RE: [DMCForum] VACUUM DIAGRAM
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RE: [DMCForum] VACUUM DIAGRAM



Check out the actuators for the HVAC doors... I believe leakage is part
of the design on many GM systems, and this may use similar components.
The brakes will actually "use" the vacuum on each pedal press, causing
the need to "replenish" the supply.

 

Maybe you should get a little venturi tube mounted somewhere with an
anti-reverse switch to build some vacuum while the vehicle is in motion?

 

-Dave

 

________________________________

From: DMCForum@xxxxxxxxxxxxxxx [mailto:DMCForum@xxxxxxxxxxxxxxx] On
Behalf Of Bob Brandys
Sent: Tuesday, April 08, 2008 7:36 PM
To: DMCForum@xxxxxxxxxxxxxxx
Subject: Re: [DMCForum] VACUUM DIAGRAM

 

Vacuum leaks are a plague on electric cars. I was very surprised to 
find out how the D's vacuum components "normally" leak. The mode 
switch circuit is terrible. I have isolated just the power break unit 
and the vacuum storage canister and they have a slow leak that requires 
the vacuum pump to run every 30 seconds.

Dave has the same issue. I suspect the vacuum storage tank leaks. We 
be testing it soon. and let the group know.

Bob

 



[Non-text portions of this message have been removed]


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