Pre-Catalytic Converter, Removing And Installing: Removing

WARNING: This page is about a different car, the 2015 Audi Q7, 2014 Audi Q7, and 2013 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Front/Rear Noise Insulation

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NOTE:

When installing, bring all cable ties back to same positions.

-- Remove the noise insulation -1 and 2-. Refer to NOISE INSULATION, REMOVING AND INSTALLING .

-- Remove the Heated Oxygen Sensor -G39-. Refer to Removing .

-- Remove the nuts -1, 2 and 3-.

Fig 2: Pre-Catalytic Converter Nuts Location

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NOTE:

Ignore -arrow-.

-- Remove the bolt -arrow- from the tab on the pre-catalytic converter.

Fig 3: Identifying Bolt -Arrow- From Exhaust Pipe

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-- Remove the nuts -arrows-.

Fig 4: Preliminary Catalytic Converter Flange Nuts

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-- Remove the pre-catalytic converter from the engine compartment.