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alternator crackling

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Old Jan 4, 2009 | 02:26 PM
  #1  
SDCamaro1904's Avatar
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From: San Diego
Car: 1984 Camaro Z28
Engine: 305 H.O
alternator crackling

well when im under the hood and give it some gas i hear my alternator wind out then make a weird crackling noise.... u can really hear it when i down shift in second its really embarrassing to be honest does anyone have any ideas? u think its just about to go out on me or somethings loose?
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Old Jan 5, 2009 | 04:36 AM
  #2  
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From: Oslo, Norway
Engine: '85 Monte SS L69 305
Transmission: TH 200-4R
Axle/Gears: 3.23
Re: alternator crackling

The bearings may be about to go out completely. Just before my clutch fan stuck it made some kind of crackling noise.
Take off the fan belt and check the bearings for wear/noise.
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Old Jan 5, 2009 | 07:49 AM
  #3  
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From: Southern IL
Car: 88 GTA "Cocaine"
Engine: 350 tpi
Transmission: 700r4
Axle/Gears: 3.27
Re: alternator crackling

replace it

we dont have magic wands
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Old Jan 5, 2009 | 03:33 PM
  #4  
SDCamaro1904's Avatar
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From: San Diego
Car: 1984 Camaro Z28
Engine: 305 H.O
Re: alternator crackling

im gonna replace it i have a lifetime warranty on it but i like to learn about weird noises and what causes them for future reference thanks... and i have an electric fan so dont think its my fan clutch
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Old Jan 6, 2009 | 01:08 AM
  #5  
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From: Oslo, Norway
Engine: '85 Monte SS L69 305
Transmission: TH 200-4R
Axle/Gears: 3.23
Re: alternator crackling

Duh.. When I mentioned my clutch fan noise it was because both items have bearings that can fail in the same way, giving off similar noises.. You wouldn't need to take off the belt to check the fan clutch bearings. Get the bearing?
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Old Jan 6, 2009 | 01:22 AM
  #6  
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Re: alternator crackling

Originally Posted by SDCamaro1904
im gonna replace it i have a lifetime warranty on it but i like to learn about weird noises and what causes them for future reference thanks... and i have an electric fan so dont think its my fan clutch

Definately Bearings going Bad.
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Old Jan 6, 2009 | 07:35 PM
  #7  
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From: San Diego
Car: 1984 Camaro Z28
Engine: 305 H.O
Re: alternator crackling

alright gotcha
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Old Jan 7, 2009 | 08:56 PM
  #8  
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From: San Diego
Car: 1984 Camaro Z28
Engine: 305 H.O
Re: alternator crackling

alright so i put in a different alternator and its still doing the same thing???
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Old Jan 9, 2009 | 04:01 PM
  #9  
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From: San Diego
Car: 1984 Camaro Z28
Engine: 305 H.O
Re: alternator crackling

so im pretty much lost here....
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Old Jan 9, 2009 | 04:14 PM
  #10  
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From: Mooresville NC
Car: LOWERED ♦ CRIMSON METALFLAKE
Engine: ► 400 KUBES ◄
Transmission: 765R4
Axle/Gears: EATON POSI 4.56
SOUND ADVICE

.
.



To isolate the sound take a piece of hose and use it like a stethoscope.

WATCH OUT FOR MOVING PARTS !

You’ll find the source.



.
Happy Racing!

.

If People Drove Any Slower They’d Be Going Backwards
.
.
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Old Jan 9, 2009 | 08:56 PM
  #11  
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From: San Diego
Car: 1984 Camaro Z28
Engine: 305 H.O
Re: alternator crackling

yeah i did that i know its the alternator for sure but i dont know whats causing it do do that well im gonna have a mobile mechanic come out and check it out along with my timing and carb adjustments.... maybe he will have an answer hopefully
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Old Jan 10, 2009 | 07:49 AM
  #12  
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From: Southern IL
Car: 88 GTA "Cocaine"
Engine: 350 tpi
Transmission: 700r4
Axle/Gears: 3.27
Re: alternator crackling

is the belt 2 tight?

are you sure its not the water pump

is the altenator pulley in perfect alignment with the rest of the pulleys

just some of the things I would think of
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Old Jan 11, 2009 | 01:33 AM
  #13  
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From: San Diego
Car: 1984 Camaro Z28
Engine: 305 H.O
Re: alternator crackling

the belt isnt too tight the water pump is brand new and yeah they all line up fine i looked.... i know when i was putting in my water pump and i had to loosen the alternator and take the bracket off well i didnt disconnect the negative on my battery and sparked a little but it shouldnt be a problem and when i put a different one in it made the same noise anyways
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