Q: Heavy toxic smell coming through AC vents

asked by on

Coming from engine area - intermittently I get a heavy toxic smell from the AC vents - what do I do? What is malfunctioning?

My car has 136000 miles.

Hi, thanks for writing in. This may be potentially a smell of AC refrigerant if you have a refrigerant leak. This sometimes happen when there is a leak in the AC refrigerant system. I would recommend having an expert from Your Mechanic come to your home to diagnose and repair this leak as it is very dangerous to inhale.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Heavy toxic smell coming through AC vents

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: I have a 2009 Scion xB and replaced the alternator. The engine is slightly shaking drove it around and the car was turning off on

Hello, thank you for writing in. As to the alternator wires, we cannot determine if they are connected correctly without an inspection. A weak electrical supply would cause the engine to run poorly. The air conditioner may or may not...

Q: I hear a cracking type sound when making sharp turns.

From what you described, this noise could be coming from the front bumper while turning, which can become dislodged during sharp turns and pop or clunk back into place when the wheel is turned to its original position. This will...

Q: Heater only works sometimes

The lack of heat being generated by your system may indicate a clogged heater core. The [heater core]((https://www.yourmechanic.com/services/heater-is-not-working-inspection) is a small radiator like unit that circulates the hot coolant from the engine through the heater core which then uses this...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...