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Why does my Vw passat overheating while driving but ok while idling?
Wiki User
∙ 15y ago
Hey I think it's your water pump from my experience the water pump in the Passat are made from plastic and over time can break down resulting in overheating at high engine speeds.. a new aftermarket water pump is available with improved metal parts these cost the same and I am 80% sure this will resolve your problem.
Wiki User
∙ 15y ago
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