1998 Chevy Venture Radiator Hoses are solid when the engine is on.?

Why are the radiator hoses are hot solid but it does not overheat. changed radiator cap with original delco


still same result. Fans come on with a/c on and heat works fine.Have only 26.000 original miles.|||WOW, only 26,000 miles on it.





Agree with above, the radiator cap you installed in conjunction with your thermostat allows a pressure to build up in the cooling system which raises the boiling point of water/coolant. That is why the hose feels hard because there is about 10-12PSI applied to the system to raise the boiling point. If you did not add pressure to your coolant system, it would start boiling at 75-85degreesF. If you did not raise the boiling point to a certain threshold, your coolant system will run hotter %26amp; boil off the water/ coolant.





That is why they tell you NOT to take off the radiator cap on a hot engine. Once you remove that pressure, you instantly lower the boiling point back to 75degrees so that 200 degree coolant will pretty much explode in your face instantly the pressure drops








Also, letting it sit like that is extremely hard on any vehicle. It is more stress on the vehicle than if you drove it every day %26amp; put 25,000 miles on it a year. I am suprised you don%26#039;t need any radiator hoses, seals %26amp; gaskets|||I%26#039;m not sure I understand your question. Your cooling system is a pressurized system and when the car is running once it has warmed up the hoses will become solid due to the expanding gases in the system.|||That is perfectly normal as you have a 15 PSI rad cap so the cooling system is pressurized to 15 PSI when the engine is warmed up. That is to raise the boiling point of the coolant.