Good morning,
I would replace the thermostat to start. It may be stuck closed.
https://www.2carpros.com/articles/replace-thermostat
The fan not working may be causing it to overheat at idle. Can you see the fan come on?
https://www.2carpros.com/articles/how-an-electric-cooling-fan-works
It almost sounds like air in the system. I would remove the cap and run the motor at 1,200 RPMs. Watch the coolant level and add as needed. When you get heat in the car, the air is gone.
https://www.2carpros.com/articles/engine-overheating-or-running-hot
I attached a wiring diagram of the cooling fans for you in case they are not working.
https://www.2carpros.com/articles/how-to-check-wiring
https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit
Roy
1. Drain the cooling system.
2. Remove the air cleaner outlet duct.
3. Disconnect the surge tank hose from the coolant outlet.
4. Remove the thermostat housing to intake manifold bolts.
5. Remove the thermostat housing outlet and thermostat.
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Wednesday, January 20th, 2021 AT 6:36 AM