Bad seal Bad spring Bad neck on radiator
The relief vent in the radiator cap is not working, replace the radiator cap.
The radiator cap may be at fault.
If you have a threaded cap on your coolant reservoir that is your " radiator cap "
No , the " radiator " cap / pressure cap is the thread on cap on the engine coolant reservoir
Check the following............................. 1. Cooling fan operation. 2. Radiator cap. 3. Thermostat.
The radiator cap is on top of the radiator.
If your asking this question you shouldn't be working on your truck.
Low coolant? Cooling fan not working? Radiator restricted or plugged? Water pump not circulating coolant? Defective radiator cap? Low coolant? Cooling fan not working? Radiator restricted or plugged? Water pump not circulating coolant? Defective radiator cap?
the radiator cap is on top of the radiator you idiots
A lot of vehicles don't have the radiator cap on the radiator , they use a thread on style cap on the engine coolant reservoir ( that is the pressure cap / radiator cap )
Bad thermostat, fans not working or coming on when they are supposed to, bad waterpump, bad radiator or radiator cap.
The thread on cap on the engine coolant reservoir is the pressure cap / radiator cap