Why when I start my car is there an odor coming from vents that smells like something is burning, and my Air Conditioner still blows, but it only blows out hot air. 2008 Chrysler Sebring. Help?

Are you loosing radiator fluid. sometimes the heater core will rupture and you will smell burn odor. also check for strange rubbing sounds or screeching coming from the blower fan motor. or engine exhaust manifolds are hot when car is on, make sure nothing is leaning on them which will cause a burn odor. Any odor coming from outside will find it's way inside through the fresh air vents.

Weird Car Air Conditioner Smell: What It Means and How to ...

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This causes an unpleasant odor coming out the air conditioner unit. Also ... This can result in a bad smell every time you turn on your air conditioner. You can ..

The front an rear are two different systems , That why the back still works . The blower motor or the resistor under the glove box or behind burnt up . Your best bet mite be to take your vehicle to a qualified repair shop.

this could be a hole in an AC line trace or have the lines traced replace and replaced Freon

You might want to look at all the hot surfaces under the hood. it sounds like something made of plastic is touching something hot.

check to make sure you dont have anything (plastic bag, etc) burned and stuck on the exhaust, othere than that it could be a normal smell associted with the different materials getting hot, i would compare it to another like vehicle and see, could also be trapped odors in the heater core caused by a previous smoker or bacteria growing, gm sells an odor elimnator that works pretty well

Hi, If I knew more of what kind of an odor you smell might help? Does it have any effect on the power of the blower motor in heat or cool as far as the speed or any noise as a bearing, burned wiring smell? I am just trying to nail down possibly a problem in the motor. If not, what I think may have happened if it is like a dead rodent smell, something may have crawled in around the blower wheel and past away if this is the kind of smell you have. This motor is the same for both heat and cool. If you want to get down to the blower motor, you will need to go both from under the dash and firewall to excess the motor. If it is a dead mouse lets say, it is either going in to find it which it could even be in any one of the air vents?? May be hard to locate it. If its the motor windings going out, you will know this smell as it would be like burned electrical wiring and the motor would be giving you problems. If this smell is more like a rodent smell, you may have to ride it out as it will in time dry completely out and go away? You have done what most all of us would do in this situation. Take a mouse for instance. They can come in from a field outside and go just about anywhere they want to in your car. If one did go up in to the enclosed air system which there are openings that they can squeeze into and die, chances are you would have to remove all of the duct work and blower housing to find it. Instead of using sweet smelling deodorants, check with a local janitorial supply house that have commercial products that they can recommend to you in this case and take care of this problem? It would be worth the time to do this, that's for sure! Something that they can blow down around the air intake under the hood that wont harm you or the system, be sure of that. I would say that either wait if its the smell I think, try the supply wholesale house, or the most time consuming and $$$ way is to remove all of the duct work and blower housing to try and find it. I hope this has been of some help to you, I'm sure it is very frustrating to have to smell this. Keep me posted on it please. Good Luck,
Sincerely,
Shastalaker7

have you checked your converter on the exhaust

there,s a chance that your hot-cold air trap is not working

Forget the radiator tank. Your AC 'Condensate drain' hose is plugged up. This is a common problem. If you know where the hose comes out under the car you can ( carefully ) push a wire up it. If you're lucky it's plugged near the end by a mud-dauber wasp. If not, take it to your dealer and see if you can persuade the write-up guy to show you where the drain outlet is as a gesture of good faith. If they insist on charging you money, consider that when you buy your next car...