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> Common Issues With The Volvo 240
grendel1960
post Apr 3 2017, 07:24 AM
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it might be worth checking the exciter circuit for the alternator, this is generally fed from the instrument lights, to get a 12v supply to the alternator, if the bulb blows on the charging circuit, then you dont get any alternator output, this connection also feeds the instrument lights, so maybe you have fried that circuit, which would explain why your battery is not charging, and why the battery is going flat. the charging can be cured by hooking a wire in to the battery from the exciter circuit, but dont leave it connected as that will flatten the battery. the alternator warning light is a funny one, it is normally at 12v, but once the alternator start supplying power, it gets 12v from both sides of the circuit and the light goes out (this is also the circuitry that tests the instrument bulbs so they come on when you turn the key,and then go out once the engine has started.
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danielm85948
post Apr 4 2017, 05:10 PM
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QUOTE (carprice211 @ May 2 2015, 01:56 AM)
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