A6 / S6 (C5 Platform) Discussion Discussion forum for the C5 Audi A6 and S6 produced from 1998-2004

No power brakes for 30 seconds-A6 2.7T

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08-23-2010, 07:55 PM

#1

TWANITA

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No power brakes for 30 seconds-A6 2.7T

When I first start up my 2001 A6 2.7T in the morning there is no power assist to the brakes for about 30 seconds. No pumping is required and then they are fine all day even after shutting off for several hours. Is there a vacuum reservoir that could be bleeding off overnight? Any other ideas?

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Old

08-25-2010, 04:25 AM

#2

Redneck Truck

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just check all your vacuum lines, the check valve on the booster, the suction pump, and the hose going to it.

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08-25-2010, 08:08 AM

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Mr. Timewise

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Can you show an image of the check valve? Where specifically it it located?

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27t, location, pump, suction

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