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Fried Computer or Electrical Problem???

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Old Jan 28, 2007 | 08:38 PM
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Default Fried Computer or Electrical Problem???

Hi Everyone,
I have a friend with an ’85 vette. He was working on it, replacing the thermostat, and while trying to remove a hose, the screwdriver he was using slipped, and hit something near the throttle body, causing a spark. When he got in the car, he could smell something burning. The car will not start, and he has no dash lights, the windows and the radio will not work. I think he fried the computer, but I am not sure. Any advice would be appreciated.
BTW, I told him to disconnect the battery before he worked on the car, but he did not listen to me.
Thanks for your help,

Randy
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Old Jan 28, 2007 | 08:40 PM
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If you have a manual, find out what the affected circuits have in common.

I'd guess a fusible link.
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Old Jan 28, 2007 | 09:44 PM
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classic case of the old harness coming unglued. I would bet money the insulation where he hit had pulled back.

I am trying to think what would be hot with the key off.... and short of something on the alternator, I am at a loss.

This will require the FSM to fix. Plus a good DVM. May I suggest a Fluke? Either that or a tow to the nearest expensive Corvette shop.
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Old Jan 28, 2007 | 09:51 PM
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I have a FSM for my '90, but he does not have one for his '85. Would the circuits be the same? Any ideas on were the fusible link is located?

The biggest problem is that the car is in New Jersey, and I live in Maryland. Oh well, I guess a road trip is in order.

Thanks, Randy

Last edited by RandyJ75; Jan 29, 2007 at 12:00 AM.
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Old Jan 28, 2007 | 10:46 PM
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Tell your buddy to disconnect the negative battery terminal then look at the wire the screwdriver shorted out. Repair any wires with insulation damage by using electrical tape.

Remove the driver side gill/fender panel and behind/below the battery you'll see a bunch of Orange colored wires going to a stud with a nut holding them together. That's the battery jump start junction block. Make sure the negative battery terminal is disconnected before messing with the fusible links.

Your friend needs to verify if any of the fusible links are blown/melted. (Insulation on the fusible link will be discolored or melted).

If you look at the jump start junction block on your 90 it looks similar to the 85.

Last edited by Hooked on Vettes; Jan 28, 2007 at 10:50 PM.
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Old Jan 29, 2007 | 08:28 AM
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Originally Posted by Hooked on Vettes
Tell your buddy to disconnect the negative battery terminal then look at the wire the screwdriver shorted out. Repair any wires with insulation damage by using electrical tape.

Remove the driver side gill/fender panel and behind/below the battery you'll see a bunch of Orange colored wires going to a stud with a nut holding them together. That's the battery jump start junction block. Make sure the negative battery terminal is disconnected before messing with the fusible links.

Your friend needs to verify if any of the fusible links are blown/melted. (Insulation on the fusible link will be discolored or melted).

If you look at the jump start junction block on your 90 it looks similar to the 85.
Thanks, I thought thats were they are.
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Old Jan 29, 2007 | 08:50 AM
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First thing I'd do is check all the fuses.
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Old Jan 29, 2007 | 09:19 AM
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Originally Posted by rick lambert
First thing I'd do is check all the fuses.

That was the first thing he did.
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