Nick,
It is most likely that you have a partially pugged radiator. Also, the
modern thermostats are of the "pop-up valve" type. Older versions were a
"butterfly valve" style and when open would allow a greater flow of water
through. I see new ones ocassionally at swap meets.
I had an interesting situation once where the engine suddenly began
overheating at speeds above 50 MPH. This was a 65 Dodge with a 383. After
trying the usual fixes and ruling out the radiator, I found that the
waterpump was at fault. It had an impeller that was plastic, with internal
splines that mate to the shaft and were mostly stripped. At low RPM, the
impeller would turn, and at higher RPM it would slip.
Dave Homstad
56 Dodge D500
----------------------------------------------------------------------
At 12:59 PM 5/18/99 -0400, you wrote:
>Hello all.
>
>On another note, i will start working on my running warm at an idle problem
>next week.
>One person suggested first I check to see that the car is actually running
>warm.
>With the guage at 3/4 towards max, the collant temp (by sticking a
>thermometer in the radiator" was 200 degrees. So I think it's safe to assume
>that when the guage it at max, the car is overheating. The first thing I'm
>going to do is attempt to remove the thermostat.
>
>
>Thanks,
>Nick
>
Dave
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