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Heater Blows Continuously

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  #1  
Old 03-10-2010, 07:31 AM
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Default Heater Blows Continuously

NEW NOTE: I replaced two vacuum hoses during the engine replacement. Could I have connected them wrong ? Could it be a vacuum issue ?

I have a 99 4WD Blazer. Replaced the engine myself last weekend and now hot air blows all the time in the vehicle, even with A/C on. Did I cross the heater core hoses or something else ? Must be related to the engine replacement, but the Blazer runs great now except for the hot air. Thanks, thanks, thanks in advance.
 

Last edited by [email protected]; 03-11-2010 at 09:22 AM.
  #2  
Old 07-15-2012, 06:14 AM
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My heater in my 96 blazer heater is giving off heat all the time also after I accidentally left interior lite on and ran battery down. Air conditioner now when turned on blows heater air also. Checked fuses, and don't know what else it could be.
 
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