Originally Posted by Transman
Three days from the most logical approach mentioned by Topside - check for coolant flow.

Still waiting, and waiting, and....

I'll politely disagree with it being the most logical approach as doing so may mask a partially blocked radiator that may show more flow without the T/ Stat restriction.
In my experience over the last 50 or so years, if increasing the RPM to 2-3K shows no flow one needs to investigate why. other causes are mentioned above.
I will agree with you on the waiting part beer

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