yeterday, I replaced the rear wiper arm....I broke the tip off trying to replace the blade...no problems before....now, the wiper only operated for about 1/2 of the area...i.e. for 9-12 o'clock and sometimes 12-3 o'clock and does not work continuously....i.e. about every 10-15 mins.....also, now the rear washer does not work....any ideas?....thanks in advance...john

When you replaced the arm, did you align it properly? Thats the only thing I can think of.