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Heater not working

Tiny
BARBGUNNUFSON
  • MEMBER
  • 2007 NISSAN MURANO
  • 6 CYL
  • AWD
  • AUTOMATIC
  • 110,000 MILES
The blower for the heater will not turn on until after engine temp warms up. And it can take some time after the engine temp is up, depending on how cold it is outside. The colder it is outside, the longer it takes for the blower to turn.
Sunday, December 8th, 2013 AT 7:10 AM

8 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,709 POSTS
Hello,

It sounds like the thermostat is stuck open causing the problem. Here are two guides to help us fix the problem with diagrams below to help on your car

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

and

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

Check out the diagrams (Below). Please let us know what you find. We are interested to see what it is.
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Sunday, December 8th, 2013 AT 11:38 AM
Tiny
TURBOJAY
  • MEMBER
  • 1 POST
Thanks for this post I had this problem and a new thermostat fixed it for $34.00. I love this site
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Tuesday, January 29th, 2019 AT 1:29 PM
Tiny
SCIENCEFTW
  • MEMBER
  • 1 POST
  • 2007 NISSAN MURANO
  • 3.2L
  • V6
  • AWD
  • AUTOMATIC
  • 142,500 MILES
My Murano blows warm air only when the temp is set at the very top, otherwise it blows cold air.
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Tuesday, January 29th, 2019 AT 1:37 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
This is auto temp control so have it scanned as it can be a any sensor or actuator causing the problem.
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Tuesday, January 29th, 2019 AT 1:37 PM (Merged)
Tiny
2CP-ARCHIVES
  • MEMBER
  • 4,540 POSTS
  • 2007 NISSAN MURANO
  • 65,000 MILES
When its cold outside the heat do'nt work, when I come to a complete stop I feel cold air, then when I give it gas I then start to feel warm air. I hear a noise, and smell something burning.
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Tuesday, January 29th, 2019 AT 1:37 PM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Check the coolant level and thermostat.
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Tuesday, January 29th, 2019 AT 1:37 PM (Merged)
Tiny
TMDONAHUE
  • MEMBER
  • 1 POST
  • 2007 NISSAN MURANO
  • 6 CYL
  • AWD
  • AUTOMATIC
  • 43,000 MILES
Heater only works after car is warmed up or restarted after car has been on for a while whe n I turn on the car and hold down the off button on the heater a code of 2 and then 5 comes up. When it does kick on it works fine.
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Tuesday, January 29th, 2019 AT 1:37 PM (Merged)
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Hi
Code if 25 is for Sun sensor don't see that causing heater problem. System is quite complex and will need the BCM scaned to find fault. Is warranty out?
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Tuesday, January 29th, 2019 AT 1:37 PM (Merged)

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Step 1 - A heater cannot operate unless the engine is full of coolant/antifreeze. If coolant level is low check the system for leaks.

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