ok guys,
I'm not sure the two problems are related or not. but my vacuum actuators are acting up meaning i'm having problems with heat / cold climate controls. I had posted that issue right before the car went in for the service of A/C freon etc.
The dealer has told me that I'll have to replace the vacuum actuators, all six and quoted 9 hours just for labor. ahem !
the question is, does that somehow translate into fresh air not being able to be supplied to the cabin while the heat is on, resulting in loss of fresh air ( thats if there is such a concept of fresh air coming in as well while heat is on) and resulting in headaches due to lack of fresh air ?
the reason i ask is because with the heater off, and the vents on just for cold air there are no headaches.
the center vents aren't working while on the cold temp setting but then again that I know is because of the vacuum actuators....
any ideas ?

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