1997ThunderbirdLXV6
PostWhore
Here's the observation: recently when I get into the car first thing in the morning, and I turn the A/C dial to "OFF" (as I habitually do before starting the engine), I hear...nothing at all.
I used to hear the recirculation door close. In other words, the vacuum in the system was maintained overnight.
Now I hear the door as the engine starts.
Functionality while the engine is running is normal, so I suspect a small/tiny leak. Where should I look? I imagine there are a few check valves along the way between the intake and the A/C system (?).
Meanwhile, also recently, I have the impression of slightly increased fuel consumption. I'm not entirely sure really; this may be due to my recent move. Just mentioning it as an aside.
I used to hear the recirculation door close. In other words, the vacuum in the system was maintained overnight.
Now I hear the door as the engine starts.
Functionality while the engine is running is normal, so I suspect a small/tiny leak. Where should I look? I imagine there are a few check valves along the way between the intake and the A/C system (?).
Meanwhile, also recently, I have the impression of slightly increased fuel consumption. I'm not entirely sure really; this may be due to my recent move. Just mentioning it as an aside.
