Question about 2001 Buick Century

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2003 century temp guage quikly goes to hot and back to norm

Rapid rise to hot and back to norm-- raise hood ---engine is not hot. This was happening every 3 or 4 months now daily. sometimes heater in car takes a long time to heat

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You need a new thermostat. These are cheap, but can be kinda difficult to change on some vehicles. Most of them can be done very easily though. Good luck hope this helps.

Sincerely,

JC

Posted on Nov 12, 2008

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Posted on Jan 02, 2017

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Heater only blows cold air vent blend door working fine


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You may have an air pocket in your system which some times happens.  One way to get rid of it is to take the upper hose off on the engine side,  fill your system with water until it runs out from your engine block, replace the hose, start your car turn you heater on and set to hi keep the radiator cap loose until the temp start to rise then close tight.  Once the air pocket had been remover you can drain some of the water from the radiator using the lower drain plug and add antifreeze.   

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Park facing uphill, raise front of vehicle so radiator cap is higher than top of engine. (You want bubble to get to radiator and out the cap.)
Leave cap on but loose, so bubble can purge.
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please Rate as fixya if this works. good luck

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