AC Problem 2005 F250
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AC Problem 2005 F250
I just bought this truck a couple of months ago. My AC was working fine. Then the hotter its gotten this year to less it cooled. Now it just blow warm air most of the time. Every now and then it will start cooling but then quits. We had some rain blow in the other day and the temps dropped and it worked then too.
The clutch cycles on and off. The low side was reading too high In the yellow on the DIY type gauge. So to be safe I evacuated a little, it's now at 35PSI but not blowing very cool. The clutch is cycling but not very rapid.
So Im looking for this orifice tube thing. There is a line running from the canister looking thing. It appears to have a joint of some sort that looks like a donut. Around that donut is what looks to be a plastic retainer type thing.
Is the where the orifice tube is?
I do notice that when the compressor cycles "ON" the tube gets cold on one side of the joint. Closest to the firewall. and the other side of this donut thing towards the front doesn't change. I got a clog don't I? ( i know i must be a genius)
Its Africa hot too. 5:50pm and its still 95d and today is a good day.
The clutch cycles on and off. The low side was reading too high In the yellow on the DIY type gauge. So to be safe I evacuated a little, it's now at 35PSI but not blowing very cool. The clutch is cycling but not very rapid.
So Im looking for this orifice tube thing. There is a line running from the canister looking thing. It appears to have a joint of some sort that looks like a donut. Around that donut is what looks to be a plastic retainer type thing.
Is the where the orifice tube is?
I do notice that when the compressor cycles "ON" the tube gets cold on one side of the joint. Closest to the firewall. and the other side of this donut thing towards the front doesn't change. I got a clog don't I? ( i know i must be a genius)
Its Africa hot too. 5:50pm and its still 95d and today is a good day.
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Joined: Jul 2010
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From: Fort Worth
If it is the Orifice tube, the A/C will work intermittently. When the tube's screen clogs, you will not get cool air as the high pressure switch will cycle the compressor off. If the truck has had an A/C compressor go out in the past, you may have the Ford "black death" present in the system. It is basically a black, metallic sludge that clogs the orifice tube and the condenser. Worst case you will need to replace the condenser, lines from condenser, and the orifice tube. That would solve it if it was that. Sometimes just replacing the condenser and orifice tube and removing the lines and cleaning them out really well will work too.
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well I've managed to confuse the issue even further.
I completely evacuated the system, I thought by emptying it on the low side until all the pressure was gone.
But when I separated the evaporator line, it came apart with a bang. Quite a bit of pressure.
At this point I looked and there was no orifice tube in there at al. I know, I know. Trust me it wasn't there. So one of two things. I blew out when I separated the line and now I cant find it or it wasn't there to begin with.
Im thinking the latter because I cannot find it. So I put the new one in and recharged. So far every thing is working fine.
I still dont understand though. The evaporator line. It's crimped a little where the orifice tube seats. Then the quick release. then it moves on.
At that point either with a new orifice tube or assuming without any orifice tube, it cold on one side of the quick release and hot on the other.
Same as before but before I assumed I had a clog.
WTF?
I completely evacuated the system, I thought by emptying it on the low side until all the pressure was gone.
But when I separated the evaporator line, it came apart with a bang. Quite a bit of pressure.
At this point I looked and there was no orifice tube in there at al. I know, I know. Trust me it wasn't there. So one of two things. I blew out when I separated the line and now I cant find it or it wasn't there to begin with.
Im thinking the latter because I cannot find it. So I put the new one in and recharged. So far every thing is working fine.
I still dont understand though. The evaporator line. It's crimped a little where the orifice tube seats. Then the quick release. then it moves on.
At that point either with a new orifice tube or assuming without any orifice tube, it cold on one side of the quick release and hot on the other.
Same as before but before I assumed I had a clog.
WTF?
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