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A/C Acting Up - Either COLD or HOT - nothing in between

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Old Oct 13, 2007 | 11:32 PM
  #1  
kevincao01's Avatar
kevincao01
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Default A/C Acting Up - Either COLD or HOT - nothing in between

How's it going guys, I've searched and couldn't really find the exact problem I'm having. Here is the situation.

My a/c either blows COLD or HOT.

On the "MAX COLD" setting, it is cold, no problems there. But when I turn the temperature **** even 1 notch to the right, the heater kicks on and blows heat.

I went to a Lambs Automotive (an Central Texas-based auto repair chain) and they told me it would cost $600 to replace ($400 for part, $200 for labor). He told me the Temperature Control Module (the unit that connects the volume and temperature *****) went bad. Before spending that kind of money, I wanted to see if I could do it myself. It was a pretty simple install and cheap part (thanks to Aliga), but the same thing happens. So I can only assume Lambs misdiagnosed.

If anyone has had this problem before, what was the outcome? Any advice would help. Thanks in advance.

Last edited by kevincao01; Oct 14, 2007 at 01:24 AM.
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Old Oct 14, 2007 | 12:54 AM
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try replacing the thermostat...i had the same problem...well i didn't thought it was a problem just thought i had cold a/c hah...the new thermostat fixed that right up
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Old Oct 14, 2007 | 09:08 AM
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That sounds like something that could be causing the problem. How much did it cost you? Did you get it from the dealer?
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Old Oct 14, 2007 | 05:47 PM
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i have that exact problem too!

if i want it HOT.. turn it one click to the heat... or keep it on HOT.. the only place i can have it cool/COLD is on COLD>. :[ nothing in between!

booo

the thermostat is on that engine area right? i think i already replaced that >.>
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Old Oct 14, 2007 | 11:14 PM
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yeah i got the part at the dealer but i forgot how much it cost...don't think i was much or else i would have remember...

yeah the themostat is in located in the bottom of the engine...follow the lower radiator hose and where it ends at the motor is where it is located...i think if remember correctly
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Old Oct 15, 2007 | 02:24 PM
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most likely your heater valve is bad. i have the same problem. right when the heater valve went bad it acted up the same way.
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