heater problem
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New User
Joined: Nov 2005
Posts: 16
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heater problem
here's the problem, last winter heater worked great now barely blows any warm air, made sure cables were working, fan works, heater core doesn't leak, both hoses going to and from core are warm but no warm air in cab. don;t know what else to check.
Lead Driver
Joined: Dec 2002
Posts: 5,491
Likes: 16
From: Kuna ID
If the fan is blowing air and it's not warm, you could have a plugged heater core, or possibly the valve in the heater hose that controls the temp may be malfunctioning. I have replaced the heater core twice on my mothers 95 F-150 because the engine is rusting out and plugging the core. The freeze plugs are rusting out too, but my dad just keeps putting stop leak in it. 
