Question about Porsche 911

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I have a 1999 Porsche 911 it overheats on side street but not on the freeway. All radiator fan works including engine fan. Any suggestion?

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Air pockets develop over time and what most people do not realise is that the cooling system of the car loses water through damp over time. when there is not enough water in the cooling system it pushes air through which rapidly heats up. on the highway higher speeds cool things down. but lower speeds not. open the waterbottle cap when the car is totally cooled off. not hot. never when its hot. this will create more air pockets in the cooling system. open the bottle cap and fill it up full. start the engine and add water. if you car has an aircon switch it on to full. this will push air pocket out off your cooling system. as bubbles blow out keep on filling water until cooling system is bled. good luck

Posted on May 08, 2010

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