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A/c is blowing hot air

 
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  #1 (permalink)  
Old 27 Jul 2013, 03:37 pm
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Default A/c is blowing hot air

I live in Florida & temp is 92 outside

My Fan works fine but a/c does not cool.

My Freon level is good, I just added new freon.

ANY CLUE ?
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Old 27 Jul 2013, 03:40 pm
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Default Re: A/c is blowing hot air

was it completely empty before you added it?

how much did you add?

does the compressor kick on?

are the aluminum lines burning hot, freezing cold, or just kinda ambient temp?
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Old 27 Jul 2013, 03:41 pm
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Default Re: A/c is blowing hot air

Quote:
Originally Posted by rob342 View Post
was it completely empty before you added it?

how much did you add?

does the compressor kick on?
How do I know if the compressor kicks in (sorry I am not novice in mechanics)

If was not empty
, I used A/c Pro for this
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Old 27 Jul 2013, 03:52 pm
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Default Re: A/c is blowing hot air

If the system is running well, the compressor should kick on about every 45 seconds, run for 10-20 seconds and shut off. When it kicks on it draws a lot of power from the engine so the computer compensates by raising the revs about 100 rpms. You should be able to tell the up and down movement of the engine revs and hear a "click" when the compressor starts.

Going out now. Sheriff's department is throwing a BBQ in this 92 degree heat in this part of Florida ....but can't pass up free food.
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Old 27 Jul 2013, 05:05 pm
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Default Re: A/c is blowing hot air

Ok Sir,
I will try it later today & post results . Mr CREWZIN , You are close to me
I am in Longwood !

Thanks
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Old 27 Jul 2013, 06:49 pm
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Default Re: A/c is blowing hot air

When that happened to my 05, I told the wife to turn the heat knob from red to blue - that worked
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Old 27 Jul 2013, 07:47 pm
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Default Re: A/c is blowing hot air

Quote:
Originally Posted by podo2000 View Post
When that happened to my 05, I told the wife to turn the heat knob from red to blue - that worked
as much as i hate to admit it, i have done it myself.
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Old 28 Jul 2013, 02:46 pm
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Default Re: A/c is blowing hot air

The knob is all the way to BLUE

Compressor does not kick in

Let me know the next course of action
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Old 28 Jul 2013, 03:10 pm
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Lightbulb Re: A/c is blowing hot air

Mopar decide to eliminate a/c relays in 2006 when they also went to CAN-BUS system....All major circuitry was subsequently wired into PCM and if anything a reflash by the dealer could be the repair.....But you could first start with disconnecting your battery for 10 minutes....This will reset your PCM if the problem lies there.....But the culprit could be some form of compressor failure with low and high compressor clutch switches.....There is also a a/c pressure cycling switch but when that fails it will usually alternate warm to cold air....Not sure but either the low or high compressor switch is easily replaced,the other requires discharging the R134a from the system.
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Old 28 Jul 2013, 03:20 pm
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Default Re: A/c is blowing hot air

Quote:
Originally Posted by randyincctx View Post
..Not sure but either the low or high compressor switch is easily replaced,the other requires discharging the R134a from the system.

High Pressure switch is on the compressor itself and requires the discharging. Low pressure switch (or Recycling) is on the Accumulator and is easy to replace but that recycles the compressor when it's running. Not the problem Sunny has.


Low pressure (recycling) switch.
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