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I've burnt up at least two EEC's when I got into some very deep water/mud. I'm trying to figure out the best way to waterproof it, or at the very least keep water off it. Seems to me like some type of rubber boot or cover would work. Thought about relocating it inside my rig, but the idea of cutting and splicing all of those wires does not sound too appealing. So has anyone addressed this, and if so, what have you done..Thanks.
 

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I remember this came up awhile back and someone addressed Fireguy about making a extended harness to relocate the ECC inside the cab. I don't know what the outcome was though. Maybe serch fireguy.
 

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That was me. The issue was the availability of the female connector for the EEC. I don't think they make them.
 

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Satyr of the Midwest
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You could always desolder the connector from a bad PCM, solder extensions onto THAT, encase it however you want, and then get a female socket from another truck.
 

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I have this half:


I don't see enough need for the other side to make it worth my time. It's a couple thousand dollars for a case. But you can tear apart a junk computer and run wires out the back to the working computer. But its still just as much work as extending the stock harness.

I think a better solution is to stay out of the deep water :duh
 

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I've tried to stay out of deep water, but it doesn't take much from my experience to wreck the computer, so that why I'm trying to protect it.

What case is it that costs a couple thousand bucks?? I do have a spare computer that I guess I could tear apart and get rewired, just seems like a ton of work.

I have this half:


I don't see enough need for the other side to make it worth my time. It's a couple thousand dollars for a case. But you can tear apart a junk computer and run wires out the back to the working computer. But its still just as much work as extending the stock harness.

I think a better solution is to stay out of the deep water :duh
 

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Satyr of the Midwest
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What case is it that costs a couple thousand bucks??
He probably means a case of PCM connectors. He is correct that high-quality electrical sockets and connectors cost a butt-load of money, and especially so for low-demand items.

I do have a spare computer that I guess I could tear apart and get rewired, just seems like a ton of work.
It would be. Somewhere between 40 and 60 wires in all, depending on your PCM's hardware.
 

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I see, that makes sense.

He probably means a case of PCM connectors. He is correct that high-quality electrical sockets and connectors cost a butt-load of money, and especially so for low-demand items.



It would be. Somewhere between 40 and 60 wires in all, depending on your PCM's hardware.
 

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what about epoxy encapsulation? It would take a bit of work, but you could pot the whole ECU. The only exotic item you would need is a vacuum chamber. Any jewelery casting place should have the vacuum jar and pump.
 

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fishin' without dad
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Jeremy--- It will take a while but I told you we can just splice into the harness and ext. them. I have access to a VERY good soldiering iron. I have spent days(and I mean 3 or4 8-10hr days) soldiering motor connectors. If you can't figure anything else out I have a couple of other ideas.

i.e........ we could make a lexan box inside and outside the fire wall and seal it up and use a rubber boot around the harness.
 

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Can't you make a box to fit around the opening on the firewall? Drill a hole for the wires, silicone around them. Bolt the box to the firewall and seal it with silicone or rtv.

The hard part would be figuring out how to fit the connector through the box's hole without making it a giant hole. Maybe cut the box's hole out the size of the connector. Then slide it through and then cut a tupperware piece with a cut through it to slide around the wire. Silcone it to the box to cover the hole and fit around the wire harness.
 

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I've burnt up at least two EEC's when I got into some very deep water/mud. I'm trying to figure out the best way to waterproof it, or at the very least keep water off it. Seems to me like some type of rubber boot or cover would work. Thought about relocating it inside my rig, but the idea of cutting and splicing all of those wires does not sound too appealing. So has anyone addressed this, and if so, what have you done..Thanks.
i have been in some very deep water and never had a problem with mine! knock on wood !!! i wonder if my 89 is waterproof from factory! i am not really sure where its located.
 

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i dont really like how the ecm is half inside nd outside of our cabs. water is known to get throught that firewall seal. i say seal up the hole and make a waterproof enclosire underhood without overstretching the existing harness. VOILA!

and, not to hijack your thread, but what do you guys do to keep water out of the dizzy and other areas of the motor (besides the snorkel DUH)
 

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Enjoy my
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i dont really like how the ecm is half inside nd outside of our cabs. water is known to get throught that firewall seal. i say seal up the hole and make a waterproof enclosire underhood without overstretching the existing harness. VOILA!

and, not to hijack your thread, but what do you guys do to keep water out of the dizzy and other areas of the motor (besides the snorkel DUH)
certian mid 90's mustangs have a rubber boot that fits over the dizzy. That or a light coating of silicone around the dizzy cap.
 

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lets not get too crazy, the EEC has to cool itself. You can overheat it!

I don't think the EEC was designed for water, but it does very well. I think most problems are from......
Repetitive dunking (if you want a mud truck, go build one) :twak
Corosive mud (you need to rinse out the mud to prevent problems)

Try to clean the EEC, and the connector. Fill the female terminals with dielectric grease to prevent corrosion.



Same goes for any alternator, if you get mud in it, rinse it out with clean water to prevent corrosion.
 
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