my top radiator hose swells like a balloon and the car overheats.?

Question

just put a new thermastat and brand new radiator in. what could be next. think maybe the water pump?

Answer 1

check the thermostat and heater core then check the water pump see if it has any leaks or if the bearing is bad it is not just the hose the hose will not cause the car to overheat unless it has a hole in it but you need to change the hose before it busts and then you will have more problems any mechanic that tells you its just the hose and nothing else dont take your car there you will spend alot of money also check the cap

Answer 2

There is more stuff to look at first when it is over heated is your lower hose as hot as the top one if not i would say its your thermostat you can place it in water and bring it to a boil and see if it opens up that is your thermostat were talk in its like any thing else it could be bad brand new next if your top hose is getting that big you need to check it when it is cool squeeze it if it is spongy and soft feeling it needs replaced also i have seen the hub on the shaft of a water pump come lose and spin on the shaft so no circulating water with the car running have the radiator cap off you should see water circulating through the core in your radiator also you could have a cracked head or block

Answer 3

Car Radiator Hose

Answer 4

Replace radiator hose, if you haven't already. It could be the radiator cap - building too much pressure and not letting it into the overflow tank. Radiator hoses shouldn't be soft enough to swell up. More info might be nice - what kind of car? year? Is there a bleeder for the water? Could be air in the system. But all this depends on what kind of car.

Answer 5

You may actually have a blown head gasket and the pressure from the cylinders are pumping up the radiator. This will cause overheating and can cause hoses to swell from the pressure. Remove the cap with the engine cold and start it up. What you are looking for is excessive bubbles and you may look for oil in the water or water in the oil. Pressure from the cylinder will cause air to pressurize in the radiator and swell the hoses. Good luck !

Answer 6

The electrical temperature sensor in the cylinder head should be considered for replacement. Wish you has listed the year make and model of your car. Heater blowing cold air as the coolant gets hotter leads us to believe it has a defective *heater controller or the air blend doors inside the heating and cooling duct-work may be defective. We use an inexpensive tool (infra-red thermometer) from Sears to "shoot" the coolant temperature on the thermostat housing as a secondary coolant temperature check of the gauge on the dash and electrical sensor in the engine. Always remember the electrical temperature sensor which is screwed into the cylinder head "reads" coolant temperature. The dash gauge, shows the information that the temperature sensor reads. Are you sure your electrical radiator cooling fans are switching on when the coolant reaches 212 degrees? We also hope your replacement thermostat and cooling system pressure cap came from the dealer of your car. If there any possibility that the thermostat was installed up-side down?

Answer 7

Dude, if you just put in a new radiator and a thermostat, check your hoses. Then check to see if you put the thermostat in upside down. Or just take out the thermostat and run it and see if it happens again. You've got something blocking the water flow and I bet it is either a bad thermostat or it's put in upside down.

Answer 8

Slobbery is the only one on track,why would you put in a thermosatat and new radiator if there wasnt already a problem.Check for engine compression getting in to cooling system.

Answer 9

There are times you could save yourself some money by taking your car to a trusted mechanic.

Answer 10

Did you make sure you don't have the Thermostat in backwards?Happens all the time. Better check!