To remove
IMPORTANT:
The oxygen sensor cable must not be of twisted type. Twisted cables exposed to vibration can break.
The oxygen sensor is sensitive to impacts and jolting and must be handled with care.
- Position the car on a lift.
- Remove the upper engine cover.
- Remove the turbo pressure hose together with the turbo bypass pipe and valve.
- Plug the charge air cooler's outlet.
- Remove the exhaust manifold's heat shield.
- Remove the crankcase breather pipe between the turbo intake pipe (minding its sealing washers) and cylinder head and the hose from the oil trap. Bend the pipe aside.
- Detach the turbo intake pipe. Bend the pipe aside.
- Detach the turbo's outlet hose to the charge air cooler.
- Remove the radiator fan. See RADIATOR FAN, V6 .
- Pinch the inlet and coolant return hose to the turbo. Use hose pinch-off pliers, 30 07 739 HOSE PINCH-OFF PLIERS .
- Remove the turbo coolant pipe.
- Undo and remove the dipstick tube.
- Remove the front pipe from the turbo.
- Unplug the oxygen sensor's connector.
- Raise the car.
- Snip the cable tie securing the oxygen sensor cable. Note the way the cable is run and lower the cable.
- Separate the pipe joint between the front and rear exhaust systems.NOTE: To facilitate removing the front exhaust system, sling a strap, 83 95 212 STRAP , around the front pipe.
- Detach the front pipe from the rear exhaust manifold. Lower away the front exhaust system.
- Remove the turbo's oil return pipe.
- Remove the turbo mounting bracket.
- Detach the oil pipe from the oil filter adapter.
- Lower the car to the floor.
- Undo the nuts securing the front exhaust manifold.
- Remove the front exhaust manifold with turbo.