A3 Quattro V6-3.2L (BUB) (2008)
Catalytic Converter: Service and Repair
Front Exhaust Pipe With Catalytic Converter And Front Muffler
Special tools, testers and auxiliary items required
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Ring spanner 7-piece set for oxygen sensor 3337
Removing
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If equipped, remove vacuum hose - 2 - to air guide hose.
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Disconnect air guide hose - 1 - at Throttle Valve Control Module J338.
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Disconnect Mass Air Flow (MAF) Sensor G70 electrical connector - 3 -.
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Remove upper section of air filter housing - arrows -.
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Remove filter element.
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Remove air guide cover - 1 -, to do so disengage clips sideways.
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Unclip air duct - 2 -.
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Remove lower section of air filter housing - arrows -.