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AC gates do not open on the dash. Does anyone

AC gates do not open on the dash. Does anyone have a vacuum line drawing?

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You will need to look at the area behind the dash to see if a line was left unhooked at the control panel for the a/c defroster selector. If as you said, a line was burned, you will need to find it further back behind the dash and replace it. An unhooked line will need to be reattached to a small device that may look like a bellows. The are back there is tight but if you had work done, you hopefully still have it open from the front. Any parts store can sell you the vacuum line you will need for this fix. Good luck.

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Volvo s40 1999 2.0 ltr sedan ticking noise behind ac knobs on dash for 10 seconds on start up. climate control works but selector wont fully function mainly to windscreen.

It sounds like the dampers are trying to operate but there is probably a l loose vacuum line that needs to be reconnected to make all of them work properly. You'll need to get under the dash and check to see that the vacuum lines are hooked up correctly. this can happen if anyone has been working in that area - installed a radio recently?

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1980 firebird esprit

Try and check all of your flapper doors and make sure they all have vacuum lines connected to them. These vacuum lines control different flapper doors depending on what setting your A/C and heating system are set at. For instance defrost opens the top flapper doors in your dash, bi-level opens the lower flappers and mid-dash flappers. What I would recommend is first checking each setting. Turn the car on and first run defrost. If both flappers are open then those are ok. Then run regular A/C, make sure the flapper doors are open to all the mid-level vents, if that is ok move on to the lower level setting and check that. This will help you pinpoint what doors are having issues. When you find the one that is not opening or not closing this will be the door and that is the one that does not have the vacuum hose connected. Let me know how everything goes.

Keep me posted - Tech101

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