a few questions wiper prob/ and a studder

Th first problem is the driverside wiper does not work. the right side does. this tells me the wiper is not connected to the moter or the passenger side. i need to know how to remove wiper arm neatly. and any other advice any one can give.

when the sportage is cold and you put into gear after start up. it hesitates and almost stalls but wont act up after that. and has no problem when it is warm.

check linkage
1. remove little rubber cap at the end of wiper arm
2. loosen wiper arm nut
3. shake wiper arm moderately out of usual angle
4. can you remove wiper arms?
5. open the bonnet
6. remove grill (you need to unfasten bolt and fastener)
7. can you see the linkage?

thanks i thought it was held on by clips didnt know it was rubber bonnet. looks like onr of the arms snapped at the linkage. ordered replacement from california.