Slow AC leak somewhere
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New User
Joined: May 2015
Posts: 12
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From: Cypress, TX
Slow AC leak somewhere
Frustrated already...my new to me excursion with a V10 started suffering a cooling loss that has slowly deteriorated over the course of about 5 days. The compressor is still cycling(not overly excessively), and at this point blowing cool but not cold. Talked to my mechanic buddy, and he said that 1 out of 5 excursions get a leak in the rear supply line. Says that the rear line has to be replaced with 3 lines instead of 1 due to the fact that its almost impossible to assemble a solid line on the truck fully assembled. Any thoughts or experience. Obviously, one can't troubleshoot a problem like this over the net. I haven't put gauges on it yet, or hit it with the sniffer...just looking for others experiences.
5th Wheeling
Joined: Feb 2012
Posts: 43
Likes: 3
From: Livermore, CA
When mine started doing this it came down to the rear TXV. Brass looking block in the rear jack compartment. I recovered the gas, changed TXV, dryer and orifice tube. All better now.
One main symptom was my AC would start cold and slowly, over a little time, get hotter. The tube going to the back system would get cold then get warmer over time. Not enough flow through the TXV.
I did orifice tube and dryer since I had the system open.
I had no gas loss from the system and put back what was recovered by an AC service machine.
One main symptom was my AC would start cold and slowly, over a little time, get hotter. The tube going to the back system would get cold then get warmer over time. Not enough flow through the TXV.
I did orifice tube and dryer since I had the system open.
I had no gas loss from the system and put back what was recovered by an AC service machine.
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New User
Joined: May 2015
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From: Cypress, TX
So I've figured out that the rear ac still blows cold while the front is not as cold as it should. Some investigation leads me to find that the vacuum operated door that controls outside air vs recirculate (max ac) is messed up. The vacuum motor works on command, but the door is broken somehow. Any idea how this door functions...it's hard to see. Anyone run into this?
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New User
Joined: May 2015
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From: Cypress, TX
Soooo...I hooked my truck up to a snap-on AC machine. Gauges showed that either I had low freon or a restriction. Turns out that I had both. The machine pulled 2.4 lbs of freon out of the truck. I pulled the orifice tube, and it was about half plugged and the copper tube in the center had been pushed down about 1mm. Replaced the schrader valves, and factory o-rings with viton. New orifice tube installed, and the machine pulled a vacuum of 30in. Held vacuum for 15 minutes and charged to the manufacturers spec of 4.25lbs of freon. Truck blows cold as ice now, and no decline after 4 days. It seems that at least my V10 likes to have a little rpm on the compressor to start cooling. Once the system has driven for about a minute, I can let it idle and it cools just fine. Anyone else have that kind of experience(with rpm's)?
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