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Old Jan 20, 2011 | 05:29 PM
  #1  
Chaosracing's Avatar
Chaosracing
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Little heat

I am posting this for my dad. He has a 2004 F150 with the 4.6 engine. He has been getting luke warm heat in the cab. Truck is not over heating at all. He had the thermostat replaced a few weeks back and that seemed to fix it for a little bit, but now its back to luke warm air again. He has it scheduled to go back to the mechanic, but I thought I would post on here and see if anyone had this happen to them and what the fis) might be. Thanks
 
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Old Jan 20, 2011 | 07:00 PM
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Wilber15
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From: Duluth, MN
Feel the heater hoses at the heater core. Are both sides hot to the touch? If not, the core is plugged.
 
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Old Jan 21, 2011 | 10:43 AM
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If both sides are hot, there may be a blend door problem. This can often be tracked back to a vacuum line problem.
 
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Old Jan 21, 2011 | 07:37 PM
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Wilber15
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From: Duluth, MN
Not vacuum actuated. The 04' and up have electric actuators. Could be the blend door actuator. Open the glove box and look up ontop of the heater housing. You wll see an actuator almostbehind the radio. Watch as you change the heat settings, the white piece sticking out of the actuator going into the heater housing should rotate and stop when u turn the selector ****. If it doesn't, it is more then likely bad.
 
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Old Jan 23, 2011 | 07:20 AM
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shelbydodgefan
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Tsb 08-23-6<!-- google_ad_section_end --> I believe it covers both the **** style and auto/climate control style. Hope this helps
 
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