Question about 2002 Kia Sedona

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Over heats bottom radiator hose cold when at running temperature, does'nt overheat at stand still , only on a drive, 5 miles + , temperature seems to drop a little when i slow down , have not driven it like this for long, last owner has recently replaced radiator and thermostat . it has around half a litre too much oil in the engine , and believe last owner was topping up with water , when header tank says coolant only ,, cheers guy

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Its the thermostat and possibly water pump in conjunction with a leak (at the cap most likely) that causes the water to boil and siphon out of the reservoir. The reservoir should not be "topped" off just fill to fill line.

Posted on May 14, 2010


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