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Yes. When the car is at normal operating temperature, the cooling system pressurizes. When the system pressure exceeds the rating on the cap, the spring in the cap is pushed up slightly allowing coolant to flow into the overflow reservoir. This acts as an expansion chamber. When the car is shut off, the pressure falls creating a vacuum that pulls the fluid in the reservoir back into the radiator. If there is a clog in the overflow line or if the rubber gasket on the cap isn't sealing, this fluid will escape instead of flowing into the tank where it can be recovered later. Also, if the cap is not sealing sufficiently, fluid will escape directly out of the cap. When these conditions occur, fluid is lost, until the car will overheat when being operated. To correct, replace the cap (make sure to use the same pressure rating) and ensure there are no splits, holes, or clogs in the overflow line.
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∙ 10y ago
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When the car is running it pumps the coolant out of the overflow tank. It is a 1998 Cadillac Deville 4.6L engine. Do I have a bad radiator cap What are the symptoms of a bad radiator cap.?
your radiator clogged up.cheaper to get a new radiator. nothing to do with the radiator cap.
Bad radiator cap?
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.
Why does your jag 1978 xj6 overheat excessively over very short distances?
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.
Why does your car loose a lot of water?
It can mean that the temperature is too hot or you have a bad radiator cap.
Where is the radiator cap for a 1994 town car?
On a 1994 Lincoln Town Car : The thread on cap on the engine coolant reservoir is the pressure cap / radiator cap
Where is the radiator cap on 1997 town car?
On a 1997 Lincoln Town Car : The thread on cap on the engine coolant reservoir is the pressure cap / radiator cap
Where is the radiator cap for a 1994 lincoln town car?
On a 1994 Lincoln Town Car : The thread on cap on the engine coolant reservoir is the pressure cap / radiator cap
Where is radiator cap on 97 lincoln town car?
On a 1997 Lincoln Town Car : The thread on cap on your engine coolant reservoir is your pressure cap / radiator cap
Where is the radiator cap on 1994 Lincoln town car?
On a 1994 Lincoln Town Car : The thread on cap on the engine coolant reservoir is the pressure cap / radiator cap
Where is the radiator cap on a 1993 Lincoln town car located?
On a 1993 Lincoln Town Car : The threaded cap on the engine coolant reservoir is the pressure cap / radiator cap
Where is the radiator cap on 1999 Lincoln town car?
On a 1999 Lincoln Town Car : The thread on cap on the engine coolant reservoir is your pressure cap / radiator cap ( 16 PSI )
Where is the radiator cap on a 1999 Lincoln town car?
On a 1999 Lincoln Town car : The thread on cap on the engine coolant reservoir is your pressure cap / radiator cap ( 16 PSI )
