Car temperature guage fluctuating

The quickest way to remove trapped air in a cooling system is, get the engine up to operating temperature. With the engine idling, slightly loosen the clamp for the upper radiator hose. Take a flat bladed screwdriver and slip it between the radiator hose and the hose neck of the radiator. Allow the engine to idle until all the air is purged from the cooling system. Retighten the hose clamp.

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