2000 accent

hey I have a 2000 accent, when i start the car, it runs fine. then when it runs for about an hour or so, the temperature gauge (next to spedometer) looks like it gets real warm (above hot) and the littlle
oil light faintly flashes. and the engine makes weird noises (sound bad) the noises sound like its about ready to stall and then it does. Ive had a few people suggest thermostat it was a 20$ fix so i did that, but still same result, I'm hoping its not what im afraid of the head gasket but if so I MAY be able to get around that or something... Thanks
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It sounds like your fan isn't kicking on. There are two coolant temp sensors. You may need to change the one that controles the fan relay. You didn't say anything to lead me to think your head gasket is bad yet, but you will have that if you don't fix the overheating problem, possibly even a warped or worse (cracked) head or block. Bill
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Thanks, well when it starts off with the fan is kicking on, but i only get the scary noises after it gets warmed up, in that case thats about an hour later, so im not sure if at that time the fan is on. do you know what sensor that is that controls the fan.. Thanks Alex
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Are you saying that the car overheats after it's run for an hour, and then starts making noise again, and chokes out and dies? As in... an overheated engine seizing up?
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The fan is controlled by your engine control module. The coolant temperature is reported to the engine control module by the coolant temperature sensor in the thermostat housing.
Before jumping into further repairs, you should make an audit of your cooling system's performance.
First, check your coolant level. If low, check for and repair any leaks.
Next, check for proper coolant flow. With the engine cold, remove the radiator cap and start the engine (a/c off). You should see the coolant circulate through the radiator prior to the fan turning on and prior to coolant boiling out of the radiator. If not, you have something preventing flow. In most cases, this is caused by a stuck thermostat, but can also be caused by a clogged radiator. If you have trouble seeing well enough into the radiator to tell whether you have coolant flow, you can feel the hoses. If only one hose is hot, the coolant is not flowing. If both hoses are hat, the coolant is flowing.
Once you've determined you have coolant flow, allow the engine to continue to run. The radiator fan should begin to cycle on and off as necessary to manage coolant temperature. It should continue doing this without the coolant boiling out of the radiator.
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