C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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Old Jun 24, 2008 | 05:02 PM
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Default Need Help!!!

hey im new to the forums and i own a 82 l83. im having some issues with the electrical system. after a drive at times i shut down the car and try to start it up again and it wont start..on crank at all from the starter..any ideas? im not to familiar with the electrical system of the c3. does anyone have a similar problem if not could advise me on going about this problem?
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Old Jun 24, 2008 | 05:14 PM
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Couple ideas...but first of all, welcome to the forum.

First, check the connections at the battery to make sure they are clean and tight.

Heat seems to be part of the problem. Next time it's hot and won't start, try tapping on the starter with a hammer. You won't hurt it...just give it a few good whacks. Then try to start it. If it fires right up then you need a starter.

Next inspect the wiring at the starter. You're looking for frayed wires or corrosion.

Also, check the main ground coming off of the battery while you're under the car.
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Old Jun 24, 2008 | 05:26 PM
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are there inline fuses or relays going from the battery to the starter that cuz rust out?
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Old Jun 24, 2008 | 05:30 PM
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Originally Posted by c3fanatic
are there inline fuses or relays going from the battery to the starter that cuz rust out?

No fuses, just fusible links. Two red wires going down to the starter, which kind of a white capsule on the starter end. The section of wire from the capsule to the starter IS the fusible link, and they can blow...

...however, if the car starts when it's cold then the links have not blown.
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Old Jun 24, 2008 | 05:49 PM
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Welcome,

Check the bolt that goes from the starter to the solenoid. If this bolt is loose, it will not crank when hot. It opens up when hot and you get nothing. If you get someone to turn the key while you look, it will probably be arcing. It took me a while to fiqure mine out.

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Old Jun 24, 2008 | 06:31 PM
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ok ill check that out..
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Old Jun 24, 2008 | 09:41 PM
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Heat shield around the starter fixed this for me. Headers were too close to the starter.
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Old Jun 24, 2008 | 11:51 PM
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yeah mite do that as well...where can i get one of those?
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Old Jun 25, 2008 | 01:40 PM
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Default starter solenoid

Originally Posted by Attfay Elleybay
Heat shield around the starter fixed this for me. Headers were too close to the starter.
Better yet, if you're running headers, place them in the trash and mount a set of stock cast iron manifolds.
I fought this problem for years. The headers would cook the starter solenoid. I fab'd up a crude wrap around the solenoid (ceramic insulation under a hi-temp mesh). Looked trashy but did help quite a bit.
But this problem went away entirely when I went back to stock manifolds. Now I no longer need the heat shield, and no starter problems.
(And unless you're running an impressively modified engine, headers don't bump your output enough to feel it.)
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Old Jun 25, 2008 | 11:41 PM
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i do have headers on this motor..where can i get a heat shield?
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