AC Problem Analysis
04-26-2013, 02:15 AM
#16
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Back on topic.
There are 5 servos total if I recall, and all prone to fail.
Used will occasionally show up on Ebay.
I currently have the failed left footwell servo in "manual" mode as Texas993 suggests.
Fresh air servo failed in "open" position fortunately.
I've take a couple of them apart, but they don't show that burned look like in the pix posted.
Gordo
There are 5 servos total if I recall, and all prone to fail.
Used will occasionally show up on Ebay.
I currently have the failed left footwell servo in "manual" mode as Texas993 suggests.
Fresh air servo failed in "open" position fortunately.
I've take a couple of them apart, but they don't show that burned look like in the pix posted.
Gordo
04-26-2013, 10:36 AM
#17
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Do they stay open until you select heat or do they close by default when you turn off the ignition?
04-26-2013, 10:58 AM
#18
Race Car
I really don't remember. I had some issues years ago with a different 993. I think that I replaced the servo (cheaper then). But I do remember being able to unplug it and open/close it manually. It isn't a permenant solution because it isn't that easy to do.
04-26-2013, 12:32 PM
#20
Rennlist Member
That's a cool schematic. Thanks for posting. Hopefully the mixing flaps servos are not in the door sills too 
04-26-2013, 01:42 PM
#23
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04-26-2013, 03:07 PM
#24
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That thread is a lifesaver.
I'm sure I could search for how to override a broken one to sit in the manually open position, but anyone care to share?
04-26-2013, 09:09 PM
#25
I disconnected the little driver motor from the servo body.
That yields access to a star-shaped receptor that will turn the servo damper blade.
This works for the footwell servos, but access to the cowl mounted servos is probably too snug for this to work.
The damper blade will not turn with the motor connected; if forced the blade will break.
Gordo
That yields access to a star-shaped receptor that will turn the servo damper blade.
This works for the footwell servos, but access to the cowl mounted servos is probably too snug for this to work.
The damper blade will not turn with the motor connected; if forced the blade will break.
Gordo
