Blows cold air only

Tiny
CHRIS GOERS
  • MEMBER
  • 2009 CHEVROLET EQUINOX
  • 3.4L
  • V6
  • FWD
  • AUTOMATIC
  • 85,000 MILES
Blows cold air only.
Monday, November 7th, 2016 AT 10:24 AM

13 Replies

Tiny
JIS001
  • MECHANIC
  • 3,408 POSTS
Have the damper motors re-calibrated. If it does not work then the temperature mode motor will need replacing and re-calibrated.
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Monday, November 7th, 2016 AT 10:38 AM
Tiny
CHRIS GOERS
  • MEMBER
  • 9 POSTS
Am working on it now. One hose cold to heater one hose hot. I am at temperature.
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Monday, November 7th, 2016 AT 10:41 AM
Tiny
CHRIS GOERS
  • MEMBER
  • 9 POSTS
Car was owned by mom dealer maintenance done until 80, 00 miles only had it six months.
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Monday, November 7th, 2016 AT 10:42 AM
Tiny
JIS001
  • MECHANIC
  • 3,408 POSTS
Which hose is hot? Is it the upper or lower heater hose? If it is the inlet hose (lower) then the heater core is most likely plugged.
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+1
Monday, November 7th, 2016 AT 12:13 PM
Tiny
CHRIS GOERS
  • MEMBER
  • 9 POSTS
Anyway to fix that short of replacing it?
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Monday, November 7th, 2016 AT 12:39 PM
Tiny
CHRIS GOERS
  • MEMBER
  • 9 POSTS
If I turn fan off and wait a couple minutes I get hot air for like a minute then it is just moderately warm.
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Monday, November 7th, 2016 AT 12:39 PM
Tiny
CHRIS GOERS
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  • 9 POSTS
Bottom hot, top coldish.
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Monday, November 7th, 2016 AT 12:40 PM
Tiny
CHRIS GOERS
  • MEMBER
  • 9 POSTS
Blend door motor sounds like it is working AC line cold and frosty.
Top hose coldIsh.
Bottom burning hot.
Top hose has bypass to fill jug and is also hot.
Air bubbles?
Blend door?
I have never really messed with HVAC on car except to replace this newer this thing has has so many wires etc.
Thanks in advance.
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Monday, November 7th, 2016 AT 12:45 PM
Tiny
CHRIS GOERS
  • MEMBER
  • 9 POSTS
And defrost blow cold like ice no heat at all, more like AC.
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Monday, November 7th, 2016 AT 12:51 PM
Tiny
JIS001
  • MECHANIC
  • 3,408 POSTS
Disconnect the heater hoses and try flushing out the heater core?
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Monday, November 7th, 2016 AT 1:01 PM
Tiny
CHRIS GOERS
  • MEMBER
  • 9 POSTS
Thanks.
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Monday, November 7th, 2016 AT 1:47 PM
Tiny
JOHNNY G.JR
  • MECHANIC
  • 320 POSTS
Try reverse flushing the heater core.
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Tuesday, November 8th, 2016 AT 8:47 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,904 POSTS
It sounds like a blend door problem to me. Here is a guide that will give you an idea on how to fix it

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

Please let us know what you find so it will help others.

Best, Ken
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Saturday, November 12th, 2016 AT 12:49 PM

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