5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

my heater wont stay off

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Old 06-25-2006, 12:08 AM
  #1  
lookinforastang
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Default my heater wont stay off

even in the off position heat comes out of the defroster vents

i thought my tranny was overheating but its the stupid heat stayiing on all the time.

whats up with this? it dosnt do it all the time usually only when the car gets warm.
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Old 06-25-2006, 12:37 AM
  #2  
darkpony50
 
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Default RE: my heater wont stay off

MY 85 Mustang does this too. my comes out of the front vents and the defrost. I think it has to do with some vacumm lines under the dash by the glove department or behind the controls. I just made sure it was off and moved the temp. control to cold and it stop coming out of vents.

[IMG]local://upfiles/40964/005B185B2BF842DD8124312723B6D1A0.jpg[/IMG]
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Old 06-25-2006, 02:05 AM
  #3  
Tims 88GT
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Default RE: my heater wont stay off

yea ur vaccum lines in the dash are broken or not hooked up right
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