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.
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HOMESERVICE MANUALSCHEVROLET1998ASTRO VAN 2WD V6-4.3L VIN WREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSCRANKSHAFT POSITION SENSORSERVICE AND REPAIRCRANKSHAFT POSITION SENSOR REPLACEMENT
1998 Chevrolet Astro Van 2WD V6-4.3L VIN W
Crankshaft Position Sensor Replacement
1998 Chevrolet Astro Van 2WD V6-4.3L VIN WSECTION Crankshaft Position Sensor Replacement
IMPORTANT: The CKP System System Variation Learning Procedure will need to be performed whenever the Crankshaft Position (CKP) sensor is removed or replaced. Refer to CKP System Variation Learn Procedure. Crankshaft Position System Variation Learn Procedure
REMOVAL PROCEDURE
1. Remove the electrical connector.
2. Remove the sensor hold down bolt.
3. Remove the sensor from the timing cover.
NOTE: When installing or removing a crankshaft position (CKP) sensor make sure the sensor is fully seated and held stationary in the front cover before torquing the hold down bolt into the front cover. A sensor which is not seated may result in erratic operation and lead to the setting of false codes.
4. Inspect the sensor O-ring for wear, cracks or leakage. Replace if necessary. Lube the new O-ring with clean engine oil before installing.
INSTALLATION PROCEDURE
NOTE: Make certain that the Crankshaft Position (CKP) sensor mounting surfaces are clean and free of burrs before installing the CKP sensor.
1. Install the sensor into the timing cover.
2. Install the sensor hold down bolt.
Tighten
^ Tighten the hold down bolt to 8 Nm (71 lb in).
3. Install the electrical connector.
4. Perform the CKP System Variation Learn Procedure. Refer to CKP System Variation Learn Procedure. Crankshaft Position System Variation Learn Procedure
REMOVAL PROCEDURE
1. Remove the electrical connector.
2. Remove the sensor hold down bolt.
Description:
3. Remove the sensor from the timing cover.
NOTE: When installing or removing a crankshaft position (CKP) sensor make sure the sensor is fully seated and held stationary in the front cover before torquing the hold down bolt into the front cover. A sensor which is not seated may result in erratic operation and lead to the setting of false codes.
4. Inspect the sensor O-ring for wear, cracks or leakage. Replace if necessary. Lube the new O-ring with clean engine oil before installing.
INSTALLATION PROCEDURE
NOTE: Make certain that the Crankshaft Position (CKP) sensor mounting surfaces are clean and free of burrs before installing the CKP sensor.
1. Install the sensor into the timing cover.
2. Install the sensor hold down bolt.
Tighten
^ Tighten the hold down bolt to 8 Nm (71 lb in).
3. Install the electrical connector.
4. Perform the CKP System Variation Learn Procedure. Refer to CKP System Variation Learn Procedure. Crankshaft Position System Variation Learn Procedure
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.