BRAMMER

iTrader: (23)

Mk1 Sierra

Whats the cause of the wipers not returning to the start position?

Turn them on and they sweep the screen

Turn the switch off and the wiper stops dead

Needs sorting ASAP any help appreciated

Many thanks

Chris

Gav Diamond

iTrader: (6)

Mine does this on the 3dr and on my ST170, would love to know why too...

martysmartie

iTrader: (1)

Relay problem perhaps?

Martin

Iain Mac

As far as I remember there are two power feeds to the motor - one triggers it, and the other keeps it going after you turn off the switch.

If both the wires are getting juice, the motor has developed a fault.

AstoN_B

iTrader: (1)

Always wondered this! Also the intermittent adjust on my 3i would sometime not bother and wipe continuously. Or stop further up the windscreen each wipe. I put it down to worn motor.

Takeshi

Will be the wiper motor, had this on a Sierra, after trying a couple of stalks and relays. Either replace the motor, or strip it and clean up the pick up contacts and reassemble.

costina

iTrader: (1)

Is'nt there a limit switch inside the motor ?

if so its prob dirty.

BRAMMER

iTrader: (23)

Right update and problem still present:

I have removed the motor and linkage - cleaned all the points and plug refitted and the same is happening.

Changed the stalk and again no improvement.

The wiper adjust switch is working with the motor as the the speed alters

Findings - fast wipe and faster wipe work as they sweep the screen but when the stalk is stopped the wiper stops dead or hesitates and mover slightly downwards.

Intermittent works constantly for an average of 9 sweeps of the screen then stops dead and again try to hesitate to park position but doesn't make it.

As the cowling is off i can here a crackling coming from behind the lower section of dash which i assume is the relay, this isn't clicking it sounds fucked really so if anyone can point me in the right location for the relay.

Much appreciated

martysmartie

iTrader: (1)

lol, well I did tell you so !

The relay is in the fusebox.

Martin

BRAMMER

iTrader: (23)

Martin for some reason i assumed it was under the dash anyway.................

Right i did a bit of searching and found a little out - checked this and i'm not sure it's supposed to be this shape - my guess is something got hot - after a little more investigation this is where the crackling is coming from when the wipers are on - i'm hoping changing this may sort the problem out

BRAMMER

iTrader: (23)

Update the problem seems to have worsened - i have replaced the orange relay and now as soon as you put the ignition on the rear wiper constantly operates and the front has no intermittent still.

Where to go from here - why would the rear wiper constantly operate what would cause that?

The motor is actually operating fine as it seems to work in settings i presume the part that controls speed, intermittent etc is in the wiring and relays?

Anyone any idea's?