SEAT Workshop Service and Repair Manuals > Leon Mk2 > Power unit | 4 cylinder Petrol direct injection engine, Mechanics | Mixture preparation system, electronic inj.,Gas | Lambda probes: removal and fitting | Engine code BLR and BVY. Removing and installing Lambda probeG39 and Lambda probe?2G108

Engine code BLR and BVY. Removing and installing Lambda probeG39 and Lambda probe 2G108

Engine code BLR and BVY. Removing and installing Lambda probe -G39- and Lambda probe 2 -G108-

t	Removing → Anchor

t	Installing → Anchor

Special tools and workshop equipment required

t	Special wrench -U-40080-

Removing

–	Remove the connector from the corresponding lambda probe.

Connectors for lambda probes before catalytic converter

1 -	Black connector for Lambda probe -G39- with Lambda probe heating -Z19- (for cylinders 1 and 4).

2 -	Brown connector for Lambda probe 2 -G108- with heating for Lambda probe 2 -Z28-, only for engine code BLR (For cylinders 2 and 3).

–	Unscrew the corresponding lambda probe using the spanner -U-40080-.

Lambda probes before the catalytic converter

1 -	Lambda probe -G39- withheater for the lambda probe -Z19-

2 -	Lambda probe II -G108- with heating for Lambda probe 2 -Z28-, only for engine code BLR.

Installing

Continue the installation in the reverse order of removal sequence, observing the following:

Note

t	The screw thread on the new lambda probe is coated with a special paste; the paste must not get into the slots on the probe body

t	If a lambda probe is reused, apply paste to the bolts when warm; the paste must not get into the slots on the probe body. Locking fluid for hot working bolts → ETKA (Electronic parts catalogue)

t	When assembling, the lambda probe cable must be fixed in its original position to avoid contact with the exhaust pipe.

t	Tightening torque: 55 Nm.

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