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Heat Sink Grease OR Dielectric Grease?

Tiny
THEKIDINBUFF
  • MEMBER
  • 1996 BUICK REGAL
  • 109,000 MILES
I am replacing my ignition control module in my car. This is my second time replacing it because when I replaced it before, im guessing that it failed again because I didnt put any grease inbetween the connections. And it overheated. I wasnt aware of this till now. My question is what is the difference between Heat Sink Grease and dielectric grease? What one should I use, if not both, and where should I put the grease? Under neath the module and on the prongs the coils sit on or what? Any info would help. Thank you in advance.
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Monday, October 8th, 2012 AT 7:33 PM

4 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Dielectric grease is the recommended one and it should be put inbetween the connector and pins. It is for keeping out moisture as well.

Heat sink grease helps to provide better conductivity but might not be a good idea with so many terminals so near to each other.
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Monday, October 8th, 2012 AT 8:20 PM
Tiny
THEKIDINBUFF
  • MEMBER
  • 11 POSTS
Should I put it on the whole back of the module or just where the transistors are?
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Monday, October 15th, 2012 AT 8:09 PM
Tiny
THEKIDINBUFF
  • MEMBER
  • 11 POSTS
And im talking about putting heat sink grease on the back of the module
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Monday, October 15th, 2012 AT 8:12 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
They are supposed to be applied on the transistors.
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Monday, October 15th, 2012 AT 8:33 PM

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