Take your van to a shop that has a infrared heat meter. With the engine
cold before starting, start it up and have the mechanic take readings in
various places as the engine warms. You can tell all kinds of things
about what is going on. it's an education. What you learn should help in
diagnosing your heat  problem.

BTW, this tool was developed by NASA to read temperatures at a distance
before launch, during ingnition, throttle-up, and lift-off. Later the
tool migrated to the race circuit mechanics then to the general auto
shops. A real handy tool to have.

Good Luck,

John Rodgers
88 GL Driver

Jason Willenbrock wrote:
>
> hey all,
> my 90 is running hot.  i changed the tstat with a vw 87c dgree tstat. this
> seemed to run hot.  when i tested it by heating it in water, it did not open
> until 210 dgrees f.  this being a little off i changed it out with another
> vw 87c tstat  which i tested in water at 210 f also.  190 is roughly the
> temp conversion so both these seem hot.  two in a row within months apart
> from each other?  the next thing i did is i felt the radiator and the
> bleeder side of it was hot but the other side (driver side) was cool.
> blocked radiator?   my temp needle is riding high in the temp zone with the
> fan coming on frequently.  what is going on here?  incidently this is after
> doing an engine overhaul.  i realize that during a break in it is supposed
> to be hot but i feel it should not be this hot.  i know my van well and i
> know that this is very wrong.  any clues?  also water pump and 90% of
> coolant lines are new.
> what's up?
> jason
> 90gl
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