(Toyota Avalon's) Engine Overheat Problem?

  • Thread starter Thread starter Jose Mourinho
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Jose Mourinho

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My Car has problem with engine overheat. This problem occurs only when I am not moving. I try differnet solutions and I found the problem is with the fans. The fans do not work properly. I mean they are late and when the heat goes up the fans stop working. Now I have to question:

1- How to resolve this issue? How much it costs?
2- Now, I make the fans work directly with the car. Is there any negative side effect?

Thank you all.
 
I'd start with buying a anti-freeze tester and testing the coolant's quality and mixture when the engine is cold.Don't mix it more then 50/50 by the way.Then squeeze the thermostat house just after engine is started , after a few mins pressure should build up especially once the engine hits its top idling temperature.If the pressure doesn't build up it's the thermostat that is faulty but bec it's a used car you just got I'd replace it anyways.In fact I'd flush the coolant system and add fresh anti-freeze but don't forget to check for rad leaks and hose leaks or soft hoses etc , just be sure if you replace any hoses that you use a new hose clamp too.
The fan should engage once the engine sits warmed up idling a bit and if not the fuse could be bad or relay or a wire or fan or temperature sensor.

Hope that helps and best of luck.By the way I've ran straight power to the fan's before via a dash switch in the past in a couple of vehicles and I've had no problems with it at all.
 
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