paul banks wrote:
>
> If anyone has had a similar experience, I would appreciate some advice.
>
> My radiator fan seems loud and fast when it kicks in. Usually, the fan is fairly quiet and doesn't seem to turn as fast.
>
> Is the fan switch malfunctioning, or is there  another vanagonesque reason that I am not aware?
>
> TIA
>
> Paul Banks
> '89 Vanagon Westfalia
>
> Signup for your FREE NLL FAN account at http://www.nllfan.com

Paul,

sounds like your hearing the high speed fan kick in. This usually occurs
when the low speed fan resistor (behind the left headlight) is "cooked".
This is a significant fail-safe response because the low speed fan
function isn't doing the job. The low speed usually switches on at 95*C
and the high speed kicks in at 102*C, so you should fix this ASAP to
keep the cooling system temp at the lower threshold.

           JP