It sounds like you have a wiper motor that is going out or the wiper arms need to be repositioned. Here is a diagrams that will show you how to install the motor and arms. Double check to make sure one of the arms is not installed upside down or backwards.
Check out the diagrams (Below)
Please let us know what you find.
Images (Click to enlarge)
Monday, December 18th, 2017 AT 4:23 PM