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Heat is not coming out


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hallow
New User

Dec 18, 2013, 6:51 PM

Post #1 of 7 (1835 views)
  post locked   Heat is not coming out  

It is a 3.1L 2002 Buick Century with roughly 140k miles on it.
Ok, my heater worked last winter perfectly and this year it is not. I did notice my car was leaking fluid during the summer so I took it to the shop and it was an intake manifold gasket issue. they replaced both my radiator hoses and my thermostat when it was fixed and was not sure if any of this stuff could be the problem. Both my radiator hoses are hot to the touch after the car has been running quite a bit and the car is not overheating. My grandfather and I took a look at it and noticed the fluid line to the inside of my car was cold and had little fluid in it. He thought it could have an air bubble in it or it has a bad thermostat. I take my car once a week for a 50 mile trip and it only heats up a little about 25 miles in. This is not a significant amount of heat either. Any ideas? Thanks


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Dec 18, 2013, 6:59 PM

Post #2 of 7 (1823 views)
  post locked   Re: Heat is not coming out  

With the engine at full operating temp, locate the 2 heater hoses where they go into the firewall and feel them to see if they are both hot to the touch. If not too hot to hold, then you have to look at the actual engine temp and if that is up, if it is, then your looking at a restricted heater core or poor circulation for another reason.
If you find that they are both too hot to hold, then 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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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



hallow
New User

Dec 18, 2013, 7:00 PM

Post #3 of 7 (1821 views)
  post locked   Re: Heat is not coming out  

The hoses are not hot. They are warm but I can still touch them without being burned.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Dec 18, 2013, 7:03 PM

Post #4 of 7 (1813 views)
  post locked   Re: Heat is not coming out  

If you can grab and squeeze those hoses without having to let go, then they are not hot enough. I would try removing both hoses and backflushing the heater core with a garden hose under pressure in both directions.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Dec 18, 2013, 11:26 PM

Post #5 of 7 (1800 views)
  post locked   Re: Heat is not coming out  

First post on this. Intake leaked and hoses and thermostat replaced? Was the intake manifold leak ever fixed? By the time you just keep adding coolant hopefully for a slow leak till fixed a problem frequently causes more problems.


If system isn't tight it will not stay full and air or vapor in system would be the up front problem. Cause needs to be found and fixed,


T



hallow
New User

Dec 20, 2013, 10:41 AM

Post #6 of 7 (1776 views)
  post locked   Re: Heat is not coming out  

Okay so I was able to get my car fixed. Yes the intake manifold gasket was fixed. The heater core needed to be flushed. and coolant replaced. The heat works perfectly now.


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Dec 20, 2013, 10:46 AM

Post #7 of 7 (1775 views)
  post locked   Re: Heat is not coming out  

OK - Closed as solved to keep spammers out. You can open by request to any moderator. Stay warm,


T







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