Question about 2010 Toyota Fortuner 4.0
My Fortuner V6 has started overheating. I have replaced the thermostat, water pump, water temp sensor, viscus fan and done pressure test. Vehicle runs normal in cooler weather as soon as it gets hotter the temp gage climbs and it will start overheating. It seems to be an intermittent problem?
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Posted on Jan 02, 2017
the cooling system deponds on a certain amount of pressure in order to function properly, Have you tested the radiator and cap for pressure, the cap should say how many #'S it is rated at.
Verify the cap is the proper application. Most systems are a closed recovery system these days, check over flow tank & all hose's and connections, for any possible pressure leaks, visualy if you are flowing through the radiator, after the stat opens the flow should somewhat resemble a strean with current. looking through the radiator cap opening. do you have a suffecient amount of coolant to water ratio? is it loosing coolant liquid or does it just smell hot at times?
Did the thermostat get installed properly? how hot @ peak temp is it reaching, normal operating temp is around 180f to 200f.
Is the belt for water pump tight enough?
If you try to answer these questions it would be very helpfull and we can continue to address each issue as it rares it's ugly face....
It most likely flows from bottom to top. we will also want to verify the gauge or light is functioning proper, and not giving a false reading, when you jumped the fan did you verify it was spinning in the proper direction.
Posted on Nov 01, 2010
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