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Old 07-20-2013, 06:42 PM
meltonk1 meltonk1 is offline
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Join Date: Jul 2013
Location: Celina, TX
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Vehicle: 2004 Dodge Ram 2500 Diesel
Engine: 2004-2004 359ci (5.9L) Cummins ISB 600 24-Valve Diesel I6 325hp 600lb/ft
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Thumbs down AC won't cool

Trouble with the ac, not very cold at idle, ok at speed.
New compressor and dryer last year. That is all I am sure of.
Just replaced the recirc door and it is working correctly.

Put on the gauges, suction 30#, Disc 450# and then cutting out on the switch I suppose. It would cycle like this at idle. At speed it would not cycle.

Thought it might be the orifice tube plugged up. Took that darn thing out, lot of work, and found a couple of metal chips in it. I don't know if it was changed out last year, so, chips are from??

Put on a new orifice tube assembly and pulled a vacuum. Shut down the pump and sat for an hour with no change in vacuum.

Charged the system. Compressor will run at almost 0 psi?? Added gas and brought the suction to 30#, disc at 375#, no cooling. I could see the inlet to the evap getting iced up at 10lbs, then it would warm up and the dryer would never cool off. Air certainly never cooled down.

Who has an idea?
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