Question about 2000 Subaru Legacy

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I have a 2000 Subaru Legacy that overheats!

Changed thermostat, radiator and cap. water pump has no leaks and does not make any noise. the timing belt and belt tenstion is ok. there was still pressure on the cooling system after several days when i took the radiator cap off. compression good no water in the oil and no oil in the water. so what else could it be?

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Is the radiator fan scooping?

Posted on Apr 25, 2015

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There should be no pressure in a system when the engine is cold
the cap is designed to allow extra pressure to blow off into the over flow reservoir and as the system cols down there is a vacuum created in the cooling system which opens a valve in the radiator cap and draws coolant back from the reservoir
I suggest that yo have a radiator shop test the cap for operation and get a new cap

Posted on Apr 25, 2015

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