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!

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 got my brake booster replaced that same day I noticed my brake pedal being to high up hard to push up and the shifts no respond

Hi there. Honestly, I'm somewhat confused as to why the brake booster was replaced by the repair shop, when your vehicle was 100% perfect taking it to the shop. The symptoms you have described are that of a failed brake...

Q: Car got hot and lost all spark,it turns over but thats it.

There may be a couple of possibilities at play here. The overheating issue may be related to a faulty thermostat, coolant temp sensor relay or potentially a blown head gasket. This can cause the car to run rough or not...

Q: How do I adjust the remote start heater and air conditioning?

When you use the remote start to turn on your vehicle, the climate controls can automatically adjust the temperature based on the outside temperature, or they can resume the temperature settings that you were using when you most recently turned...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...