Skip the auto shop - Our mechanics make house calls

Q: Weird smell coming thru a vents

asked by on

Hello, Lately I have been getting a weird smell coming thru the ac vents when I'm driving, I've also seen white smoke coming from vents, but underneath the hood had no smoke. In addition to this my car always has an issue holding coolant. Some days I won't have problem at all. And other days I have to keep putting water in my reservoir to keep some kind of fluid in my car. Do you know what the problem could be so I can get it fixed??

My car has 110000 miles.
My car has an automatic transmission.

White smoke through the vents can indicate a leaking heater core. Coolant circulates through the heater core which is behind the dash to provide heat. If no coolant leaks are obvious under hood, the heater core may be your culprit. I suggest having the cooling system pressure tested by one of our mobile technicians to locate the coolant leak for an accurate repair.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Weird smell coming thru a 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: My car shakes when it gets up to about 60 miles per hour feel like the tire is going to fall off

This may be caused by a variety of possibilities, however, I would start with checking tire pressure in all the tires checking to be sure the lug nuts on every wheel are tight and checking for any bubbles or warped...

Q: light smell of gas - 2016 Hyundai Elantra

Hi. It sounds like you are getting a gas vapor odor from a fuel tank venting system. The system is supposed to store the fumes in a carbon canister, and if excessive pressure builds up, this will vent to this...

Q: Air conditioning system stopped cooling and blows hot air even while adding refrigerant.

Hi there. Check the air conditioning system for any signs of leaks. Check all of the hoses and see if any of them have a hole rubbed in them. Check the compressor for any signs of leaks around the clutch...

Related articles

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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.