Finding the Exact Location:
1. Consult a Repair Manual: This is the most reliable way to pinpoint the sensor's location. A Haynes or Chilton manual for your specific year and engine will have detailed diagrams and instructions. Online resources like a subscription to AllDataDIY also provide this information.
2. Visual Inspection (with caution): Once you've located the engine's bottom, carefully look for a sensor that's relatively close to the crankshaft pulley. It will be a small sensor with a wire harness connected to it. Be extremely cautious near moving parts of the engine. Do not attempt this while the engine is running.
Replacing the Crankshaft Position Sensor:
Replacing the CKP sensor varies slightly depending on the specific engine and access, but generally involves these steps:
1. Disconnect the Battery: This is crucial to prevent accidental shorts and damage to the vehicle's electrical system.
2. Locate the Sensor: Use the repair manual to identify the precise location.
3. Disconnect the Wiring Harness: Carefully unplug the electrical connector from the sensor.
4. Remove the Sensor: You may need a socket or wrench to unscrew the sensor from the engine block. Sometimes it's held in place by a bolt, other times it might simply be clipped in. Again, your repair manual will guide you.
5. Clean the Mounting Surface: Before installing the new sensor, clean the mounting surface on the engine block to ensure a good seal.
6. Install the New Sensor: Carefully install the new sensor, making sure it's seated correctly. Tighten the bolt (if applicable) to the manufacturer's specified torque.
7. Reconnect the Wiring Harness: Securely plug the electrical connector back onto the new sensor.
8. Reconnect the Battery: Reconnect the battery terminals.
9. Clear any Diagnostic Trouble Codes (DTCs): After installation, use an OBD-II scanner to clear any trouble codes that may have been stored due to the faulty sensor. Failure to do this can trigger the check engine light to remain illuminated.
Important Notes:
* Safety First: Always disconnect the battery before working on any electrical components in your vehicle. Never work on a vehicle with the engine running.
* Repair Manual: A repair manual is essential for this job. It will show you exactly where the sensor is located and provide step-by-step instructions with diagrams. Improper installation can lead to further damage.
* Torque Specifications: Use the correct torque specification when tightening the sensor bolt to prevent damage. This information will be in your repair manual.
* OEM or Reputable Aftermarket Part: Buy a crankshaft position sensor from a reputable parts supplier (OEM or a well-known brand) to ensure quality and reliability.
If you're not comfortable performing this repair yourself, take your Oldsmobile Intrigue to a qualified mechanic. Attempting the repair without the proper knowledge and tools could lead to further damage to your vehicle.
