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.
2004 Lexus GS 430FACTORY OEM SERVICE PROCEDURE
Camshaft Position Sensor: Replacement
- REMOVE V-BANK COVER
- DRAIN ENGINE COOLANT
- DISCONNECT UPPER RADIATOR HOSE FROM FRONT WATER BYPASS JOINT
- REMOVE LH NO. 3 TIMING BELT COVER (See REMOVAL )
- REMOVE CAMSHAFT POSITION SENSOR
Remove the bolt, stud bolt and camshaft position sensor.
- REINSTALL NEW CAMSHAFT POSITION SENSOR
Install a new camshaft position sensor with the bolt and stud bolt.
Torque: 7.5 N-m (80 kgf-cm, 66 in.-lbf)
- REINSTALL LH No. 3 TIMING BELT COVER (See INSTALLATION )
- RECONNECT UPPER RADIATOR HOSE TO FRONT WATER BYPASS JOINT
- REFILL WITH ENGINE COOLANT (See COOLANT )
- START ENGINE AND CHECK FOR ENGINE COOLANT LEAKS
- REINSTALL V-BANK COVER
Factory Service Tools
Use the Manual With the Right Hardware
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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.