Audi Workshop Service and Repair Manuals > A3 Mk2 > Power unit | Simos injection and ignition system (4-cylinder) | Mixture preparation system, electronic inj.,Gas | Injection system | Removing and installing Lambda probe after catalytic converterG130 and Lambda probe 1 heater after catalytic converterZ29

Removing and installing Lambda probe after catalytic converterG130 and Lambda probe 1 heater after catalytic converterZ29

Removing and installing Lambda probe after catalytic converter -G130- and Lambda probe 1 heater after catalytic converter -Z29-

Removing

Special tools and workshop equipment required

t	Lambda probe open ring spanner set -3337-

–	Remove underbody cover (right-side) -arrows-.

–	Unplug electrical connector -1-.

–	Detach connector from bracket -2- and expose wire leading to Lambda probe after catalytic converter -G130-.

–	Unscrew Lambda probe after catalytic converter -G130--arrow- using tool from Lambda probe open ring spanner set -3337-.

Installing

When installing, note the following:

Note

t	Threads of new Lambda probes are already coated with assembly paste; the paste must not get into the slots on the probe body.

t	In the case of a used Lambda probe grease only the thread with high-temperature paste. The paste must not get into the slots on the Lambda probe body. High-temperature paste → Parts catalogue

t	When installing, the Lambda probe wire must always be reattached at the same locations to prevent it from coming into contact with the exhaust pipe.

t	Tightening torque: 55 Nm.

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