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International Automotive Technicians Network
Re: No Heat condition
Posted to HVAC Forum on 11/17/2023

Air pocket ? Use an Airlift and take your time. Does it only have one aux pump ? I don't recall the exact model , but I've seen more than one on an Audi. Did you road test it while watching ECT on the scanner ? Maybe the main pump has a broken impeller ? Login to read more.