Front Exhaust Pipe With Catalytic Converters And Front Muffler

WARNING: This page is about a different variant/trim than selected.

Special tools and workshop equipment required

Removing

-- Disconnect the electrical connector on the mass air flow (MAF) sensor -G70- -3-.

Fig 1: Identifying Mass Air Flow (MAF) Sensor G70 Electrical Harness Connector, Clips & Front Air Intake Connector On Lock Carrier

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-- Open clips -1 and 2- and remove air guide hose from MAF sensor.

-- Remove front air intake connector on lock carrier -4-.

-- Remove engine cover.

-- Disconnect the electrical connector -arrow- for heated oxygen sensor (HO2S) -G39- and oxygen sensor (O2S) heater -Z19- and free up the wiring.

Fig 2: Disconnecting Heated Oxygen Sensor (HO2S) G39 Harness Connector

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-- Remove heated oxygen sensor -arrow- using a tool from the 3337.

Fig 3: Identifying Oxygen Sensor

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-- Remove the accessible nuts -arrows- for the front exhaust pipe/turbocharger from above.

Fig 4: Identifying Front Exhaust Pipe/Turbocharger Nuts

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-- Remove nuts -1- and -2- on oxygen sensor electrical connector bracket under vehicle floor and remove cover.

Fig 5: Identifying Nuts -1- And -2- To Oxygen Sensor Electrical Connector Bracket And Bolt -3- To Electrical Wiring To Oxygen Sensor

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-- Remove bolt -3- and free up electrical wiring to oxygen sensor.

-- Remove connector coupling from bracket -arrow-.

Fig 6: Identifying Electrical Connector -Arrow-

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-- Disconnect electrical connector to oxygen sensor (O2S) after three way catalytic converter (TWC) -G130-.

-- Remove the remaining nuts -arrows- for the front exhaust pipe/turbocharger from below.

Fig 7: Identifying Front Exhaust Pipe/Turbocharger Nuts

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-- Remove exhaust system bracket and tunnel brace -arrows-.

Fig 8: Identifying Crossbrace Bolts -Arrows-

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NOTE:

Do not bend the flex joint in the front exhaust pipe more than 10° or it could be damaged.

Fig 9: Identifying Clamping Sleeve -Arrows-

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-- Disconnect the exhaust system at the clamping sleeve -arrows-.

-- Remove front exhaust pipe with catalytic converter and front muffler.

Installing

Install in reverse order of removal. Note the following:

NOTE:

Replace gaskets and self-locking nuts.

-- Install exhaust system free of stress. Refer to EXHAUST SYSTEM, ALIGNING .