940 SE L4-2320cc 2.3L SOHC Turbo VIN 87 B230FT (1991)
Oxygen Sensor (Lambda Sond): Service and Repair
Fig. 150 LAMBDA SOND
1.
Apply anti-seize (Volvo part number 1161035-9 or equivalent) to sensor threads.
2.
Ensure that no paste enters the slots on the tip. (This will render the oxygen sensor ineffective.)
3.
Torque the oxygen sensor to 40 ft.lbs (55 Nm).