help with rear wiper motor

scfc_151 · Post by **scfc_151** » 30 Dec 2010, 15:30

I have a 306 estate with a bosch wiper motor that has now been replaced twice,

It needs doing again becasue its wiping really slowly and sounds very rough.
However, it will only wipe if I wiggle the blue relay.

Does this mean the wiring is dodgey as well as the motor or could it be the relay. I dont want to waste time replacing the motor if its not goin to work anyway.

I have tried securing the relay so it doesnt move but as soon as the boot is closed (probably cos its so heavy) im back to square one.

If I could do a wiring modification so that I can bypass the relay (ie. so when I turn the switch the wiper is on constant) I would do that as I only use the rear wiper before reversing etc.

Cheers

spider · Post by **spider** » 30 Dec 2010, 16:19

Inspect the relay for water (if you can take its lid off without breaking it, do so)

It's not unknown (usually the hatch though) for them to fill with water, which corrodes them internally. This also can blow a fuse which upsets the instrument panel too (from memory when this fuse blows only the alt charge light works)

There is (on the hatch, the estate should hopefully not be too dissimilar) a connector on the c pillar area, this is the 'rear' loom. You may want to see that's OK too.