A/C help
Elder User
Joined: Feb 2007
Posts: 630
Likes: 1
if its low you have a leak its that simple... the freon just doesn't just vanish into thin air. It escapes via a leak.
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Junior User
Joined: Apr 2010
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like i said the blower works perfect it just don't blow cold air and it just isn't cold and i know it has a leak but whats a way to find it cause its been 2 and a half years since it stopped working so there is no oil left anywhere is there another trick besides the uv light
Fleet Owner
Joined: Aug 2005
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From: Easton,Ks
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Junior User
Joined: Apr 2010
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i said earlier what is a free way to find it i got half a can left will that work and whats something at home i could use would soap work cause i don't really have that money to waste on buying a uv light
Posting Guru
Joined: May 2010
Posts: 1,146
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From: Central Indiana
Hmm . . .
You could use slightly diluted dish soap and a brush to swab the solution around the fittings, then along the hoses. A leak will bubble up on you. UV dye is better, though but not cheap. But then again, A/C repairs for the most part aren't cheap. That's why the one in my IHC 1010 pickup doesn't work-too costly to convert to 134a refrigerant.
A half a can of refrigerant might not be enough for your purposes, come to think of it. The system needs to be fairly full to get the pressures that would show the leak. You might still have to jump out the pressure switch to fill it, too.
Been a while since Ive done A/C work. Anybody want to chime in here?
Ray
A half a can of refrigerant might not be enough for your purposes, come to think of it. The system needs to be fairly full to get the pressures that would show the leak. You might still have to jump out the pressure switch to fill it, too.
Been a while since Ive done A/C work. Anybody want to chime in here?
Ray
Elder User
Joined: Feb 2007
Posts: 630
Likes: 1
I literally just replaced my AC system in my truck with one of those kits from NAPA(flush, oil, compressor(dry needs oil), orifice tube) and it still ended up costing me around 375(parts at garage cost) out the door to have the entire system fixed.... Now don't expect to get anywhere near that price at a garage. The markup alone on the same kit I purchased at a garage is like 480 not counting tax, labor, and freon.
Senior User
Joined: Jun 2010
Posts: 286
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From: hesperia calif.
freon leaks are fun to try to find 
most of the time the leak is at the A/C Compressor front shaft seal, behind the clutch, then check the crimps on the hoses, service port shrader valves love to leak, the crimp/metal to plastic on pressure valves love to leak too, Take a spray bottle with dish soap, and spray everything with it foam will appear at the leak point, Have fun, Chellie
PS. you will need to give the system a little pressure to find the leak, 1/2 pound of freon should do it.
most of the time the leak is at the A/C Compressor front shaft seal, behind the clutch, then check the crimps on the hoses, service port shrader valves love to leak, the crimp/metal to plastic on pressure valves love to leak too, Take a spray bottle with dish soap, and spray everything with it foam will appear at the leak point, Have fun, ChelliePS. you will need to give the system a little pressure to find the leak, 1/2 pound of freon should do it.
Elder User
Joined: Feb 2007
Posts: 630
Likes: 1
freon leaks are fun to try to find most of the time the leak is at the A/C Compressor front shaft seal, behind the clutch, then check the crimps on the hoses, service port shrader valves love to leak, the crimp/metal to plastic on pressure valves love to leak too, Take a spray bottle with dish soap, and spray everything with it foam will appear at the leak point, Have fun, Chellie
most of the time the leak is at the A/C Compressor front shaft seal, behind the clutch, then check the crimps on the hoses, service port shrader valves love to leak, the crimp/metal to plastic on pressure valves love to leak too, Take a spray bottle with dish soap, and spray everything with it foam will appear at the leak point, Have fun, Chellie
i ain't rite
Joined: Mar 2005
Posts: 65,561
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From: Marlboro Mental Hospital.
to check for leaks, the system must be charged.
a UV light will only work if there is leak detector dye in the system . UV will not work with only freon in the system.
the best way to find a leak is to use a "sniffer".
and don't be surprised after you go through all the trouble to charge the system to find a leak and don't find one in the engine bay.
a common place on ford truck A/C systems to leak is the evaporator core in the heater box.
a UV light will only work if there is leak detector dye in the system . UV will not work with only freon in the system.
the best way to find a leak is to use a "sniffer".
and don't be surprised after you go through all the trouble to charge the system to find a leak and don't find one in the engine bay.
a common place on ford truck A/C systems to leak is the evaporator core in the heater box.
Senior User
Joined: Jun 2010
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From: hesperia calif.
LOL