Skip the auto shop - Our mechanics make house calls

Q: My car is starting to over heat and lose speed and I lost heat as well. There is a white smoke coming through my vents

asked by on

My car over heats causing it to lose speed. White cloudy smoke starts coming through my vents fogging the windows. My heat is also not working

My car has 154000 miles.

This sounds like the heater core may be leaking. Typical symptoms of a leaking heater core: smoke/steam through the vents, sweet smell, fogging of windows. The heater core is typically located behind the dash. It is part of the heating/cooling system. Coolant circulates through it to provide warm/hot air. Have the heating and cooling system inspected by a certified technician, such as one from YourMechanic, to verify the cause.

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
  • Home
  • Questions
  • My car is starting to over heat and lose speed and I lost heat as well. There is a white smoke coming through my 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 206 c230 v6 engines makes some unusual notice especially when I accelerate faster

The rattling noise may be due to the mass air flow sensor causing the engine to run leaner than it should be. This would cause the engine ping noise. You should have the engine scanned to check the mass airflow...

Q: Car won't start and security light is flashing?

The Pass-Lock security system can be effected if the battery was disconnected or dead, as well as if something like the ignition switch was replaced. Try these steps below. The Passlock has two basic relearn procedures—a ten-minute procedure and a...

Q: How do I seek for a radio station?

Seeking allows you to quickly and easily access all of the available radio stations. When seeking, the radio will find the next station that comes in clearly, and play it. To seek, quickly press and release one of the two...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...