Question about 1979 Pontiac Firebird

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Esprit vacuum Thanks Tech101, that was lightning fast!!! The problem is I can't see a pod missing a line even with a mirror. It actually seems to be working on all settings but not blowing as it should since the one door isn't switching all the way. I might have even left a pod out knowing me, I was younger 10 years ago lol. I'm getting ready to go to work now, but I'll pull the shift console out so I can get a better view this weekend. You helped me as much as anything with knowing what doors are supposed to control what level and direction. Much appreciated. Chris

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Hey Chris,

You're welcome. Thanks for the comments. If you need any help when you start working on it some mroe let me know if you have any questions. When you get a chance can you rate my solution? Thanks again - Tech101

Posted on Jun 27, 2008

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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

Jun 27, 2008 | 1979 Pontiac Firebird

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