<VV> Squealing noise from engine compartment

[Daniel Monasterio]

IMO, it looks like alternator bearings are going bad. By the alternating symptoms it looks like the needle bearing (left side) is guilty as the noise is not continuos. Anyways, I'd change both ones. The one on the pulley side is a 6203 (with rubber seals). If the first one is bad, check the end of the field shaft for markings, as the needles run on the shaft.

Go by Harry's instructions first, to be sure on which pulley is the noise coming from.

Daniel Monasterio

> From: hyarnell1 at earthlink.net
> To: jwcorvair at aol.com; virtualvairs at corvair.org
> Date: Thu, 6 Oct 2011 15:42:28 -0400
> Subject: Re: <VV> Squealing noise from engine compartment
> 
> You're probably right, but take the fanbelt off, and spin each pulley(3)
> looking for the culprit.
> 
> 
> 
> -----Original Message-----
> From: virtualvairs-bounces at corvair.org
> [mailto:virtualvairs-bounces at corvair.org] On Behalf Of Joe White
> Sent: Thursday, October 06, 2011 3:26 PM
> To: virtualvairs at corvair.org
> Subject: <VV> Squealing noise from engine compartment
> 
> 
> Hi All, 
> 
> I have a squealing noise coming from my engine compartment. The noise is
> worse when I have my headlights on at night. At idle I cannot hear a
> squealing noise, but the alternator light is on. As I rev the engine the
> noise starts and progresses until about 2500 rpms then the squealing stops
> and the alternator light turns off. At about 4500 rpm at the squealing
> starts again and the alternator light turns on. Between 2500 rpm and 4500
> rpm, no squealing, no alternator light. When I drive the car during the day,
> no squealing, no alternator light.
> 
> I suspect that the alternator is going bad, but wanted to post this on VV to
> see if anyone had other thoughts.
> 
> Regards,
> Joe White
> Boulder, CO
> CORSA, RMC
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