Question about 1996 Mazda 626

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Replaced waterpump, thermostat,hose, coolant and car still overheats

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Let your car warm up and see if your radiator fan comes on if not needs to

Posted on Dec 10, 2012

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Posted on Jan 02, 2017

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SOURCE: overheats

It may sound odd but removing the thermostate all together may be your issue. The thermostate regulates by controlling the coolant flow. If the coolant moves too quickly thru a radiator it can actually pass thru with little heat loss to the air. (kind of like moving you finger thru the flame of a candle, quickly you never feel the heat) if the fluid travels too quickly thru the radiator it may pass thru before the heat escapes in to the air.
I'd replace the thermosate with a new (properly working) one and proceed from there.
I hope this may have helped,
Tom

Posted on Oct 02, 2009

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