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Guest Message by DevFuse

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coolant flow direction?

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3 replies to this topic

#1 Handtool


    Eat, Live, Breath Subaru

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Posted 12 January 2005 - 10:25 PM

'95 legacy, EJ-22. Can somebody confirm that the coolant is pulled from the block and pushed through the radiator by the water pump? Or is the pump fed by the radiator? Thanks.

#2 Setright


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Posted 13 January 2005 - 04:18 AM

Pump is fed by the radiator.

The coolant exits the engine at the top. That is why the coolant temperature sensor is located up there, in the collector pipe that the feeds the radiator top hose. The ECU wants to know the temperature inside the engine.

#3 Handtool


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Posted 13 January 2005 - 09:38 AM

Cool, that makes sense. Now the smaller line on the water pump that goes to the heater core, is that a feed or a return? Thanks.

#4 bearbalu


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Posted 13 January 2005 - 11:59 AM

Return - exiting heater core and feeding into water pump.

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