it overheats then a mile or two later it regulates, then overheats again.....this continues the whole trip
Kia sedona 2003 overheating, Any ideas, i've changed thermostat and coolant temperature sensor, fan is workin?
Bottom hose obstruction, or pump impeller or bearing, could be the cause of failing to cool. Get a trouble shooting guide and follow the steps start with cooling system flush and pressure test. Run the engine with pressure gauge hooked up, look for pressure swings to indicate trouble according to chart. A soft hose can suck shut under load, or a large airlock can cause temp fluctuations. Head gaskets also can cause cooling problems.
Kia sedona 2003 overheating, Any ideas, i've changed thermostat and coolant temperature sensor, fan is workin?
Your cooling system might be plugged. Try doing a full radiator flush and fill. It's a little time consuming, but well worth it.
You need to check the New Thermostat for a Bleeding HOLE--
The Thermostat will completly close off the water supply..you can drill a very tiny hole in the thermostat to allow water to %26quot;squirt%26quot; thru..and I mean really tiny--like thin spagetti..or regular spagetti..TINY..its just a bleeder..
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Next is too operate the car...COLD..with the radiator Cap---removed..
Start the engine and time the water---as it moves into the radiator..
You should see water just start moving..
This should improve with a bleeder hole..
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That's it..if the water stays in Radiator...and the Cylinder Head..gets HOT--and immeadiatly water moves into the radiator..that's the thermostat operating..
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Be careful of the boiling water..Shut the Motor Down..and allow to cool once more before replacing the Radiator Cap..
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If there is no leaking fluid..the cooling system is pressurized..
You may want to try flushing the cooling system w/plain water..
Adding fresh Coolant..and see how that works.
