Knock Sensor: Service and Repair

1992 Volvo 740 L4-2320cc 2.3L DOHC B234F (Can)SECTION Service and Repair

Knock Sensor:





1. Disconnect the knock sensor electrical connector.
2. Remove the retaining bolt from the knock sensor.
3. Remove the knock sensor.
4. Reinstall the knock sensor and torque to:

15 ft. lb. (20 Nm)
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.