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

TrailBeast said
I would definitely suspect the flow rate of the heater core.
Is it new, or are you sure of the flow rate through it?

If not I would pull the hoses at the engine and backflush that heater core and see what I get out of it.
It's quick to do and answers a pretty important question.
Click to expand...


^^^^^^^^ Xs2

Did this recently to a Cherokee, turned on the water backflushing, there was a moments hesitation in flow, then it spat out a greenish/gray wad of something gelatinous, that dissintegrated against the rad support. - voila. we had heat.