E30 Wash/wipe relay problem

I have had the same problems on both of my E30's. Its in the intermittent mode when the wipers judder up the screen rather hastily right? Problems down to the tracks in the wiper motor which tell the system to provide power to the motor during the wiper cycle. Apparently you can take the motor out and clean up the tracks.

My advice? Don't bother with the cleaning or fitting a secondhand one. Spend the money and get a brand new Bosch sealed unit from Euro for around £65 + vat. Problem solved once and for all.

I have the same prob on my 320i i agree with rezaq on the retun track being faulty.

Knowing the way they work it must be worth stripping old unit down and checking condition of track before spending £65+vat.

I will be removing mine on sunday (anyone know how to get at it. havent got me manual yet)

if the track is not burnt which you can check by cleaning away deposits with scotchbrite (the green stuf on the back of kitchen sponges)checking for cracks and arcs (black lunps)also check wiper is clean and free of arcs.

one final check if you have a multimeter check for conternuity  of the track by placing a piece of paper under the wiper to insulate it and checking from one end of the track to the other.(remove paper after check)

To test just plug back into loom and try.  good luk

 

 

I have a write up on the motor track on my site (see my profile for the link).

Thanks b318isp for your link.

mine all done works a treat  i had to do a bit more cleaning to get it all to work nice.

might be worth adding to your great site.

1,I had to remove corrosion from the 4-way plug on the motor,

2,I opened up the relay and with folded over wet & dry cleaned the relay contacts.

after doing this it was as smoothe as a babys bum.

 

try Wiper Motor intermittent sticking fix