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Check your radiator hose
That would be the electric switch that is screewed into the intake to the left of the thermostat housing.
Leaking radiator radiator hose head gasket water pump Heater core thermostat housing
Low on coolant. Cooling fans are not operating. Faulty thermostat. Air flow through radiator is restricted. Coolant flow through inside of radiator is restricted. Bad head gasket.
In systems that do not have a radiator cap, the coolant is drained by the radiator drain plug. It is filled by adding coolant to the system through the overflow bottle.
If the radiator is cracked then the vehicle has ran dry on coolant. This would cause the radiator to crack if there wasn't any coolant.
Could be, a bad thermostat, low on engine coolant (leak), a faulty fan clutch, a missing or damaged fan shroud, a plugged radiator,
there is no real radiator cap. On the left side of engine compartment there is a coolant jug. This where you would add coolant to radiator.
You may have low coolant in the radiator and it is causing the sensor to flash as the coolant raises and lowers. Check the coolant level in the radiator (not the fill bottle) You may have air in the radiator and the air pocket may be causing the light to flash. You would need to bleed the air out. You may have a bad sensor and needs to be replaced. It is located on the passenger side of the radiator below the fill neck (and has a wire going to it)
might be the thermostat stuck shut The radiator and cooling system could be low on coolant
Most drain plugs are on the bottom of the radiator they are called (pee-cocks). Some look like a wing-nut and sometime they look like bolts. It would be best if you look near the bottom on the radiator on either sides of the radiator for the drain plugs. I
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