C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Replacing wires at starter

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Old Jun 11, 2017 | 01:13 PM
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Default Replacing wires at starter

So I finally took my C4 for its first drive from where my Uncle had it and drove it home. Ran pretty good, idles a little rough. Thought I took care of the valve cover leaks, but passenger side was still leaking. Anyway that coupled with the obscene amount of oil coating everything already decided to cause a small fire. Completely melted the connector and plastic end of my cooling fan temp sensor, melted every last bit of insulation off the wire that runs to the connector and melted the insulation on the 3 main wires that tie into the large post on the starter that are crimped into that ring connector. So the wires after the little black tube that they all have are most of the way exposed. Are these just fusible link wire? Could I just cut them out, splice new wire in and just crimp them into new ring terminals or are there better options?
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Old Jun 11, 2017 | 01:20 PM
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Originally Posted by duowing
So I finally took my C4 for its first drive from where my Uncle had it and drove it home. Ran pretty good, idles a little rough. Thought I took care of the valve cover leaks, but passenger side was still leaking. Anyway that coupled with the obscene amount of oil coating everything already decided to cause a small fire. Completely melted the connector and plastic end of my cooling fan temp sensor, melted every last bit of insulation off the wire that runs to the connector and melted the insulation on the 3 main wires that tie into the large post on the starter that are crimped into that ring connector. So the wires after the little black tube that they all have are most of the way exposed. Are these just fusible link wire? Could I just cut them out, splice new wire in and just crimp them into new ring terminals or are there better options?
If I live much longer I will see all this **** a 3rd time ! LOL What did I do to deserve ??? Al kidding aside - those are fusible links and must be replaced accordingly. All fuses, regardless of type, are designed to prevent fire(s). So act accordingly !!!
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Old Jun 11, 2017 | 01:35 PM
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Your wires have been comprised by an electrical fire.


If it were me, with your wallet, I'd replace the whole wire harness for the starter. Cutting a splicing will just beg for more issues.


Get a power washer and clean off the oil as it can (and apparently will) help create a electrical problem.
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Old Jun 11, 2017 | 01:41 PM
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Originally Posted by billschroeder5842
Your wires have been comprised by an electrical fire.


If it were me, with your wallet, I'd replace the whole wire harness for the starter. Cutting a splicing will just beg for more issues.


Get a power washer and clean off the oil as it can (and apparently will) help create a electrical problem.
Thanks for the info. Already ahead of you on the power washer. Went to town on it. Standing on jack stands right now. I think I've taken care of the valve cover leak. At least I hope so. I pulled the passenger side cover back off to see and found what I assume were the old metal spacers from the previous gasket that I failed to notice/remove. I've spliced in a new connector for the cooling fan as for some reason O'Reilly's had that. I actually would like to replace that part of the harness, but I'm not sure where I can find that?

Well I at least redid all the wiring down there. Found some 14 gauge fusible link wire at O'Reilly's. Cut out the old fusible links and made new ones. I see they were a mix of 12 and 16 gauge. So when I get some 12 I'll redo that one. Undecided if I want to remake the 14s into 16s. I might though. Anyway here's some pictures.







Last edited by duowing; Jun 11, 2017 at 07:29 PM.
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Old Jun 12, 2017 | 10:51 AM
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Yeah, you really don't want to try to save any of that.

Get yourself a fresh set and clean up all the connection. Super cheap piece of mind.
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Old Jun 12, 2017 | 11:13 AM
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OP - your links look to be those of likely an '85 or maybe an '84 where all links run from the starter so it's very important to use appropriate sized links etc. Physical "appearance" of the links shouldn't be confused for sizing/amperage.

What year is the car and do you have a FSM (Factory Service Manual)?

There's potential ways to maybe use a "buss" to replace and improve the distribution scheme but it's likely a decision based upon personal preference and prior damage.
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Old Jun 12, 2017 | 11:43 AM
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Car is an 85. I actually wouldn't mind rerouting them all from the starter. I actually ordered 16 and 12 gauge to replace them. I do have the FSM . Everything behind the labeled black connectors was fine. I taped them with different color tape so I knew which ones were supposed to be 12 and 16. So it's something I'm not too worried about as far as replacing. I don't solder any of these. I have a nice ratcheting crimper. I use the non-insulated butt connectors, crimp them, then use heat shrink. I'll have to see how those are routed to see where I can redirect.

Last edited by duowing; Jun 12, 2017 at 11:43 AM.
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Old Jun 14, 2017 | 02:40 PM
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you are very lucky you still have a car. electrical issues have burnt more cars than Obama's clunker law.
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Old Jun 14, 2017 | 02:53 PM
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Originally Posted by duowing
I taped them with different color tape so I knew which ones were supposed to be 12 and 16.
Tape won't survive in that hot, oily environment, so I hope your heat shrink sleeving will protect the connections. Nice workmanship!

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