ign module 92 lt1
Melting Slicks
Joined: Oct 2016
Posts: 2,024
Likes: 363
From: Central Alabama
There should be thermal conductive paste between the ICM and the heat sink.
Thread Starter
Cruising
Joined: Apr 2016
Posts: 11
Likes: 0
thanks Brian, no dielectric used, need to check on the paste
Thread Starter
Cruising
Joined: Apr 2016
Posts: 11
Likes: 0
Thanks again!!
Advanced
Joined: Dec 2016
Posts: 65
Likes: 3
Heat can cause the ICM to fail, the paste helps remove the heat by transferring it to the heat sink and away from the ICM. If just installed the ICM should run, but would fail quicker from heat. How quickly, I'm not certain.
Advanced
Joined: Dec 2016
Posts: 65
Likes: 3
Hopefully the new unit will last with the paste, it seems like a weak point in the system to me. I had changed mine a while ago to a pertronix ICM because I was changing the coil also and figured while I was at it I would do both just because the old ICM had miles on it, heat cycles etc. The unit did come with a tube of heat sink paste and I knew what it was for. Then another member informed me that the pertronix units had a bad reputation with the Buick community, so I guess I am in the wait and see zone. The car is strong for now, but for sure when it fails, you are done driving until repaired.
