Air conditioner not working

I am sure you are right. I have experience on the electrical side of things, and I was really hoping it would turn out to be a problem with the control interface or a relay somewhere. If it were that, I think I could fix it, but it looks now like it is likely with the A/C system itself.

I am severely underemployed at the moment, so I am not sure that seeing a pro on this will be an option. I may have to wait until spring.

At the moment, if I cannot fix it, it is not getting fixed.

Sorry, that is just the long and short of the economic situation I find myself in.

The problem is that the compressor relay is not getting any power on the common pin. When I turn on the air conditioning, the relay coil is energized and the relay closes (as it should). The no pin connects to the common pin.

The common pin (point 64 in the second diagram) is out. I assume it should be at +12, but it is not.

The obvious problem would be that the fuse labeled 12 is blown. However, as far as I can tell, all the fuses in the PDC are good, unless there is a fuse hidden somewhere.

Well darn! I would have not thought to look at that fuse because it is labeled as being for the radiator fan, I guess it is for both. On closes inspection, the fuse is fine, but when I removed it, the contact points had some corrosion on them.

A quick brush-up with some contact cleaner and reseat the fuse and the air conditioning now kicks on and I can ride cool.

Thanks a million! I thought it was an electrical problem. I did not expect it to be such a simple one.

High pressure keeps climbing low side
clutch wont engage
jumped term 30+87 on a/c relay
clutch engaged blowing cold air
high side gauge starts to climb
and fluctuate
low side starts climbing also
last compressor did same
till it safety high pressure blow
put on another after evacuating
vaccumed 3/4 hr
same problems

Hi roy
it was a used a/c comp I installed
and I did not change dryer
and valve
the fans did come on when
i bypassed a/c relay
i, ll change those 2 parts with
new ones
and get back too you
thx roy

The drivers side gets water under the mats in the front and back. We thought it might be from the rain or washing the car. Have tried running water on the car to check for leaks from windows and sun roof but nothing. What seems to happen is when you run the air for awhile it starts to get damp under the mats and if not paying attention to it you can get a puddle, which has happened. Does anyone have a idea what might be plugged up, where to look or what else we might try? All information would be appreciated.

My a/c works fine and blows nice cold air - MOST of the time. But suddenly it will begin blowing warm air. It will do that for awhile then go back to cold air. Freon is fine. Any ideas?

Heater does not blow hot air

Yes, the vehicle reaches normal operating temp. But it blows out luke warm air.