you have relay switches that act like a type of fuse, when the relay switch goes out, your fans will not kick on. you can replace it (about $100), or drive and continue to run the heater at all times to get the fans to come on and drop the temp on the car.
Yes, a radiator leak can cause the coolant levels to drop, leading to overheating. The radiator is responsible for cooling the engine, so a leak can disrupt the cooling process and result in the engine overheating.
It means your engine is overheating. You should pull over and stop the car immediately if that light comes on. Overheating can ruin an engine quickly.
Replacing a bad water pump can help to stop a motor from overheating. Hopefully that was the cause of the overheating. If it does not stop the overheating, try replacing the thermostat. Make sure you have the proper mix of antifreeze and water, the radiator filled with it. Check the level of coolant FIRST. Next, the hoses, and third the thermostat. Then, disconnect a hose and see if, by starting the vehicle, if there's water pressure. If not, its water pump time!
radiator plugged.or coolant low
Thermal relay is stuck. Replace it.
cooling fan relay is bad?
If your F-150 is running hot after adding stop leak, it could be due to a few reasons. Stop leak products can sometimes clog the cooling system, obstructing coolant flow and causing overheating. Additionally, if the stop leak was added to a system with existing issues, such as a failing water pump or a damaged radiator, those problems may be exacerbated. It's advisable to flush the cooling system and check for any underlying issues to prevent further damage.
If it is running hot then you need to service the cooling system. Drain and flush the radiator, replace the thermostat, check the operation of the water pump, see if the cooling fan is operating properly, and make sure the belts are tight and not slipping. Another possibility is a blown head gasket. Removing the thermostat is not the answer to an overheating problem.
It is overheating or the oil preasure is low. It probably needs a new engine.
After the engine has cooled to a certain temp, it should shut off. If it is running constantly, this is an indication the engine is overheating.
Black duct tape
I have same...Fan Controller on front clip bad, or shorted lower radiator thermo switch, drivers side.