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.
2007 Saturn ION L4-2.0L SCFACTORY OEM SERVICE PROCEDURE
Camshaft Position Sensor: Service and Repair
Camshaft Position Sensor Replacement
Removal Procedure
1. Disconnect the negative battery cable.
2. Remove the drive belt tensioner.
3. Remove the underhood junction block.
4. Disconnect the electrical connector from the camshaft position (CMP) sensor.
5. Remove the CMP sensor studs.
6. Remove the CMP sensor.
Installation Procedure
1. Rotate the crankshaft until number 4 piston is at top dead center (TDC) on the compression stroke.
Refer to the crankshaft damper-to-front-cover timing marks.
2. Install the NEW camshaft position sensor housing seal.
3. Align the timing mark on the housing with the timing mark on the hex shaft.
4. Install the camshaft position sensor housing.
Notice: Refer to Fastener Notice.
5. Install the camshaft position sensor housing studs.
Tighten the studs to 22 N.m (16 lb ft).
6. Install the underhood junction block..
7. Install the drive belt tensioner.
8. Connect the negative battery cable.
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.