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It can be a significant contributing cause, especially if it's bad enough to keep the system from pressurizing.
Bad thermostat, cap and radiator is a common cause.
A bad radiator cap needs to be replaced as soon as possible. Fluid can leak out causing the car to overheat. Constant overheating can lead to expensive repairs. The average radiator cap costs less than $10.00, so it's worth the investment.
Quick overheating is very often a bad head gasket. With it cold, take the radiator cap off, make sure it is full and with the cap off start the car. If it is a head gasket, water should shoot out of the radiator a couple of feet high. Simpler reasons, clogged radiator, stuck thermostat, bad water pump, bad radiator cap.
Blown head gasket or bad radiator cap
cooling problem, bad radiator or water pump and if it has an electric fan make sure it's kicking on.
The spring on the bottom of a radiator cap will cause it to fail. If the spring does not work properly it can lead to pressure escaping from the radiator which can overheat the vehicle.
Low coolant Bad radiator cap Dirty or plugged radiator Thermostat cooling fan not working Water pump Collapsing hoses
Bad Head gasket? Low coolant? Clogged radiator? Bad thermostat? System airbound? Defective radiator cap? Collapsing radiator hoses? Cooling fan not working? Water pump not circulating coolant?
BAd radiator cap, low coolant or (leaking), Bad thermostat, cooling fans not turning on.
Yes, if it is not holding pressure or is allowing a coolant leak.
One or all of these not working properly; bad radiator cap, low coolant, bad thermostat, clog radiator, clog heater core, fan not coming on due to bad relay.