ok i got it and it turned on and thanks for the help so far
so what do i need to do now

 

Put gauges on it and recharge it or look for the leak.
You can try replacing the switch but I think you will find out that it is OK.

 

what a good way to look for lecks that is free or close to free

 

well look for an oily substance on the lines around the valves or any connection. First have you tried jumping the low pressure switch? Have you checked the freon level via gauges like subford suggested? Also does the AC no blow through the fans at times when you have a load on the engine? If that the case check the vac line going to the blower motor for holes and or cracks


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.

 

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

 

If it worked for 2 1/2 years then I think I would just recharge it.
You may have more money to fix it next year or a different Ford truck.

 

no its been that long since it stopped working meaning it didin't work for that long

 

You need to put a little in and then use a leak detector to find it.

 

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

 

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

 

bottom line is if you really want to find the source of your issue your going to to spend a little bit of money to do so. That is even if you know someone that can do the repair work as well.

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.

 

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.

 

so you can check for leaks even with no freon left in the system after leaking for 2+ years? I would assume he would have to have something in the system for it to build up pressure to find the leaks.

 

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.

 

charge it a little, Give it a little freon pressure to work with LOL