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without fail my air slowly dies after about 30 min.

it does not matter whether i choose hot or cold.
it does not matter which what vent i select.
If i put the air on full i can still hear something blowing.
I have pressed every button imaginable!
also it does not matter whether its cold or hot out.

please help thanks!

 
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sorry i forgot that it should also be noted that my cruise control also turns itself off around the same time.

 
Rep Power: 228

Check for a trouble code.

 
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ok so i turned on the car ran the diagnostic check. i heard it do some stuff then nothing blinked.

then i ran the car till the air died out and did the check again with the same result.

one thing to note is that the a/c light does not come on during the test like the instructions say.

 
Rep Power: 228

Sounds like a bad heater control panel. You also may want to check whether the rear connector is seated tightly.

 
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im pretty sure its not a connector due to the fact it always breaks down after a set amount of time.

 
Rep Power: 228

What you say does not really rule out a loose connector. It's pretty easy to just check. Otherwise, my guess is that the control panel is toast. Good luck.

 
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so how hard is it to replace a heater control panel?

 
Rep Power: 308

What model are we talking about here ??

 
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2003 civic lx. also i did notice that there are these two relays or at least i think they are relays that get really hot. like burn your hand hot.

here is a pic below they are blue and brown.

http://yfrog.com/1nimg04841j

 
Rep Power: 308

You could try gently moving the connector at the motor and at the transistor once it quits and see if it trys to work again. Would indicate a poor connection.

The relay for the blower motor is located in the under-hood fuse box.

 
Rep Power: 228