Cannot figure out AC problem

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Old 06-15-18, 10:33 AM
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Cannot figure out AC problem

I have a 2004 Dodge Intrepid. The AC was working fine and then all of a sudden stopped one day. I recharged the AC and it worked great for about a week or so. Now it blows warm air, I put another 12oz bottle of refrigerant in it, and now some fan in the front is running constantly and the Low side port is reading 0psi. The AC diagnostic says AC 23 whatever that means. Excuse my french but can anyone shed some light on what the hell is going on? Im near tempted to sell this piece of crap car over this.
 
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Old 06-15-18, 02:44 PM
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the code could be for the blend door but your low side pressure is way to low may have a restriction or a leak you may want to see a shop for diagnosis will need a set of manifold gauges hooked up to it to get both high and low side pressures.
 
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Old 06-15-18, 04:36 PM
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What’s you high side reading?
 
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Old 06-15-18, 05:11 PM
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One more thing, what size engine does it have?
 
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Old 06-15-18, 06:02 PM
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Not sure about the high side. Im going off of the chincy gauge that comes with a refrigerant can. I gave the trigger a tap though with no can attached and theres northing coming out so im assuming there is no pressure. Its also a 3.5L V6
 
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Old 06-15-18, 07:27 PM
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The fault code is in relation to the temperature blend door actuator, you may be able to get to it by removing the glove compartment, you can try to recalibrate the actuators, just remove the M-1 circuit fuse for ten minutes to erase DTCs.
Install the M-1 fuse and start the vehicle, this will initiate the HVAC system calibration. Allow approximately five minutes for the calibration to complete.
Operate the vehicle and HVAC system to verify that Symptoms and/or DTCs are gone. If DTCs re-occur try replacing it, but it also sounds like your ac system is over charged, the fans are running high to attempt to cool the condenser, you may want to visit mechanic to set your refrigerant level to the correct level, to much refrigerant will not allow ac operation just as much as having to little refrigerant, it also sounds like your gauge is broken
 
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Old 06-26-18, 12:38 PM
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Charge

if adding freon solved things for short period, then you were low on freon, so there must be a leak.

Check all the ac fittings for signs of oil, that usually leaks out where there is a loose fitting or bad o ring in a fitting and is a telltale sign. There are some freon cans with red dye for enhanced visual detection, or uv dyes which flourese under a black light. But a good eye can usually spot the oil weeping where it shouldn't.

It could be a pinhole leak in a condensor, or worse the evaporator which is a fair amount of labor to replace. Leaking out in a week is not a catastrophic leak. Might try a can of ac freon with a sealer in it, that can solve for very small leaks.

https://www.amazon.com/Red-Angel-Sto...ords=ac+sealer

Could be the compressor, the seal inside can degrade and leak, and the unit needs to be rebuilt.
 
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