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A bad belt, a bad regulator in the alternator or bad brushes in the alternator.
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∙ 11y ago
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What causes alternator not to charge battery?
Defective alternator or internal voltage regulator is bad.
What causes the alternator to not charge batterie?
Defective alternator or internal voltage regulator is bad.
What causes a 1998 Jeep to not charge Alternator OK?
Bad voltage regulator
What would cause no output from an alternator on an 88 monty Carlo besides the alternator itself?
The positive cable between the alternator and the battery has an open circuit or break. There also is a set of wires that plug into the alternator that turns it on when the car is running. Wiring problems here can cause a alternator not to charge on the vehicle but works fine on a test stand. Some cars the alternator light in the dash causes the alternator to kick in when the engine is started. A burned out light in the dash causes the alternator not to charge.
95 Buick Riveria - what causes the battery not to charge although alternator is good?
could be a bad battery
Dodge avenger battery dead?
Charge it, replace it,test the alternator,Charge it, replace it,test the alternator,
What alternator will charge at idle on a 350 Chevy?
Any alternator will charge at idle.
What causes alternator not to charge 1990 Volvo 240?
Worn brushes, bad Regulator, or Likely a bad connection or wiring.
Why wont alternator charge on a 1968 bug?
alternator is bad
Why does your car battery light flicker?
poor charge or intermitant charge from the alternator, also check condition of the alternator belt
How can I test my alternator to see if it is discharging my battery?
You can have the alternator tested free of charge at just about any major auto parts store. By the way, a bad alternator will not "discharge" a battery - the alternator's function is to provide the charge to the battery. If the alternator is faulty, then it is not providing the charge necessary to keep other components from discharging the battery. I had the alternator tested and it was charging. If the alternator has a bad diode, it will discharge the battery. I replaced the alternator and everything is fine.
What is the purpose of the alternator?
Charge the battery.
