-Series 6 12-28-2012 05:59 PM
My 1995 F150 has lost it's spark jrb412 1987 - 1996 F150 & Larger F-Series Trucks 12 11-05-2010 04:15 PM
Code 18, Spout Grounded/spark word angle failure. Pleasr help! kc135cruechief Electrical Systems/Wiring 10 11-17-2007 08:53 PM
Ignition ECM problem 96 5.0 F150 TFIV ign :-X09 clstrfbc Fuel Injection, Carburetion & Fuel System 8 07-31-2004 02:11 PM


Go Back   Ford Truck Enthusiasts Forums >

Tags
1987, 1992, 46, 92, control, f150, fender, ford, icm, ignition, liter, module, mount, triton, truck

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump


All times are GMT -5. The time now is 11:12 PM.


This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Fordģ is a registered trademark of the Ford Motor Company.