CCU, servos
10-02-2011, 04:35 PM
#2
Rennlist Member
Buy new servos from Porsche. Used units are probably as damaged as yours. Expensive though, but again available as spare parts after a shortage period.
The Porsche dealer here in Norway said to me that refurbished CCU's cannot be obtained within the Porsche system anymore. But why do you need a new CCU? It probably can be repaired with very good results.
Cheers,
Tore
www.ccu.tore.bergvill.com
The Porsche dealer here in Norway said to me that refurbished CCU's cannot be obtained within the Porsche system anymore. But why do you need a new CCU? It probably can be repaired with very good results.
Cheers,
Tore
www.ccu.tore.bergvill.com
10-02-2011, 06:51 PM
#3
I figured on buying new servos....looking for better pricing, if available at other than the dealer.
The rear blower is not working and will replace that too.
The CCU fan control is intermittent; sometimes takes off on it's own and runs on about speed 2.
From my research on this forum, finding a good rebuilder is nearly as pricey as a new CCU.
The rear blower is not working and will replace that too.
The CCU fan control is intermittent; sometimes takes off on it's own and runs on about speed 2.
From my research on this forum, finding a good rebuilder is nearly as pricey as a new CCU.
10-02-2011, 07:51 PM
#4
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I just received a rebuilt CCU from Porsche Germany through Sunset Imports in Portland OR. The cost was around $900. When I ordered it, it was in backorder status and took about 3 weeks to receive. I was going to rebuild it but I didn't feel comfortable, as I've heard stories of rebuilt ones failing again. And plus the rebuilt cost was high, I was quoted around $600.
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10-03-2011, 02:44 AM
#8
Rennlist Member
993/907, I do not know the history of your fault, but I hope you know that a faulty rear (AUX) blower will put the CCU into a special fault mode and intermittently shut down your interior fans.
If you have some electronics knowledge, or know someone who do, I could try to help you solving your problem.
Knowledge here means how to handle a voltmeter, and maybe also a oscilloscope. I would start to measure the output signal from the CCU to the front fan power module. Next would be to check the fan control potentiometer inside the CCU front piece.
Cheers,
Tore
If you have some electronics knowledge, or know someone who do, I could try to help you solving your problem.
Knowledge here means how to handle a voltmeter, and maybe also a oscilloscope. I would start to measure the output signal from the CCU to the front fan power module. Next would be to check the fan control potentiometer inside the CCU front piece.
Cheers,
Tore
10-03-2011, 02:06 PM
#9
Thanks Tore.
My indie shop is doing the work; OBDI shows a hard fault for the rear blower and one for the fresh air damper.
If I understand your suggestion, seems like the next step is to replace the rear blower as that may cure the CCU quirks; we will also replace the fresh air servo/damper.
Sound right?
Gordo
My indie shop is doing the work; OBDI shows a hard fault for the rear blower and one for the fresh air damper.
If I understand your suggestion, seems like the next step is to replace the rear blower as that may cure the CCU quirks; we will also replace the fresh air servo/damper.
Sound right?
Gordo
10-03-2011, 02:10 PM
#10
By the way, shop replaced both rear axles last week; CV boot covers torn, joints dried out and making noise.
What a difference with tight new axles...had not realized how much slop had developed in the drive train over the years.
I had suspected the noise was from LSD clutch packs but turned out to be the CV's.
What a difference with tight new axles...had not realized how much slop had developed in the drive train over the years.
I had suspected the noise was from LSD clutch packs but turned out to be the CV's.
10-03-2011, 02:20 PM
#11
Rennlist Member
Indeed, get the AUX fan in the back and the fresh air flap sorted, then you'll start thinking of fixing the CCU if necessary.
Cheers,
Tore
Cheers,
Tore
