Hi, I'm a newbie! I have a 07 Dodge Charger. When I driving my AC blows warm air into the car through the vents while it is on the off setting and when I have the AC on I can smell everyones exhaust along with every other outside smell (unpleasent smells). I've just noticed that the AC does not get as cool when sitting in idle/park. Please help me figure out whats going on! I dont know where to statrt to look or how to figure out whats going on.cejackson21@gmail.com

 

the re-circulation door might not be closing off from outside air, ( or its broken) had that issue on my my ram 1500

 

All vehicles will have continuous air flow through the HVAC system even when in the off setting. In the summer, the air will be warm, cold in winter. Otherwise you would suffocate inside the car without fresh air..lol...

When sitting in idle/park, the engine is at low RPM's, thus not spinning the AC compressor as fast as when you are moving. It is normal for the air to get a little warmer at idle with the AC on. If it is bothersome, put the car in neutral and rev the engine a bit, it will start to get cooler.

As far as smelling everyone elses exhaust, this is normal as well, the system pulls in outside air. You can put the HVAC system on recycle instead of outside air to minimize the smell.

Your owners manual can explain the vehicles HVAC system.