My drivers side windscreen wiper has been making a loud clacking sound as it gets to the edge of the windscreen and starts to come back again and I can't see the wiper arm fouling on anything.
It happens occasionally at 70mph and on almost every sweep at 80mph, and the amount of rain falling doesn't seem to have any effect on it.
I have found that the spoiler on the wiper clips off so next time I take the car on a motorway I will try it without that on and see what happens.
Has anyone else had a problem like this?
Its a mk4 astra btw.