wipers wouldn't move when I use windsheild fluid
 

97' boxster

New wiper relay replaced but the problem now is when I use my windsheild fluid and the wiper would just stop moving, (stay at same position), instead of fulid on windshild and wiper moving up and down at the same time.

wiper would still moving back to normal position after I release using the windsheild fluid.

any one know the problem is? anything helps. Thanks everyone.