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E36/7 Z3 (1996-2002)
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  #1  
Old 05-16-2019, 08:42 AM
RogerEH RogerEH is offline
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Mein Auto: 1999 Z3
1999 Z3 power top

My 1999 Z3 top apparently didn't work for the previous owner so he had it converted to manual by turning the small T-emergency valve. It still seems to work hard to me, especially when trying to pull it back up. It goes down fairly easy probably just from the weight of it. My question is how do I know when the valve is open far enough? when/can it would be too far open? Right now it seems to be someplace in the middle as it turns both ways very easy. The instructions just say to turn the valve counterclockwise for emergency closing.

Thanks. There's lots of good info on this sight and lots of helpful people.
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Old 05-16-2019, 01:46 PM
NZ00Z3 NZ00Z3 is offline
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Mein Auto: 2000 Z3 3.0i
Wind it in until it stops, then wind it out about 4 full turns.

Common issues with the power tops are:
- faulty brake switch. The brake switch has two sets of contacts. One for the brake lights (very reliable) and one for the DME to control an number of things including the soft top (not so reliable)
- Faulty micro switch in the soft top side. The micro switch sets when you push the top up a bit to release the tension when dropping the top. Follow the wires up the side of the top to the micro switch at the knee on the mechanism.
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Old 05-16-2019, 03:33 PM
RogerEH RogerEH is offline
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Thanks, I'll try that. I'm assuming "in" means clockwise and out 4 turns would be counter-clockwise?
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1999 BMW Z3
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Old 05-16-2019, 03:41 PM
RogerEH RogerEH is offline
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Mein Auto: 1999 Z3
Oops, you can't do 4 full turns because there are only 2 full turns of travel. I set it at 1-1/2 full turns counter-clockwise from full in. Thanks for the advice.
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