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

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!
  • 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: Having problems with the power steering.

You may have a bad power steering hose. If you are losing fluid, you will see it leaking somewhere under the car or you may see a wet hose under the hood. Sometimes when the hoses get old they will...

Q: Car hard to start and keep running.

A car not starting can be a frustrating experience. There are several different reasons as to why your Oldsmobile Silhouette is having difficulties starting. As a certified mechanic, the first investigation I would do is to see if this problem...

Q: What else can cause an over heating engine. .

Overheating in stop and go traffic can be due to non functioning electric radiator cooling fans. A poorly functioning water pump can be a cause, too, for example if the drive belt is not tight enough. If the car is...

Related articles

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...
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...
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...