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Heating & Cooling 2nd Gen Dodge Ram Heating & Cooling Problems and Questions.


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  #1  
Old 11-05-2010, 07:57 PM
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Default Heater not working

K so my next step is to replace the heater core. But today i noticed that with the truck at normal temp where the heater core is it is hot to the touch. Could it be something else, or should i just go ahead with the core swap?
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Old 11-05-2010, 08:01 PM
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If you are getting heat into the area where the core is and its not coming out, it sounds like the blend door is broken or disconnected.

If you switch it from floor to defrost does the air movement change to the defrost vents?
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Old 11-05-2010, 09:01 PM
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Quote:
Originally Posted by RootBeer View Post
If you are getting heat into the area where the core is and its not coming out, it sounds like the blend door is broken or disconnected.

If you switch it from floor to defrost does the air movement change to the defrost vents?
Yes when i switch from floor to defrost it does change to the defrost vents. How do i check the blend door? Where is it?
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Old 11-06-2010, 12:39 AM
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Are the heater hoses under the hood hot to the touch ?
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Old 11-06-2010, 12:45 AM
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Originally Posted by Toms Blue Ram 1500 View Post
Are the heater hoses under the hood hot to the touch ?
Yes they are hot to the touch.
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Old 11-06-2010, 01:15 AM
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Originally Posted by 69speeder69 View Post
Yes when i switch from floor to defrost it does change to the defrost vents. How do i check the blend door? Where is it?
Now I'm not understanding your problem. If the heater is hot and you are getting air blowing out, what is it you are after?

Is the air coming out not hot regardless of switch position ie defrost, floor, vent, etc?
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Old 11-06-2010, 01:22 AM
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Ya whats happening is when i turn the heater on whether defrost floor or combo it will blow out fairly warm for about 5 seconds and then go to cool air. I have replaced the t-stat, also put a new radiator (not cause of the heater), am going to flush the system this weekend.
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Old 11-06-2010, 02:10 PM
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Quote:
Originally Posted by 69speeder69 View Post
Ya whats happening is when i turn the heater on whether defrost floor or combo it will blow out fairly warm for about 5 seconds and then go to cool air. I have replaced the t-stat, also put a new radiator (not cause of the heater), am going to flush the system this weekend.
Ok, I'm going to try and break it down based on what you've said.

1. Both heater hoses are hot to the touch. Not the radiator hoses. This means the heater core is not blocked.

2. You can switch from floor to defrost so the door is working.

Certainly doesn't sound like a heater core issue to me. One other thing to look at is the temp control lever. Does the temp coming out change when moving the lever/knob?

That's about the only thing left in my mind.
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Old 11-06-2010, 05:31 PM
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Certainly doesn't sound like a heater core issue to me. One other thing to look at is the temp control lever. Does the temp coming out change when moving the lever/knob?

That's about the only thing left in my mind.[/QUOTE]

Yes when i move the temp knob it changes temp. Goes from ambient temp to air conditioning cold
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Old 11-07-2010, 03:18 PM
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Just started doing the flush and now the heater core is leaking. Had daD look at it and that is the problem
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