Repair Safety Notice:
This information is for general instructional purposes only. Vehicle repair can be dangerous.
Verify all information, follow manufacturer service procedures, use proper tools and safety equipment,
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HMAC300
CAR REPAIR CONTRIBUTOR
48,601 POSTS
the ground inside the motor is probably not connected causing this. You'll probably have to get another motor to fix it. You might try a new circuit panel for the intermittent. Or your switch is bad and not grounding the wiper motor out.