Your engine may not be overheating.  The temp sensor on the thermostat housing may be bad.  DMc

---- Andrew Martin <ramblinvan@GMAIL.COM> wrote: 
> The follow up...
> 
> I installed the new water pump yesterday afternoon.  I bought the new pump
> from the Van Café; German made and came with both needed o-rings and the
> gasket for the small cross over pipe.  
> 
> Since I was working in that area, I also changed the oil cooler o-ring and
> the small coolant hoses that connect the oil cooler to the water pump and
> thermostat housing.  Those short reinforced rubber hoses harden over time
> and don't like to be wiggled and flexed during the water pump installation
> so rather than risking a possible hose failure in this very tight and barely
> accessible location, I replaced them all.  They are not "crasy" expensive so
> it's rather cheap "peace of mind".
> 
> The Van Café sells everything needed for this project and I was particularly
> impressed with the new oil cooler o-ring they sell.  It's got ears!  The old
> oil cooler o-ring was perfectly round (though squished flat and stiff) but
> the new o-ring has small tabs that fit over the raised tangs on the cooler
> and hold the new o-ring in place during reassembly.  Me like.
> 
> Here's my parts list with part numbers and VC prices.
> 
> Water Pump 2.1L
> 025.121.010C  1  $68.00  
> Cooling Hose - Oil Cooler to Metal Pipe - SEE DESC
> 025.121.058D  1  $3.75   
> Cooling Hose - Joins metal pipe from oil cooler -
> 025.121.058E  1  $6.45   
> Cooling Hose - Oil Cooler to Metal Pipe - SEE DESC
> 025.121.058G  1  $5.45 
> Water Pump Hose - SEE DESCRIPTION
> 025.121.058J  1  $6.95   
> Oil Cooler Seal
> 038.117.070A  1  $3.25
> 
> I also installed all new ss smooth band clamps but I'm kinda nutty that way.
> 
> 
> Though I was irrationally hopeful that the new water pump might lower the
> needle position on my temp gauge, it did not.  
> 
> Kinda informative and serious for Phydaye, eh?
> 
> Andrew
> Bainbridge Island WA
> 
> 
> 
> -----Original Message-----
> From: neil n [mailto:musomuso@gmail.com] 
> Sent: Friday, April 16, 2010 10:09 AM
> To: Andrew Martin
> Cc: vanagon@gerry.vanagon.com
> Subject: Re: Busted water pump and an extra nut
> 
> On Wed, Apr 14, 2010 at 8:41 PM, Andrew Martin <ramblinvan@gmail.com> wrote:
> > I interrupt this HIJACKED thread to share my busted Vanagon water pump
> > story.
> >
> >
> >
> > Read about it and see the grisly photos at this samba link.
> >
> >
> >
> > http://www.thesamba.com/vw/forum/viewtopic.php?t=409400
> >
> >
> >
> > Got nuts?
> >
> 
> 
> FWIW, I find that a flexible magnet is super useful for retrieving
> lost nuts. That and a dental mirror. Really handy. Just something for
> future reference as it seems VW Canada left that nut in there no?
> 
> Good news you found the broken metal bit so easily.
> 
> Neil.
> 
> 
> -- 
> Neil Nicholson '81 VanaJetta 2.0 "Jaco"
> 
> http://tubaneil.googlepages.com/
> 
> http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engine
> s

--
David McNeely