Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1999 Isuzu Rodeo LS 2WD V6-3.2LFACTORY OEM SERVICE PROCEDURE
Knock Sensor: Service and Repair
REMOVAL
1. Disconnect the negative battery cable.
2. Drain the cooling system. Refer to Draining and Filling the Cooling System in Engine Cooling.
3. Remove the engine cover.
4. Remove the common chamber assembly. Refer to Common Chamber.
5. Disconnect the electrical connector from the knock sensor.
6. Unscrew the knock sensor from the engine block.
INSTALLATION
NOTE: Do not apply thread sealant to the sensor threads. The sensor is coated at the factory and applying additional sealant will affect the sensor's ability to detect detonation.
1. Screw the knock sensor into the engine block.
Tighten:
2. Connect the electrical connector to the knock sensor.
3. Install the common chamber assembly. Refer to Common Chamber.
4. Install the engine cover.
5 Fill the cooling system. Refer to Draining and Filling the Cooling System in Engine Cooling.
6. Connect the negative battery cable.
1. Disconnect the negative battery cable.
2. Drain the cooling system. Refer to Draining and Filling the Cooling System in Engine Cooling.
3. Remove the engine cover.
4. Remove the common chamber assembly. Refer to Common Chamber.
5. Disconnect the electrical connector from the knock sensor.
6. Unscrew the knock sensor from the engine block.
INSTALLATION
NOTE: Do not apply thread sealant to the sensor threads. The sensor is coated at the factory and applying additional sealant will affect the sensor's ability to detect detonation.
1. Screw the knock sensor into the engine block.
Tighten:
2. Connect the electrical connector to the knock sensor.
3. Install the common chamber assembly. Refer to Common Chamber.
4. Install the engine cover.
5 Fill the cooling system. Refer to Draining and Filling the Cooling System in Engine Cooling.
6. Connect the negative battery cable.
Factory Service Tools
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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.