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Why is my Audi Q7 2007 making a high pitch sound


owlsen

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when today morning i started my car every thing was fine till approximately after 15 to 20 min there was a high pitch sound coming from engine when driving and continued till i was idling as well as when i was parking.

what is this noise how can i stop it?

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Your Audi would be making the high pitch noise most likely due to a faulty PCV valve or a vacuum leak. If it is out of warranty I would be able to check it out.

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