I have 17 inches wipers and the one on the passenger would block the driver one so they get all curved its a mess! Its hard to explain. Have anyone experience something like that? The wiper engine was replaced 2 years ago...

 

If there's a lot of "slack" in the motion of the wipers, either the nuts that hold the wiper arms on are loose, or the wiper linkage is worn out and needs to be replaced. The linkage is a different part than the motor.

 

what car is this? year and trim?

 

Are you using the recommended size wipers? Do both arms move as they are supposed to?

 

Yea, you need to use the right sizes.

 

IIRC the pass side wiper blade is usually 2" shorter then the drivers side