ICM's keep dying on me
ICM's keep dying on me
1999 3.8 v6 Manual
I've been burning through some ICM's since i got a service engine light last year that indicated a multiple cylinder misfire problem. The first time i though it burned up because it didn't have enough heat compound between the heat sink and module but now I'm starting to suspect something else is happening here. Luckily its not costing me anything since the part has a lifetime warranty but these thinks are only lasting a few months each. does anyone know what could cause this problem?
I've been burning through some ICM's since i got a service engine light last year that indicated a multiple cylinder misfire problem. The first time i though it burned up because it didn't have enough heat compound between the heat sink and module but now I'm starting to suspect something else is happening here. Luckily its not costing me anything since the part has a lifetime warranty but these thinks are only lasting a few months each. does anyone know what could cause this problem?
Overdrive Member
Joined: Apr 2010
Posts: 3,354
From: Spanaway, WA
When you keep burning these things up I have found that there are 2 main causes. The first is the heat compound, you dont need alot of the stuff but you need enough to give a thin coat to the underside of the module.
The other reason is bad grounds. If your module does not have a good and steady ground it will use other means to ground itself and that stresses the internals. This module gets a ground through the housing and through the harness. You need to make sure that the engine block is grounded good and secure and there is no paint between where the module mounts to the block (use heat compound here so the module and steel do not react to one and another) Also you may check where the harness ground is going and make sure that has not been broken or disconnected. You can find schematics online or in a Haynes/Chilton book.
Massey
The other reason is bad grounds. If your module does not have a good and steady ground it will use other means to ground itself and that stresses the internals. This module gets a ground through the housing and through the harness. You need to make sure that the engine block is grounded good and secure and there is no paint between where the module mounts to the block (use heat compound here so the module and steel do not react to one and another) Also you may check where the harness ground is going and make sure that has not been broken or disconnected. You can find schematics online or in a Haynes/Chilton book.
Massey
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