Why does my alternator make a noise when its cold?

Let’s learn why does my alternator make a noise when its cold. The most accurate or helpful solution is served by Yahoo! Answers.

There are ten answers to this question.

Best solution

Will a bad alternator make a load noise like a loss belt would?

I have replaced everything from the idler pully, tensioner and pully, and even 2 belts. Took it to a shop and they said it was my alternator, you can her a noise when you spin it by hand. I replaced the alternator with a rebuilt from a salvage yard and the one i put on made the truuck quit for like 4 hours, then a whine came back, just not as load. i sprayed belt dressing and it is really load now. Getting a new on but not sure if im wasting money. The water pump, ac, and fan have 0 noise when you...

Answer:

you keep trying to save a buck, I understand, that, belive me, but at some point, you have to realize...

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Other solutions

Why does my Ford Windstar make a grinding noise now I replaced the serpentine belt because it blew and now this noise has emerged it is not the power steering pump or alternator?

Answer:

check your idler pulley and tesioner pulley

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Why does the alternator make a clicking noise?

Answer:

What you are hearing is the clutch on the air conditioning pump engaging... the alternator doesn't make...

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Why does your 1984 Chevy s10 pick up truck make a loud loud winding noise after start up have checked the alternator and the water pump it is not either of the 2?

Answer:

Have ypu tried looking at the power steering pump? this test will make it easy to find out if it is...

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Why in around 2 weeks after changing the alternator on a 2000 ford f 150 super cab xlt does the engine make a rattling or whining noise that comes and goes?

Answer:

I would first check the timing belt/chain and alternator pulley for any odd damage. Its possible the...

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Does the alternator make a noise when charging the battery?

Answer:

An alternator has fast moving parts surrounded by air, so it will make a noise in operation, in much...

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Does your car make a noise when the alternator needs to be replaced?

Answer:

Sometimes, but not always, the alternator will whine loudly when it's malfunctioning.

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What is wrong if my car won't start and when I turn the key it doesn't make a noise or anything, and I checked the battery and changed the alternator?

Answer:

It may be problems with your engine, but if it won't start you should really get a professional technician...

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Can an alternator make scrubbing noise when you turn it off?

Answer:

NO! It stops moving when the engine stops and you cant turn the Alt off by itself.

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Could a faulty alternator make a noise that sounds similar to a belt going around and around in a 2001 Mercedes C240?

Answer:

It is possible but to correctly diagnoise a noise you have to hear it.

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