Technical Windscreen wipers

[Paddynabs]

Happy Mondays all. I've had a search on the forum and can't find an answer so I'll ask! My windscreen wipers are playing up. The intermittent sometimes works and sometimes not. The times between sweeps are random and the wipers sometimes stop halfway. The main function also run slowly sometimes and then returns back to normal (during which I get radio interferance!).

Anyone have any ideas where to start? My first thought was rusty motor and or pivot arms but I don't want to dive in and find it's something else. Hope someone can help!

 

[FiatFleetFamily]

Happy Mondays all. I've had a search on the forum and can't find an answer so I'll ask! My windscreen wipers are playing up. The intermittent sometimes works and sometimes not. The times between sweeps are random and the wipers sometimes stop halfway. The main function also run slowly sometimes and then returns back to normal (during which I get radio interferance!).

Anyone have any ideas where to start? My first thought was rusty motor and or pivot arms but I don't want to dive in and find it's something else. Hope someone can help!

Can you check the insulation resistance of the motor from the fuse board ? Motor correctly earthed ? Gulley that the motor sits in, is it dry or wet ? Are your gulley drains clear, not full of leaves etc etc ? Can you see what current the motor is pulling when your wipers are on ?

 

[BikeDoc]

Radio interference suggests to me that you have an electrical joint arcing somewhere, due to corrosion or dirt on the contacts.
Could also be the motor contacts (commutator) arcing.
Both those would tie-in with the symptoms.

I'd follow FFF's suggestions first though.