Replacing absolute pressure sensor

REPLACING ABSOLUTE PRESSURE SENSOR

0,30÷0,35 daNm

• To remove the sensor, unscrew the screws indicated by the arrows.
• Always check condition of rubber vacuum intake pipe and if necessary replace with a new part or use a rubber pipe with max inner diameter of 2.0 mm and max length of 700 mm (+/– 10 mm) in order to ensure operating conditions are exactly as before.
• Ensure that pipe is well fitted and fastened at both ends.
• Ensure that the connector and body earth electrical connections are clean and undamaged.

REPLACING OXYGEN SENSOR OR LAMBDA PROBE

• Position vehicle on lift
• Disconnect electrical connections (1) and (2) from the Lambda probe
• Remove the Lambda probe from its seat
• When fitting, apply grease to retaining screw in order to ensure good thermal coupling. Recommended product is ANTI-SEIZE MATERIA-BORON NITRIDE N.GK. SPARK PLUG CO-LTD.

0,50÷0,60 daNm

• When tightening, do not force components because they could be irreparably damaged.

The electrical resistance measured using a digital multimeter at ambient temperature must be between 2.5Ω and 4.5Ω.

NOTE The probe can be swiftly put out of action by even small amounts of lead in the petrol. Functional checks are scheduled after 45,000 and 90,000 km in the programmed maintenance plan.