Heater blowing out cold air

Tiny
NESHA111
  • MEMBER
  • 2009 CHEVROLET COBALT
  • 123,232 MILES
My heat stop working when you turn the heat on it is blowing out cold air.
Thursday, January 17th, 2019 AT 6:03 AM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

Make sure you check your coolant level. Also, is the engine running at normal operating temperature? A bad thermostat could cause this.

https://www.2carpros.com/articles/replace-thermostat

https://www.2carpros.com/articles/car-heater-not-working

When you command heat and cool, can you hear the mode door move in the dash?

https://www.2carpros.com/articles/replace-blend-door-motor

Under the hood, the heater hoses, if you feel them, are they both hot?

Roy
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Thursday, January 17th, 2019 AT 9:37 AM

Please login or register to post a reply.

Related Heater Not Working Content

Heater Not Working
VIDEO
Heater Not Working
Instructional repair video
Heater Not Working
GUIDE
Heater Not Working
Step 1 - A heater cannot operate unless the engine is full of coolant/antifreeze. If coolant level is low check the system for leaks.

Sponsored links