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Old 05-26-2013, 02:49 PM   #1
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Alternator question/help

I was driving yesterday and all of a sudden my volt meter dropped to 9 . .... When I got home I checked the voltage at the battery with and without the engine running and it was about 12 (not good). Upon checking this morning I found that the wire to the battery was completely off the bolt. The bolt had corroded off at the nut and was just hanging there.

Here is my question: the bolt coming from the alternator was too short to put back on the protective cover (pic below) so I did not put it on. Is that OK or not? How long can I run like this? I am guessing "not" or else they would not have one there in the first place. Once all connected back up the voltage with the engine running is about 14 as it should be. Anything I can do about besides a new alternator?

Thanks for any advice you can give......

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Old 05-26-2013, 05:51 PM   #2
Knows a couple things...

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It's fine to run without that cover so long as you don't bridge the connection to ground with a tool like a screwdriver. A non-issue when driving around, a potential issue when working in that area with tools. You could cover it with some red liquid electrical tape (vinyl insulation that is brushed on with the can's built-in brush) that is sold in most stores like Home Depot or any well stocked hardware store.


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Old 05-26-2013, 06:15 PM   #3
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Thank you for the answer, I just wasn't sure... I will get some of that liquid electrical tape my next trip to the hardware store.
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Old 05-27-2013, 07:13 AM   #4
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If the bolt was corroded and bad enough to separate, then it is a good bet that you have corrosion buildup in the wires too inside the insulation. You might want to think about replacing them ASAP.
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Old 05-28-2013, 02:05 PM   #5
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I had not thought about other corrosion...... So I will take a closer look, maybe even just get the wires as a "just in case"
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