Discussion
Afternoon all
I've a problem with my wipers. They don't park. I thought the only cause for this was a dicky motor (the motor gearbox has some little tabs inside it that switch it off when it gets back to zero). So I took motor apart to look for evidence of broken ness. A little tab of metal fell out of the very gakky gearbox when I took it apart. I took this to be the offending article so bit the bullet and got a new motor.
Not only did it not park but it didn't have a second speed. Ie no super fast sweeping. So I took it back as faulty.
In addition to this the old wiper motor seems to cut out after Max 30secs on top speed but will plod on slow all day.
What on God's green earth is going on?
Do I buy another new motor in the hope that it all starts working?
Do I try and look for a fault in the wiring on the car that would explain the lack of park?
What can be the cause of the old motor cutting out at top speed?
Its a 99 306 with auto sensor if that helps at all.
This is one of many electrical gremlins which I hope to sort.
I've a problem with my wipers. They don't park. I thought the only cause for this was a dicky motor (the motor gearbox has some little tabs inside it that switch it off when it gets back to zero). So I took motor apart to look for evidence of broken ness. A little tab of metal fell out of the very gakky gearbox when I took it apart. I took this to be the offending article so bit the bullet and got a new motor.
Not only did it not park but it didn't have a second speed. Ie no super fast sweeping. So I took it back as faulty.
In addition to this the old wiper motor seems to cut out after Max 30secs on top speed but will plod on slow all day.
What on God's green earth is going on?
Do I buy another new motor in the hope that it all starts working?
Do I try and look for a fault in the wiring on the car that would explain the lack of park?
What can be the cause of the old motor cutting out at top speed?
Its a 99 306 with auto sensor if that helps at all.
This is one of many electrical gremlins which I hope to sort.
I find that with most things, if you take'em apart and a few bits fall out, then they don't quite work like they used to (most OEM's don't generally stick a few non essential parts into a device just for fun ...... ;-)
More usefully:
The "self parking" of wipers requires 2 switches to be shut 1) on the motor itself (that signals the wiper mech has reached the "park zone" and also one on the wiper switch (or the electronic control relay) that competes the circuit for "park shorting" when the switch i set to off (wipers actually short the motor to full "brake" mode when parking, otherwise the momentum of the system would keep them moving just enough to start wiping again as they run out of the park zone)
So i suspect that in fact the "braking" switch in your wiper control relay has gone for a burton!
(which also probably controls the speeds as well, so might explain why the motor speed is also funny)
More usefully:
The "self parking" of wipers requires 2 switches to be shut 1) on the motor itself (that signals the wiper mech has reached the "park zone" and also one on the wiper switch (or the electronic control relay) that competes the circuit for "park shorting" when the switch i set to off (wipers actually short the motor to full "brake" mode when parking, otherwise the momentum of the system would keep them moving just enough to start wiping again as they run out of the park zone)
So i suspect that in fact the "braking" switch in your wiper control relay has gone for a burton!
(which also probably controls the speeds as well, so might explain why the motor speed is also funny)
The bit fell out and it works exactly as it used to!!
The bit that fell out looked like it was one of the sliders on the park switch. There are three. One live, one earth, and one other. From memory it was the other. I can't remember whether the live was the switched live from the er... switch, or the permanent live that supplies power when the wipers are switched off.
I've replaced the two flip flop relays that seem to be controlled by the wiper switch. That didn't work. They don't appear on the wiring diags in the Haynes book of lies, so I was kinda stabbing in the dark. Anyone know if there are any more relays involved that are no longer clicking?
I implemented a highly irresponsible testing strategy on the way home today. Left it on full whack until it cut out, and waited. It came back on after a while. Then cut out after a while. So it sounds like the rain sensor is controlling the wipers when I thought it wouldn't be. The wipers aren't supposed to be auto on all settings are they?
The bit that fell out looked like it was one of the sliders on the park switch. There are three. One live, one earth, and one other. From memory it was the other. I can't remember whether the live was the switched live from the er... switch, or the permanent live that supplies power when the wipers are switched off.
I've replaced the two flip flop relays that seem to be controlled by the wiper switch. That didn't work. They don't appear on the wiring diags in the Haynes book of lies, so I was kinda stabbing in the dark. Anyone know if there are any more relays involved that are no longer clicking?
I implemented a highly irresponsible testing strategy on the way home today. Left it on full whack until it cut out, and waited. It came back on after a while. Then cut out after a while. So it sounds like the rain sensor is controlling the wipers when I thought it wouldn't be. The wipers aren't supposed to be auto on all settings are they?
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