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Old 05-11-2005, 07:03 PM   #1
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Default Alternator noise

Have some irritating whistling sound coming from the altenator. Any suggestions if this is fixable without replacing that damn thing already? Only have 40k miles on this '00 SSEI.
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Old 05-11-2005, 07:48 PM   #2
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Are you positive it isn't the belt whistling when coming around that pulley? If you got time, take the belt off and swap it around (how do you explain that? oh well hope you get the idea) and see if that helps.

Reason I ask, I put a Goodyear Gatorback belt on both my trucks and both whistled after a while. Pat
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Old 05-11-2005, 09:02 PM   #3
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Do you live in a really dusty/dirty area?
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Old 05-11-2005, 09:32 PM   #4
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Default Re: Alternator noise

Quote:
Originally Posted by boott
Have some irritating whistling sound coming from the altenator. Any suggestions if this is fixable without replacing that damn thing already? Only have 40k miles on this '00 SSEI.
Do you have a sounding rod to listen to the alternator? A long shank flat bladed screwdriver would suffice also. Be careful around the accessory belt & alt. with any type of instrument.
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Old 05-11-2005, 09:53 PM   #5
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Quote:
Originally Posted by LakevilleSSEi
Do you live in a really dusty/dirty area?
yes I live in a real dusty area.
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Old 05-12-2005, 11:56 PM   #6
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I was thinking about asking the same question concerning my '01 SSEi with 55k. Over the Winter I noticed a very slight shrill whine/squeek coming from the same area when I rev the engine a bit. I thought it might be the belt (replaced with a Gatorback = no luck) although it sounds like it'* coming from the rear of the alternator when I used a stethoscope. When I replaced the belt I spun all the pulleys, SC, etc. Sounded like the rear alternator bearing was the culprit when I spun the alternator pulley. Now I'm not so sure. When I scope the SC (just replaced the nose cone about 8 months ago due to leak) it sounds like it may be coming from there, but when I listen without the scope the noise points to the rear of the alternator.
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Old 05-13-2005, 12:24 AM   #7
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Quote:
Originally Posted by compyelc4
I was thinking about asking the same question concerning my '01 SSEi with 55k. Over the Winter I noticed a very slight shrill whine/squeek coming from the same area when I rev the engine a bit. I thought it might be the belt (replaced with a Gatorback = no luck) although it sounds like it'* coming from the rear of the alternator when I used a stethoscope. When I replaced the belt I spun all the pulleys, SC, etc. Sounded like the rear alternator bearing was the culprit when I spun the alternator pulley. Now I'm not so sure. When I scope the SC (just replaced the nose cone about 8 months ago due to leak) it sounds like it may be coming from there, but when I listen without the scope the noise points to the rear of the alternator.
sprayed some lube onto the alternator front,-took care of it for now
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Old 05-13-2005, 01:25 AM   #8
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If the spray took away the sound then its the bearing, start hunting for a new alternator as the bearings are non servicable.
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Old 05-19-2005, 11:39 PM   #9
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The last time I had a whistling sound from my altenator, It was died 2 days later.
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Old 05-20-2005, 08:57 AM   #10
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I replaced mine at 42K miles due to bearing whistle. And they aren't cheap either :(
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