It is the alternator....
Alternator is defective and needs replacing.
1. Suspect the belt is loose. Tighten it or use belt dressing. 2. Bearings are worn out on the alternator. Replace the alternator. 3. Poor workmanship on a rebuilt alternator. Replace the alternator.
It is probably the alternator that is whining - and not charging so you have run out of battery power and it won't turn over.
How do you replace an alternator on 2008 dodge Avenger? My car is making a whining noise and this may be the problem.
the bearings are probally giving out.
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 .
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Whining noises often come from the alternator or the steering pump. Check the power steering fluid in the pump (there is a dipstick on the pump), and have an AVR test done on the alternator. If the alternator is faulty, you are probably having battery problems as well. If the steering pump is low on fluid or is faulty, you probably are experiencing jerky steering from time to time.
It might make a whining or grinding noise, or it might not make any noticeable noise at all. All depends on what exactly with the alternator is malfunctioning. You're better off to have your alternator bench tested (which can be done free at any major auto parts retailer) than relying on sound to tell you if it's malfunctioning.
sounds like the alternator belt is loose, check it out and let me know.
The whining could be related to the alternator. Does the car have any electrical problems such as the battery drains and dies while car running, are your belt(s) tight? in good condition? It might be a belt tensioner or idler pulley that is causing the whining.