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  #1  
Old 07-20-2018, 10:00 AM
Uno Strzelichowski's Avatar
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Default A/C

Hi I am having AC problems with my 01 Jaguar s type 3.0. Few days ago I went under the wheel well and found the low pressure port and recharged it as indicated on the bottle. After using the whole bottle, I saw the clutch engage and AC did become available. But after 30 seconds of cold air, the AC started blowing hot air again and the clutch disengaged as well. I’m suspecting a leak in the system but I have no idea where and it would be too costly to take it to a professional so I’m out of options. I’m stumped and I don’t know what to do
 
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Old 07-20-2018, 10:46 AM
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It has to be a hefty leak, you can get refrigerant with UV dye in it then use a black light to find the leak.
 
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Old 07-20-2018, 11:06 AM
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Originally Posted by Norri
It has to be a hefty leak, you can get refrigerant with UV dye in it then use a black light to find the leak.
Yes, that must be quite some leak. I've got an electronic sniffer like this and it works fantastic, for only $20:

R134a Leak Detector at Amazon R134a Leak Detector at Amazon


If your system has gone completely empty, you may need to sacrifice part of a can into the system so the leak detector can find it. Don't forget to check at the vents inside the dash, too, in case the evaporator is the source of the leak. To detect such a leak, it's best to let the car sit for several hours with the engine off. Once the fan turns on, it blows out any leakage, so test before starting the engine.
 
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Old 07-20-2018, 01:18 PM
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If it leaks that fast you could put another can in slowly and with a helper one would listen for the leak. If you here nothing then at least you can operate the system and use the sniffer like Karl says
 
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Old 07-23-2018, 01:52 PM
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I just put in refrigerant and one of the hose poured out fumes. The clutch isn’t spinning either; here’s a picture
 
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Old 07-23-2018, 01:57 PM
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Default Clutch

one more thing; is the clutch supposed to engage without the refrigerant in the system? And if so why wouldn’t it engage?
 
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Old 07-23-2018, 02:17 PM
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No, the clutch won't engage until the pressure switch is satisfied.
 
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Old 07-25-2018, 09:11 AM
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Thank you for all the replies I’ve finally resolved the issue. Turns out the rust on the bracket made a hole on one of the steel AC lines. I just patched it up and it blows cold as ice. Thank you.
 
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