Front exhaust system with three-way catalytic converter, V6
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Front exhaust system with three-way catalytic converter, V6
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Important
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The oxygen sensor cable must not be of twisted type. Twisted cables exposed to vibration can break.
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The oxygen sensor is sensitive to impacts and jolting and must be handled with care.
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1.
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Remove the front exhaust manifold's heat shield.
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2.
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Unbolt the front pipe from the turbo.
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3.
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Unplug the oxygen sensor's connector.
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5.
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Snip the cable tie securing the oxygen sensor cable. Note the way the cable is run and lower the cable.
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6.
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Separate the pipe joint between the front and rear exhaust systems.
Note
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Removal of the front exhaust system will be easier if a cable tie, part No. 83 95 212, is fastened round the front pipe.
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7.
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Detach the front exhaust pipe from the rear exhaust manifold and lower away the front exhaust system.
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8.
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Remove the oxygen sensor.
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Important
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The oxygen sensor cable must not be of twisted type. Twisted cables exposed to vibration can break.
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The oxygen sensor is sensitive to impacts and jolting and must be handled with care.
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1.
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Coat the oxygen sensor threads with Molycote 1000, part No. 30 20 971.
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2.
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Fit the oxygen sensor.
Tightening torque: 55 Nm (40.6 lbf ft).
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3.
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Fit the front exhaust pipe to the rear exhaust manifold.
Tightening torque: 40 Nm (29.5 lbf ft).
Note
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Removal of the front exhaust system will be easier if a cable tie, part No. 83 95 212, is fastened round the front pipe.
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4.
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Fit the pipe joint between the front and rear exhaust systems.
Tightening torque: 22 Nm (16.2 lbf ft).
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5.
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Use a cable tie to secure the oxygen sensor cable. Carefully run the cable back to the oxygen sensor connector.
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6.
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Lower the car to the floor.
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7.
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Plug in the oxygen sensor connector.
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8.
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Bolt the front exhaust pipe to the turbo.
Tightening torque: 24 Nm (17.7 lbf ft).
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9.
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Fit the front exhaust manifold's heat shield.
Tightening torque: 24 Nm (17.7 lbf ft).
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10.
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Start the engine and check for leakage.
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