Can a bad upper radiator hose cause overheating?
4) Collapsed radiator hose Hoses collapse when they become soft or weak or, occasionally, due to a cooling system fault. No matter the cause, an inspection must be performed– a collapsed hose cannot flow coolant properly which can result in the vehicle overheating and, eventually, engine damage.
Why is my upper radiator hose so hot?
The top radiator hose is usually but not always the location of the thermostat. Either-way, the top hose gets hot after the thermostat has opened. The time the thermostat takes to open depends upon factors such as: Coolant temperature.
Should the top radiator hose be hot?
Should the bottom radiator hose be hot? Bottom hose SHOULDN’T be hot. As that stuff is going into your motor to cool it, the TOP should be hot, as that is the coolant that has just cooled your motor. Hot coolant enters the top, flows through the radiator, out of the bottom, into the engine.
Should top and bottom radiator hoses be hot?
When an engine is warming up, the thermostat is closed, and neither the top or bottom radiator hose will be hot. Once the thermostat opens, hot coolant will flow to the radiator. The top hose will be hit, and the lower hose will be somewhat less so.
Can a 2000 Avalon overheat on a long hill?
My 2000 Avalon with 140 thousand miles will overheat on a hot day, at least the gauge shows so. On a long hill the needle will rise almost to the red. A couple times it was in the bottom of the red. I had it into the dealer last summer he drained and replaced the anti-freeze and could find nothing wrong.
Why does coolant level drop on Avalon XL?
I noticed on my 2000 Avalon XL that the coolant level in the overflow reservoir drops a couple inches every year. I understand that temperature affects the level reading; however, I usually check first thing in the morning and compare the readings in similar ambient conditions (i.e., similar weather conditions, etc.).
What happens when you put water in the radiator reservoir?
The water actually helps the coolant work better in your car. Second, coolant can vaporize in the presence of oxygen, so if it is in the reservoir, and its hot, it will evaporate. It will also weep out of the hose that leads back to the radiator from the reservoir.