Right Side (CYL. 1-4)

REMOVE KNOCK SENSORS - RIGHT SIDE (Cylinders 1-4)
- Interrogate fault memories.
- Switch "Off" ignition.





- Unclip caps on screws for cover of cylinder head cover.
- Unscrew screws.
- Remove cover from cylinder head cover.





- Loosen hose clamps on idle speed control and throttle valve assembly.






- Disconnect plug on mass air flow sensor.






- Unclip and remove air cleaner upper section together with mass air flow sensor.






- Unclip caps on screw.
- Unscrew screws.
- Remove cover from cylinder head cover at right-hand side.






- Lift car.
- Disconnect plug on oil level switch.





- Disconnect plugs on ignition coils.





- Disconnect plugs:
1 = Knock sensor for cylinders 3 and 4
2 = Knock sensor for cylinders 1 and 2
3 = Pulse sender (on vibration damper)


CAUTION: Mixing up plugs of knock sensors will lead to engine damage!






- Disconnect plugs:
1 = Intake air temperature sensor
2 = Throttle valve potentiometer
3 = Idle speed control






- Disconnect plugs.
1 = Diagnosis socket (unclip from holder)
2 = Engine plug





- Unscrew mutual ground wire of ignition coils (3) close to rear engine suspension eye (4).





- Disconnect plugs of temperature sensors.
1 = Temperature sensor (black) for temperature gage
2 = Temperature sensor (white) for Digital Motor Electronic (DME).





- Remove holder (1) for cover of collector.
- Unscrew screws.





- Disconnect throttle cable.
- Compress nipple mounts at both retainers and press out of operating lever.





- Press nipple out of nipple mounts.
- Take cable out of nipple mounts.





- Take cable (2) out of rubber mount (1).
- Take rubber mount (1) out of holder.
- Remove throttle cable.





- Unscrew cover of cylinder head cover at left-hand side (cylinder bank 5 - 8).





- Routing of Throttle Cable
- Take out of holder (1).





- Route cruise control cable (1) underneath throttle cable (2).





- Routing of Cruise Control Cable on Cylinder Head cover.





- Disconnect plugs on ignition coils.





- Disconnect plugs.
1 = Camshaft sender
2 = Knock sensor for cylinders 5 and 6
3 = Knock sensor for cylinders 7 and 8

CAUTION: Mixing up plugs of knock sensors would lead to engine damage!





- Disconnect plug (1).
- Pull off spill hose (2).
- Unscrew screws at left and right hand sides and place expansion tank aside.





- Coolant Expansion Tank.





- Disconnect plug on oil pressure switch.





- Remove pipe of oil presure switch.





- Unscrew screws of wiring ducts on cylinder heads.





- Disconnect vacuum hoses on radiator.
- Loosen hose clamp.





1 = Tank vapor vent
2 = Vacuum supply for brake booster





- Disconnect vacuum hose at brake booster.





- Disconnect tank vapor ventilation hose at throttle valve assembly.





- Disconnect fuel feed and return pipes.





- Pull hose (1) off of end cover (2) on back of manifold.





- Unscrew bolts.

CAUTION: Pull off end cover together with pressure regulating valve straight back to avoid damaging vent pipe (1).





- Unscrew bolts.
- Remove manifold upwards.





Knock sensor 1 for cylinders 1 and 2
Knock sensor 2 for cylinders 3 and 4

INSTALLATION
- Clean contact surfaces of knock sensors on engine block.
- Reinstall in reverse order
- Torque to 20 Nm (14 ft. lb.)





NOTE: Check cover seal and gasket, replacing them if necessary.

CAUTION: Mixing up plugs of knock sensors would lead to engine damage. Routing of wires and connection of plugs must conform with original installation in car to avoid mix-up.

- Interrogate fault memories.
- Investigate stored faults.
- Eliminate faults.
- Erase fault memories.