Question about 1999 Pontiac Grand Am GT

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My pontiac keeps losing antifreeze is it the water pump?

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The best way is to warm up car and look for leak. Could be loose hose clamps or rotten hose or water pump. Worst case scenario would be head gasket leaking.

Posted on Aug 28, 2010

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1 Answer

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It may be the intake manifold gasket that has gone bad and you may be losing the antifreeze in your engine. Pull the oil dip stick out and see if it' over filled and look under the oil cap, look to see if there is any sign of antifreeze in your engine oil. Under the cap would have a milky brown sludge and under the PVC valve too, if there is then your engine is on it's way out if you do not repair the leak. Antifreeze is corrosive to the engine bearings and it's been know that as low as 1000 miles will cause the engine to go bad with antifreeze in the engine. The intake manifold gasket is known to go bad in the 3.4 liter engines till 2004 where they came up with an upgraded gasket. Good luck and keep me posted.

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