Could use some heat...
Thread Starter
Racer
Joined: Aug 2003
Posts: 332
Likes: 0
From: The Great State of WI
Could use some heat...
Alright I've got a heater question...
So my heater no longer blows heat. I know that the water pump is cycling water through the system. When I feel the water lines going to and from the heater core the top one is extremely hot, and the bottom one is slightly less so. (I've been told that's an easy way to "test" the heater core) From what I can understand there is no reason why it should not be blowing good hot air.
A mechanic friend told me that there is a "cold air door" that might be stuck open do to a linkage failure. I guess that makes sense but if this does in fact exist, where is it?
I appreciate any suggestions...
So my heater no longer blows heat. I know that the water pump is cycling water through the system. When I feel the water lines going to and from the heater core the top one is extremely hot, and the bottom one is slightly less so. (I've been told that's an easy way to "test" the heater core) From what I can understand there is no reason why it should not be blowing good hot air.
A mechanic friend told me that there is a "cold air door" that might be stuck open do to a linkage failure. I guess that makes sense but if this does in fact exist, where is it?
I appreciate any suggestions...
Race Director
Joined: Feb 2003
Posts: 16,475
Likes: 270
From: Kingman AZ
Cruise-In VII Veteran
Cruise-In VIII
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16
Oh man, I remember a 30 degree below zero day at Ft McCoy Wisconsin. I had filled up my military diesel Blazer (CUCV) in southern, IL on the trip up to McCoy. Their fuel was not formulated for the cheesehead's cold weather. When I tried to fire that b***h up the next morning the fuel had turned to parafin. You NEED a heater in that state! 
Team Owner
Joined: May 2002
Posts: 24,337
Likes: 25
From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
I remember having a drilled tstat in my vette in 20 degree weather. You have to keep the coolant above 140 to use the overdrive in mine...
so I had to run the a/c.
Luckily I had no jacket, just short sleeves.
so I had to run the a/c.
Luckily I had no jacket, just short sleeves.
Team Owner
Joined: Feb 2006
Posts: 24,460
Likes: 7
From: sw Ohio
I have an '85 and it blows hot air out of all the vents once the car is warmed up. My overdrive wont engage until the coolant temp reaches aprox 125 degrees. Maybe we have different heating/cooling systems?
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Thread Starter
Racer
Joined: Aug 2003
Posts: 332
Likes: 0
From: The Great State of WI
ttt
I know that the water pump is cycling water through the system. When I feel the water lines going to and from the heater core the top one is extremely hot, and the bottom one is slightly less so. (I've been told that's an easy way to "test" the heater core) From what I can understand there is no reason why it should not be blowing good hot air. The fan is functioning properly.
A mechanic friend told me that there is a "cold air door" that might be stuck open do to a linkage failure. I guess that makes sense but if this does in fact exist, where is it?
I know that the water pump is cycling water through the system. When I feel the water lines going to and from the heater core the top one is extremely hot, and the bottom one is slightly less so. (I've been told that's an easy way to "test" the heater core) From what I can understand there is no reason why it should not be blowing good hot air. The fan is functioning properly.
A mechanic friend told me that there is a "cold air door" that might be stuck open do to a linkage failure. I guess that makes sense but if this does in fact exist, where is it?
Team Owner
Joined: May 2002
Posts: 24,337
Likes: 25
From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
Originally Posted by 4Ever21
I have an '85 and it blows hot air out of all the vents once the car is warmed up. My overdrive wont engage until the coolant temp reaches aprox 125 degrees. Maybe we have different heating/cooling systems?
Team Owner
Joined: Jan 2003
Posts: 20,324
Likes: 250
From: Summerland B.C. Canada