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Checking intake manifold changeover function > < Testing lambda probe signal wiring and activation

A4 Mk1

Motronic Fuel Injection and ignition system (4-cyl.) 07.96ä
Checking lambda control
Removing and installing lambda probe

Removing

  • ‒ Disconnect the connector to the lambda probe => Installation locations - Overview - Page 24-4.
  • ‒ Unscrew the lambda probe using V.A.G 3337/9.

Installing

Installation is performed in the reverse sequence.

Tightening torque: 50 Nm

Note:

The screw thread on the lambda probe is coated with assembly paste. This paste must not be allowed to penetrate the openings on the probe.

Checking intake manifold changeover function > < Testing lambda probe signal wiring and activation