Question about 1996 Lexus ES 300

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Loosing fluid. Lexus es300. 1995 How do you tell if the thermostat is about to go? Whats the best way to locate leaks? I have two leaks one is power steering, the other is radiator fluid. Heres the strange thing, The leaks aren't constant one day it will leak everything from the power steering resevoir completely out in two minutes. And then it will not leak a drop for two three weeks sometimes. The radiator is the same way. any theories?

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Sounds like loose hose lines.
As far as the thermostat goes you usually can tell by the temperature gauge going up past its usual spot it would normally warm up to.
It would go up some then when you reeved the engine it would return to normal.
when it starts doing that you should replace the thermostat, and flush the radiator.
Do not wait thinking it will be ok since it went back to normal because the next time you maybe out in the middle of no where and it breaks down where you can`t even get signal on your cell phone. Belive me if theres no tower around theres no signal LOL. well hope this helped you and stay safe not sorry.

Posted on Sep 10, 2009

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OK, this one is easier than you think. OK, to check a thermostat = you don't; you simply replace it. The best way to locate leaks is to have your vehicle raised on a lift into the air, while you have a coolant pressure tester on it while the car is on. You may find the leak is coming from a small hole under or on top of the water pump. You may find a clamp can be leaking, you may find a freeze plug leaking, you may find the leak only happens with A/C on, and more. the fact is you need have it in the air, car on and pressure on the system and be equipped with a powerful flashlight. You will find your leak! Oh almost forgot, some cars leak from the intake manifold (if equipped with one). The radiators nowadays are junk because they are made from alumminum and plastic, not steel. When testing as I recommend, you may find your leak on the seams on the right or left edges of the radiator where the plastic meets the alumminum. The pressure tester by Snap On tools is a magnificent way to test. good luck.

Posted on Sep 10, 2009

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Pressure test the rad, rad cap and system.
check for leak under dash inside pasenger side.
Vitally

Posted on Sep 10, 2009

  • Vitally Alcher Sep 10, 2009

    Pressure test the rad, rad cap and system.

    check for leak under dash inside pasenger side.

    Vitally

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