Also an increase in temp around town as the ambient temp rises.  Water pump
is new, hoses are new, belts are a year old.

Thanks for the stuff to check.

Mike

On 7/2/03 2:41 PM, "Ben huot" <huotx@VIDEOTRON.CA> wrote:

> Radiator should be one of the last thing to blame on a Vanagon! Except for
> that stupid bleeder screw, is it loosing pressure there?
>
> Radiator Wisdom: They don't clog easily, that story from my grand mother.
> But they do loose pressure, that is a fact, when they do loose pressure you
> could se an increase in temp at freeway speed, where the engine is producing
> more energy and needs efficient coolin. (my racing experience)
>
> You can flush your rad with city water!!! afterward, let this one dry in the
> sun , if the flow is nice a the other end of the rad this one is working
> fine, look for something else.
>
> Heating problems/cause in order (if no external leak):
> -Water pump (main problem)
> -thermostat (no they don't always break fully open, believe me)
> -lost of pressure
> -gain of pressure
> -front radiator
> -air pocket
> -clog passage (not a real problem on Vanagon)
> -old coolant (put some brand name fresh coolant and pleaseeeeee, forget that
> phosphate free crap!!!
> -your van is possess by an evil spirit (and was built on planet Mars by
> drunk VW engineer)
>
> check coolant pressure and coolant quality, if you are perfectly sure that
> the pump is doing is job... Are you sure?
> http://www3.sympatico.ca/huotx/pressure_test.htm
> http://pages.infinit.net/engine/cooling_system_flow.htm
> http://www3.sympatico.ca/huotx/front_radiator.htm
>
> Cheers, Ben
> http://www3.sympatico.ca/huotx/engine1.htm
>
>