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Noisy alternator

M

Maxy M

Barcelona
Joined
24 May 2004
Messages
1,411
From time to time when I start up the alternator sounds a bit screechy, like something is dry or a maybe a bearing is on the way out. Disappears after a decent run.

I'm not TOO bothered by it and will mention it to JZ when the car goes in to have a few little things put right at the end of the month. But in the meantime, anyone got a view?


Migration info. Legacy thread was 26473
 
Belt squeak - in my opinion caused by a stretched belt - lubricate with talcum powder or chalk.

Migration info. Legacy thread was 26475
 
surely it would be better to replace the belt? if it is stretched ?

Migration info. Legacy thread was 26480
 
Interesting. I've checked the belts. All look in good nick and nice and tight. Experimenting with talc is cheap enough.

What about Warren's point, though?


Migration info. Legacy thread was 26482
 
maybe the talc idea is just a temporary solution?

Migration info. Legacy thread was 26487
 
Maxy,

It may be the fan roller bearings, they are prone to squeal a little, have had this problem myself and noticed it mainly when the engine had just been fired up, disappeared after a run.

You can lubricate the bearings, have a look at
http://p-car.com/diy/roller/

John


Migration info. Legacy thread was 26493
 
Cheers, John. I'll investigate.

Migration info. Legacy thread was 26503
 
This happens intermittently on my 96 993 C2, instant cure is a quick squirt of WD40 in the general direction of the alternator/fan belt. Spray grease provides a more permanent fix but don't do it with the engine running unless you want a very spotty shirt!

Migration info. Legacy thread was 26547
 
Thanks fellas. The p-car fix loks a bit involved. WD40 sounds like an easier - if temporary - fix. But everything is running quietly currently...

Migration info. Legacy thread was 26765
 
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