Master Vac. Switch

[snookwhaler]

Is the white switch known to go bad?

I plugged the line going to the A/C controls. I have pulled vacuum with a mighty vac from the front of the car on the line going to the main reservoir. It holds vacuum. I pulled 10 and left it there for a few minutes. I also pulled the drivers door panel and pulled the vacuum lines off the master switch on both the green and red lines. Both of those lines hold good vacuum with the other one plugged. I also pulled vacuum on the line going from the engine bay to the master vacuum switch. No leaks there either.

Here is what is happening. When I run the car, turn it off and get out to lock it... Most of the vacuum is already bled off and only a couple of the locks operate. If I sit in the car and run the engine for a minute or so, lock the doors, shut off the engine and sit there upwards of 5 minutes, then unlock the doors... They all work. Over 10 minutes and it bleeds off.

Basically when the locks are open is when the vacuum is being bled off quick. Is this a symptom of the master vacuum switch? Or could it be any of the other lock actuators as well?

There used to be a "pinned" vacuum troubleshoot guide at the top of the page. But every since "PeachParts", it has disappeared?