Electrical connector corrosion - Dodge Cummins Diesel Forum
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post #1 of 10 (permalink) Old 03-08-2015, 12:21 PM Thread Starter
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Electrical connector corrosion

I have been working on restoring a car for the last few years and one of the problems is corrosion in the electrical connections. Here is a 40+ old wiring harness that I ran a test on with CLR for 20 minutes. I don't have any Evaporust, which is available at some parts stores like Advance, but I want to try that. The CLR may or may not wick up the wires and continue to work, although a good blast with electrical cleaner would probably douche it all out.

I post this result because I plan on pulling exterior plugs and cleaning them and then lubing them up with dielectric grease.

After all Confucious says, "Most fuel problems are usually electrical."

Here ya go, before...




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post #2 of 10 (permalink) Old 03-08-2015, 12:33 PM Thread Starter
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And this is after 20 minutes.

Thanks


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post #3 of 10 (permalink) Old 03-08-2015, 09:58 PM
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still looks like the corrosion did alot of damage to the copper.. thanks for the pics


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post #4 of 10 (permalink) Old 03-08-2015, 10:30 PM Thread Starter
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Quote:
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still looks like the corrosion did alot of damage to the copper.. thanks for the pics

I think some of the black that is left is old dialectic grease. I did a really quick test this morning before I left and didn't wipe it down the best.

I was pretty happy with the results.

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post #5 of 10 (permalink) Old 03-08-2015, 10:34 PM
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CLR is the calcium lime and rust remover right?
could you explain your cleaning process?


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post #6 of 10 (permalink) Old 03-09-2015, 07:41 AM
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fill bowl with CLR, insert plug. soak 20 minutes and remove, wash down with electrical cleaning spray...add grease ?????

hopefully this is it, as this is how I read the thread ???

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post #7 of 10 (permalink) Old 03-09-2015, 08:01 AM
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What about tinning with some solder to help with future corrosion issues, ,

2016 4x4 3500 Laramie CCLB LOST MY EXHAUST SO I HAVE AN 18 INCH RESONATOR AND EGRDELETE.. ALSO HAVE EFILIVE BY PPEI
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post #8 of 10 (permalink) Old 03-09-2015, 09:47 AM Thread Starter
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Yep, CLR is the stuff you can buy just about anywhere. It stands for Calcium, Lime, Rust. I buy it by the gallon at Home Depot and put it into a spray bottle. I use it for cleaning the bath tub. The scum just kind of melts off of everything. That way you don't use a scotch brite, like I used to, and take the shine off of both the tub and chrome fittings. It does have some fumes, though.

You could possibly tin the ends. With the old car connectors you can pull the ends out of the plug itself. I'm not sure that you can do it with the later model stuff. The dielectric grease should do a decent job of keeping the connectors clean.

Just fill a bowl with the CLR and soak the end in it is the procedure.

Advance auto carries Evaporust. It does the same thing but wouldn't be as caustic and it quits working as soon as you take the part out. I didn't have any at home.

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post #9 of 10 (permalink) Old 03-10-2015, 06:02 AM
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Are they not all just a mild acid to remove all oxidation? Vinegar or coin cleaner may do the same.

99 2500, Quad cab, 4x4 47RE, BD pressure lock on it, small BD 90/140 chip on the VP 44 connection plug, 17" 3rd gen wheels. 3.55 diffs. Ruenell front bumper and warn winch, Rancho adj shocks. 663k miles.
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post #10 of 10 (permalink) Old 03-10-2015, 07:59 AM Thread Starter
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Quote:
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Are they not all just a mild acid to remove all oxidation? Vinegar or coin cleaner may do the same.
As a matter of fact I did a brass powder measure, for a black powder rifle, with salt and vinegar. It took it down to the copper that was underneath and removed the green oxidation.

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