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Old January 10th, 2015, 11:13 AM   #1
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Cursed w Ac problems

Ever since I've owned my first car the Ac has stopped working within 10k miles. Well apparently the accord is no different...car has 111k miles and the Ac compressor won't engage. I was at a stoplight and turned it on just to see what happened and I felt no idle drop no sound of compressor engaging. For a few months before this when I would use the Ac I would feel a "chunk" when I pressed the button. Almost like the compressor was seized and breaking loose each time I turned it on. what do u guys think is the problem? Compressor? Check somthing else first?
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Old January 10th, 2015, 11:43 AM   #2
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There's a relay on the side of the fan behind your glovebox. Mine had the same issue and replaced that part (it has a heatsink built in) and now it's working again.
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Old January 10th, 2015, 02:24 PM   #3
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It is super cold here in ne Ohio rite now. I've been told there's an interlock which won't allow the Ac to come on below a certain temp? Is this true?
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Old January 11th, 2015, 01:38 PM   #4
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If you turn on the defroster, the a/c should come on since it helps dry out air.
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Old January 11th, 2015, 03:24 PM   #5
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this is what i thought too...but then i tried the AC on my wifes i4 accord and my bros 8th gen Si...they both had no compressor clutch activation or idle drop. same as mine in this cold weather. I know both of their AC works.
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Old January 11th, 2015, 06:37 PM   #6
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either the refrigerant is low or the compressor relay is bad. im pretty sure that it doesnt matter how cold iy is outside, when you turn defrost on with the temp set low the compressor turns on
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Old January 11th, 2015, 08:04 PM   #7
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I have the troubleshooting procedure from the shop manual I'm gona follow. Before I do though is anyone in below freezing temps able to stick ur head under the hood and have a buddy operate the Ac to tell me if your compressor is kicking on?
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Old January 11th, 2015, 10:31 PM   #8
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Quote:
Originally Posted by 07J30 View Post
I have the troubleshooting procedure from the shop manual I'm gona follow. Before I do though is anyone in below freezing temps able to stick ur head under the hood and have a buddy operate the Ac to tell me if your compressor is kicking on?
1. Where exactly in the ECU is the ambient temp circuit?
2. Put your fan on high, recirculation on, both temperatures at the blue side all the way.
3. Idle car, stick head out window, click the A/C button.


You might have been hearing/feeling the front fan kick on and not the compressor. If you don't hear anything on all three cars, either you need to start walking to work and avoiding power lines, or cars A/C systems can't turn subfreezing temperatures into subzero temperatures since at that point the refridgerant would begin to hardly effect the air. They're only rated to cool to 68*.
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Old January 12th, 2015, 10:02 PM   #9
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My relay went bad. Took me 6 months to figure it out. Almost replaced the compressor...
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