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Alternator 2001

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Old Dec 22, 2009 | 09:51 PM
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Default Alternator 2001

Think my alternator bearing is going bad. Checker Auto tells me there is no kit to repair this, just replace alt unit. I have an A4, & they are telling me that alt is different for auto than manual trans. Is this true? If so what's the difference? Will a manual trans alt function OK on an auto or not?
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Old Dec 22, 2009 | 10:06 PM
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What makes you think the alternator is going bad? There are a couple of other things that exhibit the same symptoms. What are you seeing?
The alternators are different. From gmpartshouse.com:


Alternator, corvette, manual trans
01-04 $622.86 $404.50
Component Parts Not Serviced Separately.

Alternator, corvette, auto trans
01-04 $649.64 $422.08
Component Parts Not Serviced Separately.

Last edited by 65GGvert; Dec 22, 2009 at 10:13 PM.
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Old Dec 23, 2009 | 12:48 AM
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A screeching, grinding noise from the front of the alternator, but gauge still shows normal output. Parts guy at checker auto said the front of the alternator pulley sticks out inch or so past belt and that was a clutch drive for the alternator and was only on auto alternators. He said that is what is going bad. Could that be correct?
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Old Dec 23, 2009 | 06:36 AM
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Sounds possible, maybe someone has had the experience and will help here? Anyone?
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Old Dec 23, 2009 | 06:50 AM
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Find a starter/alternator shop.
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Old Dec 23, 2009 | 08:33 AM
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Originally Posted by jaxvet
I have an A4, & they are telling me that alt is different for auto than manual trans. Is this true? If so what's the difference?
Yes, they both are different.

The alternators used on the A4 have a slip clutch type drive pulley, while
alternators used on M6 equipped Corvettes do not have it.
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Old Dec 23, 2009 | 09:54 AM
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Take the bearings to a bearing distributor, all they have to do is look at the numbers on the bearings.
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Old Dec 23, 2009 | 12:45 PM
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Thanks for quick responses - I'll find a starter/alternator shop.
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