More van fun, windscreen wiper

[moizeau]

Strange occurrence the other day. Operated the wipers to clear some dew in the morning then went to work. Switched the engine off and I could hear a regular knocking from the engine bay. The drivers wiper motor was pulsing a couple of mm's as if it was trying to find it's home position. It must have been doing it during the drive but the engine noise masked it. I gently pushed the wiper down a little and it stopped, I presume I assisted it home. Operated the wipers again with exactly the same result and pushing the wiper down a tad resolved it. Obviously can't do this whilst driving. What are the likely causes? I hope it's not on it's way out because sourcing a RHD RHS wiper in France will be fun. There is nothing obviously obstructing it.
Cheers

[Paul-R]

Which one of the vehicles was that?

[moizeau]

Sorry, I thought the title gave it away. 2010 Dispatch 16v 1.6HDI

[shtu]

I'd try disconnecting the motor from the linkage, and see if the motor self-parks then.

If it does, I'd have a look for problems with the linkage, eg, wiper spindles seizing up.

[moizeau]

Thanks shtu, could call.

[moizeau]

Well, the next day was continuous rain so the wipers were on all the time. When I turned them off, both politely went home so must be a sticky spindle or connecting rod. I'll do as suggested next time they play silly sods.