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Re: my airconditioner is not cooling enough what could be...
If you have a good thermometer, place it near, preferably right in the path of a return air grille (typically located on a wall). After a few minutes, record the temperature. Then put it right in front of the grille that is blowing air into the room. Again, record the temperature. There should be between 18 and 20 degrees F between the 2 readings.
If the inside and outside fans are running and the filter is clean and the outside coil is clean and not blocked by plants or fencing, you likely have a charge problem.
But wait, is there ice on the tubing near the inside unit, or outside, on the larger of the 2 pipes? If ther is ice, shut the unit off, let it thaw and recheck your filters, your fan. If you set your thermostat to 60 and it was cool last night, you may have iced your coil.
If filters, coils and fan are ok ... less than 18 degrees between the 2 grills, you have a leak somewhere and need professional help.
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indicates that the fan is not drawing enough air through the radiator at low engine and road speeds
The fault indicated is that the condenser that is supposed to cool the hot gas as it is compressed back to a liquid is not having air passing through and that is further evidenced by the fact that the radiator is not being cooled by the engine fan or electric fans not working
I fit is a viscous fan hub--replace the hub
if electric fans , determine why the fans are not coming on
there's a pressure switch on the receiver/dryer tank on your system id bet , this is momentarily shutting off your compressor clutch as the receiver tank is being pulled m/t of refrigerant , this most times is an indicator of a small hole in system and some of your refrigerant charge has leaked out , a pressure gauge would confirm this
note: automotive ac systems possess high pressures that can seriously harm anyone that opens the "wrong" line
always obtain a good tech's help if your knowledge is not enough on this
The lite blue orange wire grounds the ac clutch relay. The engine computer is supposed to do this IF conditions are right for the ac to function. There could be a problem with one of the freon pressure sensors or the AC control module. If you are not getting a normal level of cold air from the vents, and the mechanical system is functioning correctly, the problem may be the ac control module. There may be blend doors that are not open or closed as they should be. This is normally beyond most DIY people, so info is not available in over the counter repair books. A shop that knows how to work on electronic ac systems and a shop manual may be needed.
if engine at long stand still,the engine temperature will rise about 190 degrees the cooling fan suppose to automaticaly turn on when coolant temperature sensor get hot it cause its resistance decrease causing pcm to send power to coolant fan relays and cooling fans, when you turn on AC the cooling fans suppose to turn on to cool down AC CONDENSOR, IF NOT AC WONT WORK COOLING FAN COOLS DOWN REFRIGERANT SO IT CAN RECYCLE THROUGH THE SYSTEM AGAIN.your cooling is suppose to turn on when engine at a sit still if vechicle not moving as coolant temperature rises at a set point the cooling fans will turn on cool down engine.cooling fans dont turn on when you first cold stsrt vechicle unless you have AC SWITCH ON.if cooling fans dont turn on when vechicle at a long stand still or moving along slow traffic.if coolant temperature sensor been replaced and fuses and relays okay have dealership check see if pcm driver circuit working faulty pcm will cause cooling fans not to turn on.
is the ac a manual one or automatic? if it's manual then it froze and will no longer work. it froze and is all done working. time for a new one. I bought one 12 years ago and apparently I was suppose to turn on and off. The ac couldn't do that. IF it works on it's own maybe the circuit isn't the higher amp for 220 ac units.
Good thing you didn't add over. My friend is a mechanic and he says that the ac chargers you can get at any auto store are just going to mess up your car. (cause most people over fill them) he says go to a shop and let them get a recharge in it and to fix the leak if there is one.. It wouldn't cost you more than 100 dollars. And that is the best solution and safest.
that seems to be the problem. If the fan does not turn on when the a/c is turned on it could be a fuse, relay, control box, or just a bad fan. Try connecting the fan directly to see if it works. Does this car have 2 fans? normally all the small cars have 2 fans one for the engine cooling and one to assist the first when the a/c is turned on. Without the fan pulling air through the a/c condensor the had pressure goes up high enough to shut off the a/c compressor. It also causes some cars to run warmer than usual when stopped. Check the a/c condensor for blockage also which doesn't have anything to do with your fan not working.
My AC went out suddenly and it turns out I got a major leak in one of the tubes in the AC system and thus warm air. When I bought the first can of refrigerant it didn't take much to get the pressure back where it should be. After some good advise I learned that my compressor was kicking on and off (you'll hear it cycle on and of every few seconds or so) and not STAYING on. Turns out because the system was drained of coolant I had to fill the tank a little at a time and actually go over the recommended pressure to force the air out of the line and get enough coolant in the system to kick the compressor on. Turns out it was all for not...given the hole in my system it just leaked right out. I live in GA and still don't have it fixed; I was quoted $800 to fix it and figured I could live with it.