See Figures 1, 2 and 3
The crankshaft position sensor is a variable reluctance sensor which is used to inform the powertrain control module when the No.1 piston is at top dead center. This information is used by the powertrain control module controlling and adjusting ignition and fuel injector timing.
The crankshaft position sensor is nonadjustable. It is triggered by a 36 toothed wheel on the crankshaft vibration damper and pulley. This toothed wheel is minus one tooth which serves as a reference mark for top dead center by PCM.
REMOVAL & INSTALLATION
When the battery cable has been disconnected and reconnected, some abnormal drive symptoms may occur while the powertrain control module relearns its adaptive strategy. The vehicle may need to be driven 10 miles (16 km) or more to relearn the adaptive strategy.
- Disconnect the negative battery cable,
- Unfasten the wire harness attached to the crankshaft position sensor.
- Remove the retainer bolts securing the sensor to the engine block.
- Remove the crankshaft position sensor from the engine.
- Position the crankshaft position sensor to the engine block and install the retainer bolts. On 3.0L engines, tighten the bolts to 35-62 inch lbs. (4-7 Nm). On 4.0L engines, tighten the bolts to 80-106 inch lbs. (9-12 Nm).
- Fasten the wire harness to the position sensor.
- Connect the negative battery cable.