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Old 02-08-2010, 01:56 PM
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Default Heater Blows Too Hot!

I have the world's best heater. It blows hot hot hot. In fact it even blows hot when the AC is on. I get no cooling at all. Is this a thermostat problem?
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Old 02-08-2010, 02:52 PM
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Are you saying that it blows full hot air regardless of what you have the temperature knob set for?

Year/make/model might help too?
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Old 02-08-2010, 03:29 PM
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Sorry for the lack of info. I am new and haven't loaded up my data yet.
I have a 97 5spd 4cly 2WD short bed that I picked up to modify and have fun with.
The heater control and fan nobs work fine at regulating flow and direction, but the hot is extremely hot. Even at low it can get too warm and I have to crack the window. When I switch to AC there is no change; it still comes out hot even thou its set on AC. Most threads are about folks not getting enough heat; I have the opposite problem.
Thanks.
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Old 02-08-2010, 03:33 PM
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probably just needs to be recharged
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Old 02-08-2010, 03:35 PM
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double post!!!!
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Old 02-08-2010, 04:07 PM
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Uh, recharging isn't gonna make the hot air go away. It might make the a/c work better, but the a/c isn't designed to overpower the heater. I'm guessing a cracked vacuum hose under the dash, not closing the blend door all the way.
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Old 02-08-2010, 04:09 PM
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Quote:
Originally Posted by Johnbaum13 View Post
Uh, recharging isn't gonna make the hot air go away. I'm guessing a cracked vacuum hose under the dash, not closing the blend door all the way.
mine was doing the same thing recharged the a/c and it works again. your looking into it to much. if it doesn't recharge then he has other problems. id rather do a job i can do by myself than wasting the money and paying someone else to do it.
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Old 02-08-2010, 04:10 PM
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will that work on a 95 as well? i need to do that
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Old 02-08-2010, 04:12 PM
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Its impossible for it to be "too hot". The engine coolant is 190 degrees (give or take 10). There is no way to make the heat get "too hot".

What you are experiencing is a blend door problem. It controls how much air passes through the heater core. The actuators have a tendency to break and result in the door being stuck in full heat.
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Old 02-08-2010, 04:16 PM
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here's a free blend door fix.
http://www.blenddoorfix.netfirms.com/
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