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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 166 (Automatic Transmission - CVT) >> In-Vehicle Repair >> Output Shaft Speed (OSS) Sensor >> Removal

Output Shaft Speed (OSS) Sensor: Removal

WARNING: This page is about a different car, the 2005 Mercury Montego, 2005 Ford Freestyle, and 2005 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: MERCON®, MERCON®V, MERCON®SP, Motorcraft Premium Automatic Transmission Fluid and Motorcraft Continuously Variable Chain Type Transmission Fluid are not interchangeable transmission fluids. The use of any fluid other than what is recommended for this transmission will cause transmission damage.
  1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to JACKING & LIFTING .
  2. Disconnect the battery ground cable. For additional information, refer to BATTERY, MOUNTING AND CABLES .
  3. Remove the fluid pan drain plug and allow the fluid to drain.
    Fig 1: Locating Fluid Pan Drain Plug
    G03990683Courtesy of FORD MOTOR CO.
  4. Remove the fluid pan bolts and the fluid pan.
    Fig 2: Removing Fluid Pan Bolts And Fluid Pan
    G03990693Courtesy of FORD MOTOR CO.
  5. Remove and discard the fluid pan gasket.
    Fig 3: Removing Transaxle Fluid Pan Gasket
    G03990694Courtesy of FORD MOTOR CO.
    6. NOTE: Check the transaxle case to see if the filter pickup tube seal is stuck in the case. If the pickup tube seal is in the case it will need to be removed.
  6. Remove and discard the fluid filter.
    • Use a suitable seal pick to remove the seal if it is stuck in the case.
      Fig 4: Identifying Fluid Filter
      G03990695Courtesy of FORD MOTOR CO.
    7. CAUTION: Do not pull up on the wire harness. Damage to the wiring harness could result.
    Fig 5: Pulling Up On Output Shaft Speed (OSS) Connector To Disconnect
    G03990891Courtesy of FORD MOTOR CO.
  7. Depress the tab on the electrical connector and pull up on the output shaft speed (OSS) connector to disconnect.
    8. CAUTION: The OSS sensor has a spacer under the sensor for the bolt. This is used for keeping the sensor a specific distance from the differential gears.
    Fig 6: Removing OSS Sensor Bolt, Sensor And Spacer
    G03990892Courtesy of FORD MOTOR CO.
  8. Remove the OSS sensor bolt, sensor and spacer.
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