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.
Bad seal Bad spring Bad neck on radiator
your radiator clogged up.cheaper to get a new radiator. nothing to do with the radiator cap.
Overheating due to coolant going to the reservoir and not coming back to the radiator because of the bad cap.
Bad thermostat, fans not working or coming on when they are supposed to, bad waterpump, bad radiator or radiator cap.
Usually the rubber will be hard and cracking
You may have a bad radiator cap.
Low coolant? Radiator dirty or plugged? Bad thermostat? Bad water pump? Cooling fans not working? Bad radiator cap?
Bad thermostat, cap and radiator is a common cause.
bad radiator cap
Bad thermostat? Radiator clogged? System "airbound" water pump not working? Low coolant level? Bad radiator cap?
could be a cracked radiator, bad radiator cap, a busted radiator or heater hose, bad heater core, or a busted fill box!
If you have a threaded cap on your coolant reservoir that is your " radiator cap "