Question about 2007 Chevrolet Uplander LS Minivan

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When driving my 2007 uplander 80 / 85 mph , The temp.gauge goes slightly above the midway point.

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Average for higher rpm's create higher tempertures

Posted on Feb 07, 2010

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Posted on Jan 02, 2017

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1 Answer

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check grill and radiator fins are not plugged and fan is not damaged and is working.
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Hi Bajil, Have a diagnostic scan carried out and have the coolant temperature sensor and relay inspected for correct operation. It sounds as if a cable has become disconnected or that the operating circuit has become defective. The cooling circuit operation is correct when the fan operates when the engine temperature raises a fraction above normal. The fan will run for a number of seconds and then switch off, thereby maintaining the 'normal' operating temperature. Regards John

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Sounds like your coolant level might be low. At highway speed you probably have enough coolant and with the air passing thru the radiator keeps the temp down, but at idle not so much. Or depending whether you have a belt drive or electric fan. Belt driven, could need a new belt.

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Have a new thermostat installed and the radiator flushed.
( BTW,Are you sure your electric fan is operating correctly?)
Then if it continues it's probably okay. don-ohio

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Check to see if the fans are operational, anything below 35 MPH the fans cool the radiator, anything above is cooled by air passing thru rad.

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make sure the antifreeze is full. if so, replace thermostat and refill

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