Transmission Speed Sensor: Service and Repair

Mainshaft/Countershaft Speed Sensors

Replacement

WARNING: Make sure lifts, lacks and safety stands are placed properly, and hoist brackets are attached to the correct position on the engine.

1. Pull the carpet back to expose the secondary heated oxygen sensor (HO2S sensor 2) connector. Disconnect the connector, then push it out to the outside.
NOTE: The HO2S (sensor 2) connector is located under the passenger's seat.






2. Remove the HO2S (sensor 2) harness cover, then remove the three way catalytic converter.
3. Remove the exhaust pipe A cover, then remove the exhaust pipe A.






4. Remove the heat shields.






5. Remove the bolt securing the shift cable guide bracket, then remove the transmission beam.






6. Place a jack under the transmission, and raise the transmission just enough to take the weight off of the mounts, then remove the stop holder, the mid mount stops and the mid mounts.






7. Lower the transmission with a jack.
8. Remove the 6 mm bolt from the transmission housing, and remove the mainshaft and countershaft speed sensors.
9. Replace the O-rings with new ones before reassembling the mainshaft and countershaft speed sensors.
10. Install the washers on the mainshaft and countershaft speed sensors, then install them on the transmission housing.






11. Raise the transmission with a jack, then install the mid mounts. Tighten the mid mount bracket bolts, then tighten the mid mount nuts.
12. Install the transmission beam on the rear transmission mount bracket/mount, then tighten the three bolts loosely.
13. Tighten the three transmission beam bolts, then tighten the two transmission beam bolts to the specified torque.
14. Install the shift cable guide bracket on the transmission beam.






15. Install the heat shields.
16. Install the exhaust pipe A and the three way catalytic converter, then install the exhaust pipe A cover.
17. Push the H02S (sensor 2) connector into the vehicle, then secure with the harness grommet.
18. Install the H02S (sensor 2) harness cover.
19. Connect the H02S (sensor 2) connector.