Joseph,
Maybe your antifreeze is weak or too diluted. Look at it in the morning to
see if  it's the consistency of a slushy. What you could be hearing is the
osterizer effect.

Ken Lewis
http://neksiwel.20m.com/
----- Original Message -----
From: "Joseph Fortino" <fortino1@EARTHLINK.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Tuesday, December 06, 2005 11:39 AM
Subject: [VANAGON] water pump 1.9l

> hello everyone,
>
> seems the temp has dropped ALOT here in Nevada last couple days, anyway
van is outside at night
> and it drops to about low 30's i think at night.
>
> Question is it really common for the pump to make a whirl noise and the go
away, this is a new pump
> seems on start up only in the morning it will sometime do this, after
being out all night in cold.
>
> When in the garage it does'nt do this..
>
> Thanks,
> Joe
>
>