alternator makes noise when key is on
#1
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Location: Tenino, Washington
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Car: 89 f-bird and some others
Engine: 3.4
Transmission: 700R4
Axle/Gears: 3.42
alternator makes noise when key is on
I've never noticed it doing this before until today. Recently my mileage has been dropping, and today while checking the TPS, I heard a buzzing sound coming from something.
Found out it was coming from my alternator.
I remember hearing this the other day too when I had the intake and other stuff apart and was changing the t-stat, but didn't track it down.
I turned the key back off, unplugged the connector to the alt, and no more noise when I turn the key back on.
1. Alternator going bad?
2. something else?
3. or is this normal, and I've just never noticed it before over the last 10 years.
Found out it was coming from my alternator.
I remember hearing this the other day too when I had the intake and other stuff apart and was changing the t-stat, but didn't track it down.
I turned the key back off, unplugged the connector to the alt, and no more noise when I turn the key back on.
1. Alternator going bad?
2. something else?
3. or is this normal, and I've just never noticed it before over the last 10 years.
#3
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Location: Silverhill,Al
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Car: 92 Camaro RS
Engine: 305 TBI
Transmission: T-5
Re: alternator makes noise when key is on
I posted about the same ? awhile back, my brand new alternator was humming with the key on and engine not running. It's still doing it and no problems.https://www.thirdgen.org/forums/tech...hums-when.html
#4
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Join Date: Nov 2001
Location: Tenino, Washington
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Car: 89 f-bird and some others
Engine: 3.4
Transmission: 700R4
Axle/Gears: 3.42
Re: alternator makes noise when key is on
I posted about the same ? awhile back, my brand new alternator was humming with the key on and engine not running. It's still doing it and no problems.https://www.thirdgen.org/forums/tech...hums-when.html
I've had alternators go bad before, but it was only noticable when the car was running.
Even if this is normal, it's certainly louder than it was before.
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