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The alternator doesn't care. It provides power no matter if the battery is good, weak, or not even there.
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∙ 16y ago
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Does alternator on weak battery affect the RPM?
If you have the wrong size battery in a Cadillac with the northstar will it effect the alternator voltage?
Is your battery weak if your voltage gauge moves down?
Weak battery, or weak alternator.
What causes headlights to dim while driving?
Your battery is weak, or your your alternator is not charging battery.
Battery light comes on and goes off while driving?
You possibly have a loose alternator belt or the alternator is weak. Check the voltage at the battery with the engine running. It should be 13.5 ? 16 volts. Any less and the alternator is weak and needs replacing. Also make sure the connections at the battery are clean and tight.
Will a car start if the alternator is going out?
It will start if there is enough charge in the battery to turn the engine over. However if the alternator is weak then the battery will not be charged fully.
Why does the car stall when lights are on?
a weak battery, weak alternator , just a low idel speed or bad ground
Why does your lights dim when you hit the brakes?
Weak battery? not holding a sufficient charge Alternator not charging battery sufficiently?
The Volt light is on in 1999 Monte Carlo and it will not start?
Dead or weak battery? Alternator not charging battery properly?
What causes a lazy starter on a 1992 Nissan pickup?
weak battery or bad alternator.
Why does Ford Mondeo sometimes not start without a jump?
weak or faulty battery, faulty alternator (or slipping alternator belt causing battery not to charge) or faulty starter motor
Does the dash battery bulb effect the alternator charge?
If your battery is not being charged , the battery light will come on in your dash
Can a weak battery cause the alternator to make a loud whining noise?
I would say probably not, the reason your battery is weak is I reckon due to a fault with your alternator. It is obviously not producing sufficient power (electricity ) to keep the battery charged. The whining noise is probably caused by worn-out bearings. A replacement or re-conditioned alternator should cure the problem .
