Belt Squeel at WOT? - Team Camaro Tech
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post #1 of 6 (permalink) Old Aug 6th, 03, 03:23 PM Thread Starter
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Matt Jones
 
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I've never really had this problem before. It's not really a problem, it's more of an annoyance. Sounds like I'm steping on mice when I rev the motor!

Whenever I rev the motor, or go WOT from a stop, the alternator belt squeels. The belt is a new Goodyear Gatorback, and is at the correct tension. I'm worried if I tighten it any more, I'll hurt the alternator bearings. Pully alignment looks good also.

This all happens with no accessory electrical load, also (if there is a load, it's a bit worse). Any ideas?

Matt Jones
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Art Morrison Ent. Inc.
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post #2 of 6 (permalink) Old Aug 6th, 03, 04:19 PM
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Chad
 
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Check the pullies for wear. A belt grips on the sides if the pullies are worn and the belt bottoms out in the groove it will slip.Could try a different brand belt if pullies are ok.

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post #3 of 6 (permalink) Old Aug 6th, 03, 09:26 PM
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also check your clearance between the alternator fan and the mounting bracket.....maybe under wot, the alternator is slightly moving allowing the alternator fan to hit bracket and cause the squeel you hear? check alternator fan for wear marks on the fins for signs of contact... [img]graemlins/beers.gif[/img]

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post #4 of 6 (permalink) Old Aug 6th, 03, 09:36 PM
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Now I know this is gonna sound silly, but - How old is your battery?
I find that when my battery gets to be about three or so years old I start having trouble with belt noise and wear. I replace the battery with a new one and the problem goes away - for another 3+ years at least.
I've checked the charging system 6-ways from sunday and everything checks fine.
I've tried belts, alternators and regulators over the years and changing the bat. has always been the fix.
I think the poor old alt. has to work harder trying to get the juice-box back up to a full charge.

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post #5 of 6 (permalink) Old Aug 7th, 03, 05:56 AM Thread Starter
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Matt Jones
 
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These are good suggestions.

Plum-
The belt seems to be contacting the pully face OK. Maybe I oughta use a bit of toothpaste and see what happens? maybe the belt and/or pully is glazed?
Bob-
Interesting situation, but it checks out OK. I would have never thought of that.

Vintage-
That's a good point. Battery is...lets see...about 2 years old. Can't really afford to buy a new battery at this moment. Maybe this will give me an excuse to upgrade to the lovely 100A CS alternator...

Matt Jones
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Art Morrison Ent. Inc.
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post #6 of 6 (permalink) Old Aug 7th, 03, 06:11 AM
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I had that problem but with new pulleys and belt. I used crocus cloth and lightly sanded the inside pulley groove sides and the squeel went away.

Rick Dorion
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