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HOT AND BOTHERED!!!!!

 
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  #1 (permalink)  
Old 22 Jul 2011, 07:24 pm
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Default HOT AND BOTHERED!!!!!

I have a 2004 pt cruiser. The a/c wasnt working up to par so I added 1/2 a can of freon. Now it doesnt work at all. The compressor still works, jumped the switch on the reciever drier. The problem is the valve on the bottom side of the compressor, its leaking dye. What causes this part to fail?
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Old 22 Jul 2011, 07:39 pm
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Default Re: HOT AND BOTHERED!!!!!

Quote:
Originally Posted by wonrotg65 View Post
What causes this part to fail?

You sure you want to hear this? two reasons why that switch would fail. Overheating compressor maybe because the fan isn't working OR ...and this you won't like, you pressurized the system. That switch is the High Pressure switch. Too much pressure and it should open a valve on the compressor and shoot Freon into the atmosphere. Too much pressure too fast from your can, can blow the valve. Did you use gauges for the hi and lo pressure so you know how much pressure was enough?

Other than that, the 3rd reason: it's a switch, sometimes they just go bad. The LPS (low pressure switch) goes bad all the time.

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Old 22 Jul 2011, 07:49 pm
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Default Re: HOT AND BOTHERED!!!!!

Actually where you have the arrow pointing is not where I was talking about. If you look straight down from the arrow there is a nut, at least it looks like a nut. Just to the left of the hose. I think that it is a 14 or 15mm nut. That is the pressure valve I was talking about. It has very small holes in it. this is where it is leaking from.

Last edited by wonrotg65; 22 Jul 2011 at 08:02 pm.
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Old 22 Jul 2011, 07:52 pm
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Default Re: HOT AND BOTHERED!!!!!

can that valve be replaced?
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Old 22 Jul 2011, 07:54 pm
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Default Re: HOT AND BOTHERED!!!!!

For what it is worth. The can of freon I bought had a gauge in the kit. never went over the recommended psi.
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Old 22 Jul 2011, 07:55 pm
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Default Re: HOT AND BOTHERED!!!!!

That's the pressure relief valve that jets the freon into the atmosphere when the high pressure switch sees the compressor is overheated or builds up to much pressure. Don't think that can be fixed, but never ran into that problem. I doubt if they would sell that separately, but you can try looking for it somewhere.
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Old 22 Jul 2011, 08:23 pm
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Default Re: HOT AND BOTHERED!!!!!

Thank You Very Much
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Old 22 Jul 2011, 08:27 pm
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Default Re: HOT AND BOTHERED!!!!!

Your welcome.
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Old 23 Jul 2011, 07:03 am
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Default Re: HOT AND BOTHERED!!!!!

wonrotg65,

If your still around. I found out something last night while trying to help someone else. What I read and personally knew about the LPS wasn't wrong, but apparently wasn't the whole story. It seems there can be an open condition on that switch that will cause the system to blow warm air so besides freezing up the system and stopping the compressor from cycling, it can cause warm air to blow into the cabin if the switch fails in an open condition.

On that occasion, the computer set a fault code: P1274 A/C Control Open.

So, what I'm saying, if you find out your system has the right amount of Freon and is still blowing warm, then go ahead and replace the LPS. As I said before, it's cheap and easy to do.
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