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Had a Radio put in my 1992 318is Bmw recently. Tech said I needed another ground for the Radio ( he’s the Tech ) so I said go ahead.
On the way home the cluster started blinking and by the time I get home I had a rotten egg and sulphur smell when I got home. I looked around under the hood and found it was coming from the trunk. Battery was leaking acid and the Battery was smoking and was hot. I let the car cool but the Battery stayed hot!
Replaced the battery three times to the same out come. What do you think?
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Sounds like the battery is being overcharged or something wrong with the radio install.
Was this problem there before the radio install?http://www.ericthecarguy.com/faq/solving-automotive-electrical-problems
unhooked the Radio and undid the ” Extra Ground” the tech istalled but the problem is the same. Havent removed the Alternator yet but will this weekend.
Test battery voltage with the engine running. I suspect you will find something significantly higher than the 14 or so volts that should be there. At that point, I would say have the alternator tested OFF the vehicle to determine if the problem is the alternator it’s self, or a wiring issue caused by the radio install.
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