Hello There. I have recently started to have a problem with the front wiper function of my CDTi150 estate (2005). On intermitent and slow spreeds the blades would move across the screen in a jerky manner and just stop at any random point in their movement. Now they do not work at all in these slow speed motions but full speed is absolutely fine and is the only setting I can use it on. If it works on fast it suggests to me the motor and lonkage must be fine. I presume there isn something controlling speed like a relay? Anyone know where it is or what it could be? The screen was motor does not work either unless fast speed on wipers is going too !!

Cheers