Cooling issue, but this time it's to cold...

PhillH said

Absolutely nice and hot. So now that the engine is getting up to temp, the heater is more than adequate.
Still wierd though how I couldn't get the engine up yo temp with 90 degree days here in Florida??? The mornings that were in the 50's I could not even get the heater to warm up unless at a stoplight.

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I think the heater thing is clear, and it is an indicator that the coolant temps were indeed cold... at least at the top front of the intake....and now they are not. And now having hot heater heat likely says it is not just an electrical thing that made the gauges read wrong.

So how could the coolant be bypassing the t'stat and getting through the rad and water pump.....? Does that old rad flow ANY water now that it is out?

Is your temp sensor in the standard location, up on the passenger side front of the intake manifold?