My windscreen wipers judder?

Before taking the car to be serviced today, the wipers worked perfectly. As soon as I drove out from the Citroen service dept, the wipers judder, what shall I do, Citroen say I must have new wipers, but they worked until the service, can I put washing up liquid on to the wipers or windscreen wash liquid. The Berlingo is only just 2 years old.
BSS, September 2007


done
clean the wiper blades and screen thoroughly with surgical spirit or alcohol gel, that should cure the problem.

tojo, September 2007
link Click here to see other fixes for Citroen Berlingo.