I would start off with replacing the radiator cap if it don't have one then the cap on the refill tank ,this may fix your problem .
No.
Check into the temperature control valve--this is different than the thermostat.
To test a hot water heater thermostat, you can use a multimeter to check for continuity in the thermostat. First, turn off the power to the water heater. Then, remove the access panel to expose the thermostat. Use the multimeter to test the thermostat's terminals for continuity. If there is no continuity, the thermostat may be faulty and needs to be replaced.
the thermostat is on the back of the engine, look lower left of the intake manifold, the heater hose is running into it.
The heater cor was replaced but it is still not getting warm
If a thermostat is not working properly, you cannot calibrate it. It must be replaced.
It could be that you are low on coolant, but if that is not the case, your thermostat may be stuck open. After the vehicle has been running for about 15 minutes, put your hand on the top of the radiator. If it is not too hot to touch, your thermostat should probably be replaced.
To test the thermostat on an electric water heater, you can use a multimeter to check for continuity and proper functioning. First, turn off the power to the water heater. Then, remove the access panel to expose the thermostat. Use the multimeter to test the thermostat's terminals for continuity. If there is no continuity, the thermostat may be faulty and need to be replaced.
It's in the thermostat housing between the actual thermostat and heater hose. Has a little insulated wire coming out of it.
To turn off the heater in your house, locate the thermostat and set it to the "off" position. This will stop the heater from running and heating your home.
Thermostat probably needs to be replaced.
The thermostat on a 2004 Eddie Bauer Edition Explorer 4.6L V8 is located in the top heater hose. It is in the end that is attached to the water pump.