Albin234 Posted August 6, 2023 Share Posted August 6, 2023 hello... I have a car Audi a3 2015 150 hp. Until the temperature reaches 90 degrees celsius it runs very well, then it starts to make a sort of echoing noise above 1600 rpm. what could it be turbo or what? Quote Link to comment Share on other sites More sharing options...
Steve Q Posted August 6, 2023 Share Posted August 6, 2023 Had you had a diagnostic check to see if any fault codes flag up? Have you taken it to the garage? Does it do it over a certain speed? Does it do it through the entire rev range? 1 Quote Link to comment Share on other sites More sharing options...
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