John -
Is it possible you dented the bulb a bit? That would tend
(theoretically) to show a consistently higher reading than before the
work, because the internal volume of the bulb would be reduced. I have
no idea whether this could be enough to account for the varaince, but
it's maybe worth a look.
Chris Kotting
ckotting@iwaynet.net
Michael Dietsche wrote:
>
> Now it doesn't sound like you had a thermostat problem. Running with the
> gutted plate showed how cool the system could possibly run.....190 deg at the
> gage. So you're not gonna get it to run any cooler than that with any
> thermostat; in fact, with a working thermostat installed it will stabilize a
> little higher than the 190 gage (because of the additional restriction a true
> thermostat offers versus the gutted plate). And that's pretty much what you
> initially reported, with a stabilzed gage reading at 200 deg after the
> thermostat opened up.
>
> 190 deg free flow seems a little high to me too, especially since your earlier
> post implied it used to run cooler before you did the cooling system work. It
> comes down to the remaining possibilities -- the gage reading is off, or the
> rest of the system isn't cooling as well as it used to.
>
> I know you have confidence in the gage, but it's probably the easiest thing to
> check and the easiest problem to resolve if that's really what's going on
>here.
> Personally I'd verify that it's really running at that temp, since the
> operation of the system seems normal except for the somewhat high reading.
>But
> if it really is running slightly hot, look at all the components you changed
> out first, then at the rest of the system for secondary effects/faults.
>
> It's always possible that the recored radiator isn't as good or is restricted
> somehow. Or a new hose could be pinched, or crud could have been introduced
> into the system, or something's up with the water pump, etc. etc. But unless
> you see something obvious I'd verify the water temp to make sure there's
>really
> a problem. You'd hate to tear into it and do something drastic to solve a
> non-existent problem....
>
> "If you disturb it, it will fail."
>
> MD
>
> --- "Gronberg, John" <john.gronberg@us.landisstaefa.com> wrote:
> > Last night I took a thermostat and removed the "guts" from it and
> > reinstalled the gutted plate back in the car. The car got up to 190 F and
> > stayed there. Does that point to the Trak brand thermostats not opening up
> > all the way?
> >
> > Regards
> > John Gronberg
> > Siemens Building Technologies, Inc.
> > Buffalo Grove, Illinois 60089-4513
> > Phone: 847-215-1050 ex 5092
> > Fax: 847-229-3658
> > Email: john.gronberg@us.landisstaefa.com
> >
> >
> >
>
> ===
>
> Michael B. Dietsche, P.E.
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