Could it be the thermostat? How can I tell
I changed the radiator hose but the car is still running hot?
Check to see that the electric fan that cools the radiator is coming on when the car is running hot. If not you need to replace the cooling fans and control relay.Check for radiator blockage, remove radiator to replace with new to repair problem.Try replacing the thermostat, sometimes thermostats can open partially causing the effect you describe. Replace thermostat with new to recheck system.Have a pressure check done to see if antifreeze is still leaking. Check near the water pump for leaks, and check if see if the antifreeze is circulating, it will get real hot.
I changed the radiator hose but the car is still running hot?
thermostat
thermostat is sticking
Make sure you add your coolant!!!! :-)
thermostats are cheap and easy to replace. I would go ahead and change it out if you aren't sure. What prompted you to change the hose in the first place?
I would suggest the thermostat. The %26quot;very intelligent%26quot; person who asked why you changed the radiator hose I guess didn't realize that you changed it because your car was overheating! lol
Also, you should check your coolant reservoir and make sure you have it above the min line and below the max line.
Good luck!
Cooling systems are simple.
If they have water/coolant and it is circulating as is is intended it is working.
The thermostat if stuck can cause it to over heat.
because its a pressurized system (pressure causes the boiling temp to be higher) if the cap is bad it can cause problems.
Also if the radiator has has radiator stop leak put in it, that will restrict water flow.
last thing is water pump but that is easy to determine. obvious loud noise from barrings or open cap and see if water is circulating.
If you have a bad head gasket that will cause loss of coolant in time (short/or long) foam in the coolant and also cause high temps.
To test thermo you heat engine and squeeze the hose or you remove it put it in a pot on the stove with water and heat the water. See what temp it opens at or if it sticks. easier to just replace for $6
Changing the hose doesn't stop your car from overheating (unless the hose is leaking -- but then you would have seen it).
And adding more antifreeze doesn't do anything either. Your radiator should be filled up to the top with a mixture of 50/50 water/antifreeze mixture. If your radiator is not full, then that is why it is over heating.
Like everyone else said, it is the thermostat that allows water to circulate through your engine. If it is old, it might be sticking. Replace it next.
i have the best idea for helping with this problem. what kind of freaking car do you have. each car can have its own little set of common problems.
the radiator needs to be full and yes it can be the thermostat or the fan not working, the water pump or the cooling system needs flushing out.
