Introduction
The windshield wiper motor transmission is a crucial component of the wiper system, responsible for converting the motor’s rotational motion into the up-and-down movement of the wiper blades. When this transmission fails, your wipers may become erratic, slow, or even stop working altogether. This article will guide you through troubleshooting the wiper motor transmission on a 1999 Lincoln Town Car, helping you identify the source of the problem and potential solutions.
Common Symptoms of a Faulty Windshield Wiper Motor Transmission
- Intermittent Wiper Operation⁚ The wipers may work sporadically, sometimes moving slowly, sometimes rapidly, or not at all.
- Slow Wiper Speed⁚ The wipers may operate at a much slower pace than usual.
- Wiper Blades Not Reaching Full Range⁚ The wipers may only move partially across the windshield, failing to reach the top or bottom.
- Unusual Noises⁚ You might hear grinding, clicking, or other abnormal sounds coming from the wiper motor area.
- Wiper Blades Stuck in a Single Position⁚ The wipers may become frozen in place, unable to move.
Troubleshooting Steps
1. Check the Wiper Motor Fuse
Start by examining the wiper motor fuse, which is typically located in the fuse box under the hood or in the passenger compartment. A blown fuse can prevent the motor from receiving power. Replace the fuse if it’s blown, and test the wipers again.
2. Inspect the Wiper Motor Linkage
The wiper motor linkage connects the motor to the wiper arms. Check for any signs of wear, damage, or loose connections. Ensure the linkage is securely attached to both the motor and the wiper arms. If you find any issues, repair or replace the linkage as needed.
3. Test the Wiper Motor
With the ignition on, use a test light or multimeter to check if the wiper motor is receiving power. If the motor is not receiving power, there may be a problem with the wiring or a faulty switch. If the motor is receiving power but not running, the motor itself may be faulty.
4. Examine the Wiper Motor Transmission
If the motor is receiving power and the linkage is intact, the problem likely lies with the wiper motor transmission. This can be a tricky component to access, and you may need to remove the wiper motor assembly to inspect it properly. Look for signs of wear, damage, or debris within the transmission. If you find any issues, consider replacing the transmission or the entire wiper motor assembly.
Conclusion
Troubleshooting a faulty windshield wiper motor transmission on a 1999 Lincoln Town Car requires careful inspection and testing. By following these steps, you can identify the source of the problem and determine the appropriate course of action. If you are unsure about any of the steps or are uncomfortable working on your vehicle’s electrical system, it’s best to seek professional assistance from a qualified mechanic.