Ignition control module problem. - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Everything Electrical & Electronic Have an electrical problem? Lighting, Alternators, gauges, DIC, HUD, etc? Post it here. Please post Audio problems in the Audio forum, and Engine control problems in the appropriate Mechanical forum for your year.

Reply
 
 
 
Thread Tools Search this Thread
Old 12-06-2009, 12:01 PM   #1
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Feb 2009
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
nightriderr is on a distinguished road
Default Ignition control module problem.

I have a 1994 SSEI and 2 years ago the ICM went out. Replaced it with NAPA icm and it ran perfect for two years. put car in garage for first time in months due to cold weather and next morning car would not start. Checked ICM with vantage scanner and 3x reference signal was dead. Replaced ICM again with NAPA icm ($157 ) and started right up. shut it off and closed hood and cleaned up tools half hour later started if again for good measure and ran fine. Next morning Wife tries to go to church and no start!!! Checked the 3x reference again and no signal!!!! ARRRRRGGGHHH!!!!!! Is there some reason that this is burning up so qwickly? Has anyone had this happen to them? Please HELP!!!


Frustrated!!
nightriderr is offline   Reply With Quote
Old 12-06-2009, 01:01 PM   #2
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

I believe there are problems with the PCM on your year. Might want to check on that.
Danthurs is offline   Reply With Quote
Old 12-06-2009, 02:15 PM   #3
Junior Member
 
Toddster's Avatar
 
Join Date: Aug 2005
Posts: 0
Thanks: 0
Thanked 1 Time in 1 Post
Toddster is on a distinguished road
Default

Alone with what Dan said; there are some possible grounding problems and corrosion you should look for. A poor ground and corrosion will cause premature failure in any electrical system and component.

If I where you I would tear down that whole area and clean All contacts. There is a ground wire under your ICM mounting plate. The plate itself is aluminum with metal mounting bolts going through it.

In fact check all ground points in your car >search for ground bus here> couple grounds inside each fender area>both ends of both battery cables....

Start with these suggestions and get back to us as you find things out

Last edited by Toddster; 12-06-2009 at 02:21 PM.
Toddster is offline   Reply With Quote
Old 12-06-2009, 02:19 PM   #4
Junior Member
 
Toddster's Avatar
 
Join Date: Aug 2005
Posts: 0
Thanks: 0
Thanked 1 Time in 1 Post
Toddster is on a distinguished road
Default

Quote:
Originally Posted by nightriderr View Post
Next morning Wife tries to go to church and no start!!!
I believe that is the whole reason why the new ICM failed.....she should have stayed home with you....hahahahahah

jk


I couldn't resist!

Todd
Toddster is offline   Reply With Quote
Old 12-08-2009, 08:36 AM   #5
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Feb 2009
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
nightriderr is on a distinguished road
Default

OK update on problem, have checked everything. Good ground, continuity of all wires good, all coils are within specs on hi and lo sides crank sensor good, cam sensor good,pcm good,and have installed a new premium module and it too has acted like it was no good. Still no spark. A mechanic was there and verified all procedures and tests before I installed the new mod. Any ideas?

More Frustrated!!
nightriderr is offline   Reply With Quote
Old 12-08-2009, 08:45 AM   #6
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

Well, you got me scratching my head here. How close is the battery cable run to the ICM? Small possibility it'* interfering with the ICM. Reroute and see if that helps any.
Danthurs is offline   Reply With Quote
Old 12-08-2009, 08:46 AM   #7
Junior Member
 
Toddster's Avatar
 
Join Date: Aug 2005
Posts: 0
Thanks: 0
Thanked 1 Time in 1 Post
Toddster is on a distinguished road
Default

Quote:
Originally Posted by Toddster View Post
Alone with what Dan said; there are some possible grounding problems and corrosion you should look for. A poor ground and corrosion will cause premature failure in any electrical system and component.

If I where you I would tear down that whole area and clean All contacts. There is a ground wire under your ICM mounting plate. The plate itself is aluminum with metal mounting bolts going through it.

In fact check all ground points in your car >search for ground bus here> couple grounds inside each fender area>both ends of both battery cables....

Start with these suggestions and get back to us as you find things out
Have you checked all your ground locations?

Have you looked at your ground bus areas?
Toddster is offline   Reply With Quote
Old 12-08-2009, 08:47 AM   #8
Junior Member
 
Toddster's Avatar
 
Join Date: Aug 2005
Posts: 0
Thanks: 0
Thanked 1 Time in 1 Post
Toddster is on a distinguished road
Default

Toddster is offline   Reply With Quote
Old 12-08-2009, 09:18 AM   #9
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

Usually I'd say crank sensor if 3x is missing. But it sounds like you are talking about it coming out of the ICM, not in. Is that right?
BillBoost37 is offline   Reply With Quote
Old 12-09-2009, 08:17 AM   #10
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Feb 2009
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
nightriderr is on a distinguished road
Default

Yes , there is no ICM signal coming out.

Frustrated

Napa is going to replace this ICM as Well.
nightriderr is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Ignition Control Module (ICM) plug test Danthurs Trouble shooting + Test Procedures 0 10-03-2009 04:21 PM
Dash intergration module aka body control module 2000BLKBONNEVILLE Everything Electrical & Electronic 0 09-10-2009 01:43 PM
Aftermarket Ignition Control Module; 1989 Olds Delta 88; 3800 Vin C 96Bonne124 1987-1991 1 05-10-2009 01:10 AM
Ignition Control Module Jagman04 Performance, Brainstorming & Tuning 8 07-31-2004 12:33 PM
Ignition Control Module A Bonnie Canuck 1992-1999 5 05-31-2004 10:43 AM


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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 06:58 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.