Question about 1999 Plymouth Breeze

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99 Plymouth Breeze air conditioning not blowing cold air

The AC in my 99 Plymouth Breeze will not blow cold air. I have a pressure guage that shows high pressure when the AC is off. The pressure drops right away to within the correct operating pressure when the AC is turned on. My brother says this means the compressor is working properly, and that the system is charged properly. He thinks it may be a duct gate not opening. Any ideas where to start?

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  • cebigler Jul 09, 2010

    The lower side hose is not cold, the upper hose is very hot. Any ideas on that? From what I can tell, there are no vacuum tubes going into the passenger compartment. I'm not afraid of tearing into it, but I would like to have abetter idea of what to look for...

  • cebigler Jul 09, 2010

    please read through the previous threads, the compressor is working and has the proper charge, but there is no cold air...

  • cebigler Jul 12, 2010

    I think you're right; I haven't tried finding leaks, but I did add freon until the pressure was right at the start of the high pressure indicator on the gauge. The AC now puts out cool air, but not really cold. I have driven the car quite a bit since then and haven't gotten a chance to check the freon pressure agsain to see if more can be added. The car had sat for over a year before I bought it a couple of months ago; I'm thinking it probably does have a slow leak somewhere and may just need to be recharged. Thanks!

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  • Master
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Hello my name is Israel and I will try to help. Using the I would ask you to try something really quick. Open up the low side valve and see if freon start to come out. It should come out in the form of a white cloud. If it doesn't, then the problem is that you have a leak and will need to find it. The compressor will still give you a pressure reading but it may not have any freon. Check all your connections and especially the stems in the valves. Also be sure you check your condenser. You can buy a leak finder to help you. This will save you time and money. Good Luck.

Posted on Jul 09, 2010

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  • Master
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When you turn on the AC, check to see if the compressor is running. If the compressor clutch is not engaging, it might be as simple as low refrigerant level.  Since the compressor cannot be sealed, the seal always leaks a little and you need to occasionally add a little refrigerant. This can be one reason.Check the compressor with meter too.
When the your car a/c is not blowing cold air this only indicates that the air conditioning either has electrical problem or has major leak on the system. If the a/c system has electrical problem it suddenly stop blowing cold air, instead the car air conditioning system blows hot air. Usually an electrical problem is triggered by a short circuit on the system either the wire or the a/c switch that causes the circuit breaker to become busted. In that case there is a sudden stoppage of cold air that comes out the a/c vents .

Likewise when there is a major leak of refrigerant on the system, there is a sudden stop of blowing of cold air on you're a/c vents. Refrigerant is the one responsible in carrying the heat from your car compartment into the outside so that the compartment will becomes cooler. For some reasons if the air conditioning hoses or seals are ruptured or damage, the refrigerant will rapidly escape the system thus resulting to sudden reduction of cold air that comes out the a/c vents.
There are other possibilities that causes this kind of problem, however this possibilities is not commonly encountered, which is a compressor related problem. Usually the compressor belt is slipping or damaged. Also it might be possible that the compressor clutch is not engaging.
Check out this possibilities to rectify the exact faulty.
Thanks. Keep updated for any more query. You can rate this solution and show your appreciation.

Posted on Jul 09, 2010

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  • Plymouth Master
  • 6,826 Answers

Sounds like your brother is right. If the compressor engages while the car is running, the pressure should go from high down to a normal of 25psi to 45 psi on the low side. And, the low side pipes should be cold, about 35 to 45 deg. F, and you might see condensation on the pipes that are bigger in diameter on the low side, than on the high pressure side.

If your fan is blowing at all, and it's warm air, then the gate that controls whether you get hot air from the heater core, or cold air from the evaporator is not functioning correctly.

Usually, a vacuum motor controls this flapper inside the dash. Getting to it can be tough though.

A vacuum tube could be disconnected, or the vacuum motor somehow stuck inside.

That's the theory.

Now, I would take it to an a/c technician who knows how to take the dash apart to get at the flapper door inside the dash.

This is not a novice project.

Good luck to you fixing this problem.

Posted on Jul 08, 2010

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