Question about 2005 Chevrolet Cobalt

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How do you know if your engine is overheating? the coolant says 210 degrees wut do i do

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  • poisn_ivy1 May 16, 2009

    yes it helps but where is the coolant located i see the windshield wiper fluid rite above it is an oranger liquid is that my anit freeze.. should i have my car flushed as i was told by a friend... my car has 50132 miles on it and i never changed the orange fluid.. im afraid its gonna cause more problems what should i do it goes from 185 to the highest i seen is 221 degrees what do i do.. thanx for the input guys

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When your engine is operating normally, the temp on the gauge should be between 190 and 225. The thermostat is set to open at 190 and this controls minimum engine temp. If you sit in traffic the temp will climb to 225 and then the cooling fan will begin to operate to make sure that you don't overheat.You know that water boils at 212 but you have to add 10 degrees for every pound of pressure the rad cap is set to. Also your coolant has antifreeze in it which raises the boiling point even more. A normal overheat condition of your engine would be 300 or more. Does this help?

Posted on May 15, 2009

  • Moe May 16, 2009

    Please rate any help or ask for more help. If we can help it would be nice to know that we did something. Thanks Moe

  • Moe May 18, 2009

    Moe here, You do not have an overheating problem because you are not getting fluid overflowing from your coolant system. The orange fluid in that reservior is your coolant. You may be used to a green fluid but that has changeed to orange to better deal with all of the different engine components. If you want to flush your system, check in the owners manual for the reccommended service mileage for coolant. Having the cooling system flushed at yearly intervals is a good thing. When you see your gauge go to 221, you are well within the perameters or your system. Does this help?

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Is there steam coming from the radiator ? Is the coolant reserve tank low ? Seems to me the cooling fan is not coming on when it should. The cooling fan is controlled by the tempature sending unit. The other problem could be the thermostat needs to be replaced.
I would first check to see if the fan is even coming on . Start the car let it warm up. Then turn on the a/c system . This will activate the fan faster then waiting for the vehicle to completely warm up. So if the fan comes on , then I would change the thermostat. I think the thermostat is sticking in the closed position allowing the engine to run to hot.

Posted on May 15, 2009

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