Notices
Tech Talk Anything technically related to your vehicle should be posted here. If you're looking to have work done, try one of the Regional Forums.

NO HEAT out of vents

Thread Tools
 
Old Apr 17, 2008 | 07:58 PM
  #1  
mikethomas's Avatar
mikethomas
Thread Starter
Virginia Beach
 
Joined: Nov 2006
Posts: 170
Likes: 0
mikethomas can only hope to improve
Default NO HEAT out of vents

Top radiator hose is HOT bottom one is cool and both heater core hoses are HOT. Any ideas?
Old Apr 17, 2008 | 08:06 PM
  #2  
Fabrik8's Avatar
Fabrik8
Racetracks
 
Joined: Nov 2002
Posts: 15,668
Likes: 0
From: How long is a piece of string?
Fabrik8 Fabrik8 Fabrik8 Fabrik8 Fabrik8 Fabrik8 Fabrik8 Fabrik8 Fabrik8 Fabrik8 Fabrik8
Default Re: NO HEAT out of vents

Bad blower motor? Broken linkage or cable that shifts the air from hot to cool?
Old Apr 17, 2008 | 08:18 PM
  #3  
kanadaa's Avatar
kanadaa
Flesh Into Gear.
 
Joined: May 2006
Posts: 2,222
Likes: 0
From: 757
kanadaa kanadaa kanadaa kanadaa kanadaa kanadaa kanadaa kanadaa kanadaa kanadaa kanadaa
Default Re: NO HEAT out of vents

Are you getting ANY air out of the vents?
Old Apr 18, 2008 | 03:13 AM
  #4  
cleckner04's Avatar
cleckner04
fabricating is fun
 
Joined: May 2007
Posts: 865
Likes: 0
From: H-town
cleckner04 is an unknown quantity at this point
Default Re: NO HEAT out of vents

first off if you upper rad hose it hot and the bottom one is not that means two things. your thermostat is not working or your water pump is out. so that is something i would check. it has to be one of them two. but if you change out the water pump you might as well change the t-stat
Old Apr 18, 2008 | 04:09 AM
  #5  
ethan82000's Avatar
ethan82000
Registered Member
 
Joined: Mar 2008
Posts: 945
Likes: 0
From: hell
ethan82000 has a reputation beyond reputeethan82000 has a reputation beyond reputeethan82000 has a reputation beyond reputeethan82000 has a reputation beyond reputeethan82000 has a reputation beyond reputeethan82000 has a reputation beyond reputeethan82000 has a reputation beyond reputeethan82000 has a reputation beyond reputeethan82000 has a reputation beyond repute
Default Re: NO HEAT out of vents

Originally Posted by cleckner04
first off if you upper rad hose it hot and the bottom one is not that means two things. your thermostat is not working or your water pump is out. so that is something i would check. it has to be one of them two. but if you change out the water pump you might as well change the t-stat


no..ur bottom hose should be cool..thats wut puts the cooled down coolant back into the motor.....the top one is wut brings the boiling hot water back to the radiator...i agree with the blower motor or broken flap linkage not changing positions
Old Apr 18, 2008 | 11:17 AM
  #6  
civichatch1's Avatar
civichatch1
Registered Member
 
Joined: May 2007
Posts: 138
Likes: 0
civichatch1 has disabled reputation
Default Re: NO HEAT out of vents

I would say start by changing your thermostat
Old Apr 18, 2008 | 11:59 AM
  #7  
mikethomas's Avatar
mikethomas
Thread Starter
Virginia Beach
 
Joined: Nov 2006
Posts: 170
Likes: 0
mikethomas can only hope to improve
Default Re: NO HEAT out of vents

Yes the blower motor works. The truck does not overheat. AC works great even if you turn it to the red.
Old Apr 18, 2008 | 12:00 PM
  #8  
mikethomas's Avatar
mikethomas
Thread Starter
Virginia Beach
 
Joined: Nov 2006
Posts: 170
Likes: 0
mikethomas can only hope to improve
Default Re: NO HEAT out of vents

Originally Posted by ethan82000
no..ur bottom hose should be cool..thats wut puts the cooled down coolant back into the motor.....the top one is wut brings the boiling hot water back to the radiator...i agree with the blower motor or broken flap linkage not changing positions
So you think my t-stat is ok?
Old Apr 18, 2008 | 04:22 PM
  #9  
tmorey's Avatar
tmorey
Registered Member
 
Joined: Dec 2007
Posts: 20
Likes: 0
tmorey has disabled reputation
Default Re: NO HEAT out of vents

Originally Posted by mikethomas
Yes the blower motor works. The truck does not overheat. AC works great even if you turn it to the red.
sound like blend door problems if temp dont change
Old Apr 20, 2008 | 03:51 AM
  #10  
cleckner04's Avatar
cleckner04
fabricating is fun
 
Joined: May 2007
Posts: 865
Likes: 0
From: H-town
cleckner04 is an unknown quantity at this point
Default Re: NO HEAT out of vents

Originally Posted by ethan82000
no..ur bottom hose should be cool..thats wut puts the cooled down coolant back into the motor.....the top one is wut brings the boiling hot water back to the radiator...i agree with the blower motor or broken flap linkage not changing positions
ok so the bottom hose is cold but you said its going to be that way but your motor runs at around 190 degree. that doesnt make sense. i would check out your water pump and t-stat. because its not suppose to be cool. you cant grab it with your hands and say that cool. when its warmed up you can touch it and pull your hand off of it.



All times are GMT -8. The time now is 04:06 PM.