- Check the transmission fluid level and condition. If the fluid level is low or the fluid is dirty, it can cause the transmission to not shift properly. Adding the correct amount of fluid or changing it can fix the problem.
- Check the shift linkage. If the shift linkage is loose, damaged, or misadjusted, it can cause the transmission to not shift into reverse. Tightening, repairing, or readjusting the shift linkage may resolve the issue.
- Check the transmission mount. If the transmission mount is broken or damaged, it can affect the transmission's alignment and cause it to not shift properly. Replacing the transmission mount can solve the problem.
- Check the Transmission Input Speed Sensor. If the Transmission Input Speed Sensor fails or becomes dirty, it could give false signals to the Powertrain Control Module, causing the transmission to downshift into Neutral. To test this component, you can inspect it for dirt, debris, or damage and clean it, if needed.
- Check the Transmission Output Speed Sensor. Much like the Transmission Input Speed Sensor, a dirty or damaged Transmission Output Speed Sensor could create false signals within the Powertrain Control Module, causing an intermittent downshift to Neutral. This could also be remedied by inspecting the sensor and cleaning if necessary.
- Perform a computer diagnostic test. If none of the above solutions work, a computer diagnostic test can be performed to identify the specific problem with the transmission. This test can help to determine if there are any electrical issues, sensor malfunctions, or other problems that are causing the transmission to behave abnormally.
If none of these solutions fixes the problem, it is possible that your 1998 Ford Contour will need to have the transmission overhauled. It will be best to consult a professional mechanic to diagnose and repair the problem accurately.
