2005 Heater Temperature not consistent | Ford Thunderbird club group 1955-2005 T-Bird models

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2005 Heater Temperature not consistent

  • Thread starter Thread starter Pepere47
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Pepere47

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Thunderbird Year
2005
2005 with 48000 miles. DTCC was replaced 10,000 miles ago. A/C works as expected. Here are symptoms
1. When set at 71, blows cold air.
2. The distribution works OK; press defrost, blows through defrost; press vent, blows through vent, etc.
3. If temp set to 78, then some warm air arrives.
4. Symptoms the same for both left and right controls.

I am thinking that the temp sensor is not working properly or the blend door is malfunctioning.

Any wisdom out there from others with similar problems? Thanks in advance.

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What is a DTCC ? Did you mean DCCV?
Lots of heating and cooling system information and links to parts here-
biddle

Thread 'Air Conditioning Troubleshooting A/C Blows hot on one side 2002 2003 2004 2005 Thunderbird'

We're getting a lot of A/C posts on the forum, so I am going to start a thread. I'm not a mechanic, so please feel free to add your suggestions and recommendations for various scenarios. These recommendations below are based upon prior posts on the forum from Ford Thunderbird Owners.

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Common Scenarios

- Blows hot on the passenger's side and cold on the driver's side...
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Pepere47 said:
2005 with 48000 miles. DTCC was replaced 10,000 miles ago. A/C works as expected. Here are symptoms
1. When set at 71, blows cold air.
2. The distribution works OK; press defrost, blows through defrost; press vent, blows through vent, etc.
3. If temp set to 78, then some warm air arrives.
4. Symptoms the same for both left and right controls.

I am thinking that the temp sensor is not working properly or the blend door is malfunctioning.

Any wisdom out there from others with similar problems? Thanks in advance.
Click to expand...
Instead of reading my post, head over to the thread created by biddle! I had similar symptoms last year on my 05. It was the culprit was the dual-zone heater control valve. Low cost and simple to replace. I don't recall the diagnostic procedure to isolate it as the cause, but you should include this on your list of checks.
 
I had a similiar problem with my 2002. I don't remember where I read it but it advised calibrating the controls by lowering the heat to as low as it would go and holding the switch for a short period of time and then raising the control to high as it will go and holding the switch down for same amount of time. Repeat procedure for both sides. I done it twice to be safe. This solved my problem. Sorry about not remembering the time to hold it at each end ,but iit's been too since I done it.
 
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