Okay - are you sure the water pump is circulating?
If not remove radiator cap with engine cold & start engine, idle up to say 1000-1500 rpm to warm engine (USE TERMOMETER) and see when the thermostat is opening (typically 160 -180 degrees).
What you are looking for is to see that your coolant is circulating -- you will know when the thermostat is opening.
Another thing is to test the thermostat itself, use thermometer and put in cold water in a pot on the stove, heat water and test temperature to see it opening at 160-180 degrees.,. if not replace thermostat.
Also -- Is the thermostat in correctly? (might it be in backwards?)
Also -- are any hoses pinched by chance?
Are you getting heat to the cabin?
Let me know how you make out!
Best regards
Ck
Overheating can seriously damage a car's engine if left unchecked. Although overheating simply means that a car's engine temperature exceeds normal operating temperatures, the causes of overheating are varied. What follows is a brief list of some of the most common causes of engine overheating.
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