Alternator brushes, slip rings or bad rear bearing or both.

Dennis

>From: John Rodgers <inua@CHARTER.NET>
>Reply-To: John Rodgers <inua@CHARTER.NET>
>To: vanagon@GERRY.VANAGON.COM
>Subject: Strange Malady
>Date: Fri, 16 Mar 2007 22:13:24 -0500
>
>A day or so ago, I pulled into a parking spot, and before I could turn
>of the engine, the battery light and the O2 sensor light came on. That
>was odd I thought. I took care of business, and when I started the
>engine again to go home, the battery light and the O2 light did not go
>off. I checked the belts and the battery (what for I don't really know -
>had it been down the thing wouldn't have started). After farbling around
>a bit, I rev'ed the engine to 2000 rpm and the lights went out. Below
>that and the lights came back on. This pattern has remained, but it has
>gotten worse. I have to rev the engine even more now before the lights
>go out, and they don't stay out. Engine rpm must remain quite high for
>the lights to remain out.
>
>I'm guessing that the regulator part of the Alternator is failing. Has
>anyone got any ideas?
>
>Thanks,
>
>John Rodgers
>88 GL Driver