No heat

Tiny
LWHITE177
  • MEMBER
  • 2007 DODGE CHARGER
  • V8
  • 2WD
  • AUTOMATIC
  • 47,000 MILES
I replace my thermostat and the heater still doesn't work. What do I do now?

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Wednesday, March 4th, 2009 AT 2:10 PM

17 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
It sounds like the mode blend door actuator is not working right here isa guide to show you step by step how to replace it with diagrams below to help you see on your car.

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

and this may help as well

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

Check out the diagrams (Below). Please let us know what happens.

Cheers
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Friday, March 6th, 2009 AT 6:56 PM
Tiny
RON85
  • MEMBER
Had the same problem for the last three days same car 2007 charger replaced thermostat water pumped reversed flushed the heater core caught the old antifreeze in a clear pail found corrosion. Got heat after doing this!
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Friday, December 23rd, 2011 AT 4:04 AM
Tiny
SLAWRENCE8522
  • MEMBER
I am a female and do not know about cars but since I looked at this post I was able to fix my car I love this site.
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Wednesday, February 24th, 2016 AT 10:35 AM
Tiny
2CARPROS-ARCHIVES
  • MEMBER
  • 2007 DODGE CHARGER
  • 98,270 MILES
My car heater blows only cold air. What so I need to do ro be hot. Is it the thermostat. Plz let me know what I need to check. Thanks
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Thursday, October 11th, 2018 AT 6:58 PM (Merged)
Tiny
HMAC300
  • EXPERT
Check coolant level first then after car is warmed up check both hoses to see if they are hot or about same temp. If they are it's an actuator in heater box that needs looked into.
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Thursday, October 11th, 2018 AT 6:58 PM (Merged)
Tiny
2CARPROS-ARCHIVES
  • MEMBER
  • 2007 DODGE CHARGER
Heat will not work
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Thursday, October 11th, 2018 AT 6:58 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
Make sure the engine is running at a normal operating temp. Check thermostat, make sure coolant is full.
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Thursday, October 11th, 2018 AT 6:58 PM (Merged)
Tiny
MSQLOVESLIFE
  • MEMBER
  • 2006 DODGE CHARGER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 112,000 MILES
I have had heat until this morning. The rear defrost works, but only cold air comes out. I made sure everything was on hot, then I put it on defrost, then I tried the vents.
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Thursday, October 11th, 2018 AT 6:58 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
Are you sure the coolant level isn't low? Does cold air come out the vents and the defroster? If so and the coolant is full, I need you to check something. Start the engine and let it warm up to normal operating temp. Turn the heater on hot / high. Feel both heater core hoses to see if they are hot. They should be. Let me know what you find.

Joe
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Thursday, October 11th, 2018 AT 6:58 PM (Merged)
Tiny
JASNPATLEW1
  • MEMBER
  • 2008 DODGE CHARGER
  • 100,000 MILES
1minute heat working come out next morn turn on heat, nothing. Blower does nothing. Not a sound. What's wrong. Is it a fuse, which we do not know were the fuse for the blower is even located. We're do we start, & then what's after that.
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Thursday, October 11th, 2018 AT 6:58 PM (Merged)
Tiny
HMAC300
  • EXPERT
Fuse 42 power dist boxl underhood. If not that have a pro check it because it may be a control or switch problem
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Thursday, October 11th, 2018 AT 6:58 PM (Merged)
Tiny
HUMBLE EMACULATE
  • MEMBER
  • 2008 DODGE CHARGER
  • 3.5L
  • 6 CYL
  • RWD
  • AUTOMATIC
  • 156,100 MILES
Hey, why does my car heater blow out heat then the air gets cold? Why does my heater take forever to come on? What is causing these issues? I have coolant in my car I also got rid of any air pockets?
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Thursday, October 11th, 2018 AT 6:58 PM (Merged)
Tiny
WRENCHTECH
  • EXPERT
Very first thing is check the coolant level to confirm it is full.

With the engine at full operating temperature, locate the two heater hoses where they go into the firewall and feel them to see if they are both hot to the touch. If they are both hot, the heat in that vehicle is controlled by a blend door that regulates heated air flow. It is operated by an electric motor/actuator. The problem can be that the actuator is stripped or inoperative or the door itself could be damaged. This is what needs to be determined by examining the actuator and see if it is responding to heat change commands or not.
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Thursday, October 11th, 2018 AT 6:58 PM (Merged)
Tiny
HUMBLE EMACULATE
  • MEMBER
Another thing I hear when I am driving is coolant swooshing around under my dash. Is that good?
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Thursday, October 11th, 2018 AT 6:58 PM (Merged)
Tiny
WRENCHTECH
  • EXPERT
That could mean you are low on coolant or that could be condensation water accumulating in the evaporator housing, not draining properly. Given your symptoms, I would assume low coolant.
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Thursday, October 11th, 2018 AT 6:58 PM (Merged)
Tiny
HUMBLE EMACULATE
  • MEMBER
Okay, thanks.
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Thursday, October 11th, 2018 AT 6:58 PM (Merged)
Tiny
KEN
  • ADMIN
Thanks for using 2CarPros we are here to help. Tell a friend!

Best, Ken
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Thursday, October 11th, 2018 AT 6:58 PM (Merged)

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