Take it to an auto parts store and have them perform a bench test on it.
A bad alternator will make whats called a whirring noise. It could also make a low growl. This is just the bearings going bad. If your alternator is not supplying any power, it has nothing to do with noise typically.
If it is makeing a noise or is not putting out at least 13.5 volts it is bad. Take the car or the alternator to an Auto Parts store and have them load test the alternator to be sure.
If bearings go bad on a alternator/ will make a grindind noise or long squilling noise.. but if only electronic's inside alternator are damage no noise wil be heard
Possible loose battery cables..make sure they're properly fastened..loose cables can restrict electric flow to car. Also a bad or Goin bad alternator..check belt as well before replacing alternator. Make sure no faulty wiring or connections.
It sounds like the alternator is bad. If the alternator is bad the battery will not hold charge when running
If bearings go bad they will "squeal"
A bad belt, a bad regulator in the alternator or bad brushes in the alternator.
The bearings might be bad in the alternator.
No
No, not an alternator itself. A slipping belt driving the alternator and the water pump could though.
Hello, There are many symptoms of a bad alternator that you should pay attention to: If your alternator is not working properly it might affect how the alternator belt is turning. An alternator that is not working properly will make an audible sound. Removing the alternator belt can confirm if noise is coming from the alternator. Another symptom is if anything electrical slows (windows, seats, etc) or the lights dim while you are driving. Yet another symptom is experiencing difficulties starting your car. This could be an issue with the battery, so make sure that you check the terminals and note the age of the battery. If your battery frequently discharges then this is another sign of a bad alternator. Hope this helps!
First, make sure you battery connections are clean and tight. All good? Take it to an auto parts store where they will check it for you.