Understanding the Problem
* Wiper Motor: The wiper motor controls the movement of the blades. A malfunctioning motor can cause the blades to stop in an unexpected position.
* Wiper Linkage: The linkage system connects the wiper motor to the arms. Worn out, broken, or misaligned linkage can lead to improper blade positioning.
* Park Switch: This switch tells the motor where to stop the wipers. A faulty park switch can prevent the wipers from returning to the home position.
Troubleshooting Steps:
1. Check the Wiper Motor:
* Listen: Does the motor make any unusual sounds when you turn the wipers on or off? A clicking, grinding, or humming sound could indicate a problem.
* Test the motor: If you have access, disconnect the wiper motor connector and apply 12 volts directly to the motor terminals (be careful!). The motor should turn smoothly. If not, the motor may need replacement.
2. Inspect the Wiper Linkage:
* Visual Inspection: Look for any visible signs of wear, cracks, or broken parts in the linkage arms, connecting rods, or pivot points.
* Movement: Move the wiper arms manually. They should move smoothly with no binding or resistance. If there's any sticking or excessive play, the linkage may need lubrication or replacement.
3. Test the Park Switch:
* Disconnect the switch: Disconnect the electrical connector from the park switch.
* Jump the switch: With the ignition on, use a jumper wire to connect the two terminals on the park switch connector. The wipers should move to their home position. If they do, the park switch is likely faulty.
Possible Solutions:
* Replace the Wiper Motor: If the motor is faulty, replacing it is the solution.
* Repair or Replace Linkage: If you find damaged or worn linkage components, consider replacing them or seeking professional help for repair.
* Replace the Park Switch: A faulty park switch needs to be replaced.
Additional Tips:
* Safety: Always disconnect the battery before working on any electrical components.
* Professional Help: If you're not comfortable with automotive repairs, it's best to take your Cavalier to a qualified mechanic.
Important Note: If you're not comfortable with automotive repairs, it's best to take your Cavalier to a qualified mechanic. They can diagnose the problem accurately and provide the best solution.
