Date:         Mon, 29 Mar 1999 21:19:34 -0600
Reply-To:     Joshua Van Tol <jjvantol@USWEST.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Joshua Van Tol <jjvantol@USWEST.NET>
Subject:      Re: Fwd: Re: Diagnosing cooling fan
In-Reply-To:  <4.1.19990329204140.0097b540@pop01.ny.us.ibm.net>
Content-Type: text/plain; charset="us-ascii" ; format="flowed"

> Eric gave the clue!  I wrote:
>>Ok, I've looked at the Bentley -- first of all, there's no mention of a
>>resistor pack in the schematics for any year that I looked at except
>>possibly the '83/84, where there's an ambiguous little symbol that could
>>possibly be a resistor.  I've an '84 myself, maybe I'll look sometime. :)
>
> Well, they changed it all around for the A/C versions.  On the '88 the
> thermoswitch triggers low and high speed, and the AC does low (AC on),
> medium (Compressor on), and high (high pressure in system).  So, if it
> isn't running at all, the path to check is: Fuse S1, 30A;  2.5mm BK to
> thermoswitch pin 3; [short pin 3 to pin 2] ; 2.5 mm R/W to resistor pack
> pin 2; 6.0 mm R from resistor pin 3 to fan motor; 6.0 mm BR to ground at
> terminal 10 near fuse panel.
>
> If you short across the resistor pack it will probably blow fuse S1, as
> that would run the fan at full speed which is normally supplied through an
> un-numbered 50A fuse direct form the battery to pin 30/2 of the "Rad Cool
> Fan Relay 3rd Stage," which also feeds the fan motor through a 6.0 mm R wire.
>
> That's a big fan motor, could be up in the 400W range!

Specifically, It's 450 Watts.

Joshua Van Tol -- jjvantol@uswest.net