Question about 2000 Volkswagen Beetle

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Over the winter my water flange on my 2000 VW beetle, cracked. We noticed once the car over started flashing the high coolant temp alarm. I replaced the flange and re filled the engine coolant, now it gets to hot and boils the coolant every time, i just replaced the thermostat as recommended by a mechanic and sure enough took it for a test drive and still getting the over temp engine alarm and when i look under the hood the engine coolant is boiling in the reservoir. Any suggestions on what it may be? I have also replaced the reservoir cap as well.

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Hi.

i hate to be the bearer of bad news, but you may have a blown head gasket.

the coolant is probably not boiling in the reservoir, but if the head gasket has blown by a cylinder, some of the gas is escaping form the cylinder and bubbling up through the coolant.

a pressure check on the cooling system will confirm this, but you could also check the exhaust gas.
if it is white in colour, or has a sweet sugary smell, then this will mean that coolant is also being burnt in the cylinder.

please feel free to ask of you have any more questions.

Posted on May 25, 2011

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