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Old Nov 28, 2010 | 12:14 PM
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jmattes02-7.3's Avatar
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heater problems

heater wont work replaced the heater core still didnt work cooling system if full fan blows heater core gets hot but still no warm air out of the vents cant seem to figure it out help
 
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Old Nov 28, 2010 | 12:23 PM
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The doors that control where the air goes are operated by vacuum. Open your glove box, and pry inwards on the area where the stops are. You will be able to see the vacuum lines there. It could be that you are not getting vacuum to there, or it could be the heater controls. If the core is getting hot, you are just not directing the air to the cab. You will be able to see a few of the door controls from the glove box area, you should be able to open/close them to see if that is all it is. Pull the heater controls out too and check everything there.
 
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Old Nov 28, 2010 | 12:26 PM
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i will try that and see what i can figure out thanks
 
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Old Nov 28, 2010 | 12:30 PM
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Isn't there a fuse for the heater door too?
 
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Old Nov 28, 2010 | 12:43 PM
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yea i checked that too
 
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