Removing and installing Lambda probe before catalytic converter G39 and Lambda probe after catalytic converter G130 (cylinder bank 1) — AUDI

Removing and installing
Lambda probe before catalytic converter
G39
and
Lambda probe after catalytic converter
G130
(cylinder bank 1)
Special tools and workshop equipment required
Lambda probe open ring spanner set
3337
Removing
Note
All cable ties which are released or cut open when removing must be fitted in the same position when installing.
Pull off engine cover panel (rear).
Move fuel line and line going to activated charcoal filter clear at air intake hose.
Detach vacuum line
4
at air intake hose.
Rest-of-world vehicles:
Disconnect hose
3
for crankcase breather system from air hose by pressing release tabs.
Release hose clips
2
and
5
and remove air intake hose.
USA models:
Release hose clips
2
and
5
and move air intake hose clear to one side (crankcase breather hose
3
remains connected).
Caution
Do not open hose connection
3
on USA models.
Note
Disregard
item 1
.
Detach air hose for secondary air system by pressing release tabs at ends of hose
1 ... 3
.
Note
Shown from rear with engine removed for illustration purposes.
Take corresponding electrical connector out of bracket and unplug it.
1
To
Lambda probe
G39
2
To
Lambda probe after catalytic converter
G130
Move electrical wiring to Lambda probes clear.
Note
Arrows
and
items marked 3 and 4
can be disregarded.
Unscrew
Lambda probe
G39
item 2
and
Lambda probe after catalytic converter
G130
item 1
using a tool from the
Lambda probe open ring spanner set
3337
.
Installing
Installation is carried out in the reverse order; note the following:
Note
Threads of new Lambda probes are already coated with assembly paste; the paste must not get into the slots on the probe body.
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. High-temperature paste
Parts catalogue
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.
Fit all cable ties in the original positions when installing.
Tightening torque: refer to exploded view of Lambda probes
Chapter
.