1989 Vette - Distributor Ignition Module
Thread Starter
Intermediate
Joined: Jun 2012
Posts: 43
Likes: 0
From: Dania Beach Florida
1989 Vette - Distributor Ignition Module
Distributor Ignition Module - does this need a conductive gel as part of the install? I purchased a module from a local parts store, but I didnt
get one in the kit.
Thanks
get one in the kit.
Thanks
Pro
Joined: Aug 2010
Posts: 617
Likes: 17
From: Hamilton Ontario
Yes...use dielectric grease and spread it on the bottom plate generously. Just did mine a few weeks back
Melting Slicks
Joined: Aug 1999
Posts: 2,240
Likes: 42
From: Baltimore, MD USA
You want to use a heat sink thermal paste/grease. Usually
White in color. This allows the ignition control module to transfer
the heat to the distributor base.
Available at Radio Shack or most electronic stores.
http://www.radioshack.com/search/ind...+compound&sr=1
White in color. This allows the ignition control module to transfer
the heat to the distributor base.
Available at Radio Shack or most electronic stores.
http://www.radioshack.com/search/ind...+compound&sr=1
Le Mans Master
Joined: Mar 2010
Posts: 8,172
Likes: 17
From: Eugene Oregon
I believe in the Beer Fairy
St. Jude Donor '15,'19
You want to use a heat sink thermal paste/grease. Usually
White in color. This allows the ignition control module to transfer
the heat to the distributor base.
Available at Radio Shack or most electronic stores.
http://www.radioshack.com/search/ind...+compound&sr=1
White in color. This allows the ignition control module to transfer
the heat to the distributor base.
Available at Radio Shack or most electronic stores.
http://www.radioshack.com/search/ind...+compound&sr=1
Pro
Joined: Aug 2010
Posts: 617
Likes: 17
From: Hamilton Ontario
You want to use a heat sink thermal paste/grease. Usually
White in color. This allows the ignition control module to transfer
the heat to the distributor base.
Available at Radio Shack or most electronic stores.
http://www.radioshack.com/search/ind...+compound&sr=1
White in color. This allows the ignition control module to transfer
the heat to the distributor base.
Available at Radio Shack or most electronic stores.
http://www.radioshack.com/search/ind...+compound&sr=1
Le Mans Master
Joined: Mar 2010
Posts: 8,172
Likes: 17
From: Eugene Oregon
I believe in the Beer Fairy
St. Jude Donor '15,'19
Its more than likely thats what your car came with, I just changed mine out and the new one came with thermal heat sink paste. Dont take my word for it do a search here on the forum....if you feel the need to be vindicated. 
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Drifting
Joined: May 2005
Posts: 1,336
Likes: 12
From: Chicago Executive Airport, formerly known as Palwaukee
No-IL Events Coordinator
St. Jude Donor '12-'13-'14-'15-'16-'17
Yes, that is correct.
There are other items that will cause a hard to start/hot day/hot engine no start.
There are other items that will cause a hard to start/hot day/hot engine no start.
...WW
Thread Starter
Intermediate
Joined: Jun 2012
Posts: 43
Likes: 0
From: Dania Beach Florida
ICM is this the same as the ECM the Electronic Control Module. Also does anyone know were it is in a 1989.. Haynes manual shows it on the side of the radiator... Its not there.. Dont tell me its in the dash...
Thread Starter
Intermediate
Joined: Jun 2012
Posts: 43
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From: Dania Beach Florida
Ok.. I have check the right pass side .. I see were the heater core and the fender there is nothing.. one the side of the heater core housing next to the engine. There is two wire connector going in to the housing
could this be the ECM?? can you send me a pic of your ECM location ..
glewis954@aol.com
could this be the ECM?? can you send me a pic of your ECM location ..
glewis954@aol.com
Drifting
Joined: Aug 2006
Posts: 1,624
Likes: 2
From: Canandaigua New York
Just to clarify.. the ECM (Electronic Control Module) is not the same as the ICM (Ignition Control Module)..
The ICM is under the distributor cap.
The ECM (or computer) is under the right side of the dash.
If you are talking about the ESCM (Electronic Spark Control Module)..
It's on the right side of the blower motor housing,left side looking from the front....(at least in my 87)
The ICM is under the distributor cap.
The ECM (or computer) is under the right side of the dash.
If you are talking about the ESCM (Electronic Spark Control Module)..
It's on the right side of the blower motor housing,left side looking from the front....(at least in my 87)
Last edited by Keystring; Jul 31, 2012 at 09:41 AM.
Thread Starter
Intermediate
Joined: Jun 2012
Posts: 43
Likes: 0
From: Dania Beach Florida
Just to clarify.. the ECM (Electronic Control Module) is not the same as the ICM (Ignition Control Module)..
The ICM is under the distributor cap.
The ECM (or computer) is under the right side of the dash.
If you are talking about the ESCM (Electronic Spark Control Module)..
It's on the right side of the blower motor housing,left side looking from the front....(at least in my 87)
The ICM is under the distributor cap.
The ECM (or computer) is under the right side of the dash.
If you are talking about the ESCM (Electronic Spark Control Module)..
It's on the right side of the blower motor housing,left side looking from the front....(at least in my 87)
Thank you.. I have located all of the items.. ICM has been changed..
ESCM - ordering.. I am going to check for the ECM now.. Does the ECM
have to be programed if I purchase a new one???
Drifting
Joined: Aug 2006
Posts: 1,624
Likes: 2
From: Canandaigua New York
Drifting
Joined: May 2005
Posts: 1,336
Likes: 12
From: Chicago Executive Airport, formerly known as Palwaukee
No-IL Events Coordinator
St. Jude Donor '12-'13-'14-'15-'16-'17
No programming is necessary.
You will need to remove your PROM (chip) from your old ECM and install in the new one.
Very easy to do.
You will need to remove your PROM (chip) from your old ECM and install in the new one.
Very easy to do.
Thread Starter
Intermediate
Joined: Jun 2012
Posts: 43
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From: Dania Beach Florida
Race Director
Joined: Apr 2002
Posts: 10,036
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From: Anaheim CA
The ICM (Ignition Control Module) is inside the distributor.
You need to move the MEMCAL from the old ECM to the new one. It holds the program that runs your car. It's under a cover on the ECM housing held on by two 1/4" hex-head screws. It looks like this:
You need to move the MEMCAL from the old ECM to the new one. It holds the program that runs your car. It's under a cover on the ECM housing held on by two 1/4" hex-head screws. It looks like this: