Went for a mad thrash on monday night, all windows working ok. Decided we needed the roof down to star gaze and next morning windows wouldn't work unless the passenger door was open. As soon as the interior light plunger thingy was depressed they would'nt work again so have ended up taking the plastic bit off the door so they work.
Any ideas?
Leccy window's playing up
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MONSPORT42
- E30 Zone Regular

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- Joined: Mon Jan 10, 2005 11:00 pm
- Location: Portsmouth
Had a similar problem on my Sport. Discovered that the windows circuit is earthed on the starter motor. Cleaned it up and it all works fine.

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- Brianmoooore
- E30 Zone Team Member

- Posts: 49358
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Problem here will affect heater fan and mirrors as well.MONSPORT42 wrote:Had a similar problem on my Sport. Discovered that the windows circuit is earthed on the starter motor. Cleaned it up and it all works fine.
- Brianmoooore
- E30 Zone Team Member

- Posts: 49358
- Joined: Mon Jan 10, 2005 11:00 pm
should be 30A.DazzyA wrote:Blown fuse alright, mine was 25a though.
Sorry to Hi Jack the thread but how do you mean earthed on the starter motor? I have this problem too 
Andy
Andy

M50B25NonVanos & M52B28Vanos Heads for sale. Pm Me.
- Brianmoooore
- E30 Zone Team Member

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- Joined: Mon Jan 10, 2005 11:00 pm
He's talking about the unloader relays. 12V+ from ignition on one side of the relays' coils, other terminal of the coils to earth through the low resistance windings of the starter motor.Andy325i wrote:Sorry to Hi Jack the thread but how do you mean earthed on the starter motor? I have this problem too
Andy
When the starter is engaged, this "earth" point becomes 12V+, giving no voltage across the relay coils, so they switch off and "unload" the circuits connected to them. (Roof, windows, mirrors, heater fan and seat heaters, if you have them.)

