Audi Workshop Service and Repair Manuals > A3 Mk2 > Power unit | Direct petrol injection and ignition system (5-cyl. 2.5 ltr. 4-valve turbo) | Mixture preparation system, electronic inj.,Gas | Lambda probes | Removing and installing Lambda probe after catalytic converterG130 with Lambda probe 1 heater after catalytic converterZ29

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

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

Special tools and workshop equipment required

t	Lambda probe open ring spanner set -3337-

Removing

–	Lift off engine cover panel -1--arrows-.

Note

Fit cable ties in the original positions when installing.

–	Release hose clips -arrows- and detach air pipe -1-.

–	Remove electrical connector -2- for Lambda probe after catalytic converter -G130- from bracket and unplug connector.

–	Move clear electrical wiring for Lambda probe.

Note

Disregard -items 1, 3-.

–	Unscrew Lambda probe after catalytic converter -G130--item 1- using a tool from Lambda probe open ring spanner set -3337-.

Note

Disregard -item 2-.

Installing

Installation is carried out in the reverse order; note the following:

l	Tightening torque → Chapter „Lambda probes - overview“

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 probe body. For high-temperature paste refer to → Electronic parts catalogue

t	When installing, it is important to re-attach the Lambda probe wiring at the same locations to prevent it from coming into contact with the exhaust pipe.

t	Hose connections and air pipes and hoses must be free of oil and grease before assembly.

t	Do not use any lubricants containing silicone when assembling.

t	Secure all hose connections with the correct type of hose clips (same as original equipment) → Electronic parts catalogue.

t	To ensure that the charge air hoses can be properly secured at their connections, spray rust remover onto the worm thread of used hose clips before installing.

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