Coil Pack / Ignition Module full of green goo???

[SteveRacer]

I've got this coil pack that was leaking this light green goo/glue? When I seperated the coil pack from the module, the module is full of this stuff as well as this kinda foam stuff. Do they all look like this inside? Is this thing getting ready to go? This unit seemed to work fine before I blew up my engine. I used another one after I rebuilt the engine and now with 1000miles on the motor I'm haveing intermittent ignition troubles. I'll be cruising along just fine and it will sputter, backfire, and quit runing out of the blue, then it won't start. It will turn over but backfires. The next day it started right up and I drove around fine for a week and then it did the same thing. I don't get any error codes on the scanmaster. Now it's running fine again but I'm tired of getting stranded at 3 in the morning and haveing to wait on a tow truck.

 

[XLR8]

The module is full of "goo". I think that is to help cool the module. If the car runs poorly after it is hot, it could be the module. Mine threw a code 42 when it went bad. Try to find someonw with the Casper's coil pack tester.

 

[Ormand]

The module is full of green stuff, but when it's new, it's pretty firm, not "goo". Somewhere on this board there is a thread about "disecting" a module. Somebody dissolved the goo, one layer at a time, so he could get to the electronics, and "reverse engineer" the module. The green stuff is some kind of plastic potting compound, maybe to protect the electronic pieces/parts, maybe to "hide" them, maybe both.

 

[TurboTR]

Sounds like yours may have overheated somehow?

TurboTR

 

[TurboDave]

It's not supposed to be gooey. It should be fairly firm sorta like rubber. It's potting compound to cover the electronics. As was stated, yours likely overheated BADLY!

 

[VadersV6]

The potting epoxy is there to protect from the elements. If the outgoing resistance gets higher than it should be, and stays that way for a long time, things heat up and the epoxy breaks down. Mine is gooey, but it still works. Ill be needing a new one soon. Just because the epoxy has softened up, doesnt necessarily mean the components are bad yet.

 

[turbofrank]

Change both parts no longer good.

 

[TurboTR]

I think a leading cause of overheating like that could also be from a primary(s) being switched on too long, as in with a bad coil module perhaps.

TurboTR

 

[VadersV6]

I want to know why they placed the coils so close together. Couldnt the fields affect one another?