Question about 2002 Hyundai Santa Fe

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Air condition was only working on low with cool air. now the cool air is gone. just hot air blowing. freon was added and the compressor was checked. i have been told now that it is a fuse. what do you think?

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The "O" rings could be bad thus allowing all the new freon to leak out again. This happened to us.

Posted on Aug 01, 2009

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The air condition doesn't blow cool air when it's on. what could it be?


freon leak, check to see if compressor is kickin on, look under hood for a/c compressor. the front will move with the pulley if its working, ... if not working its low on freon or low pressure switch is bad,

Apr 02, 2011 | 1991 Lincoln Town Car

1 Answer

Air conditioning not too cold ??


Hello,
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Let me explain in layman's terms how the air conditioning (AC) system works and what could be happening to your car.

Like your body, the air conditioning compressor is the heart of the AC system, and Freon is the blood. The compressor pumps Freon throughout the AC system, either the older type R12 which costs as much as gold it seems these days, or the new environmentally-friendly R134A Freon. This Freon is a gas and liquid combination that is compressed and circulated throughout the air conditioning system. The compressed Freon is pushed through the system under pressure and is passed through different sized metal and rubber hoses and a special valve called an expansion valve that cause the gas to expand and contract.

This expansion and contraction makes the Freon gas very cold. This cold gas makes its way via metal lines into the dash area of your vehicle to the evaporator core. This evaporator core is like a small radiator, except it has cold Freon circulating inside and not hot antifreeze. A small fan (the AC blower fan which you control from the control panel on the dash) sits in front of the evaporator core and blows air across this cold evaporator and then through the vents inside your vehicle.

The other objective of the air conditioning system is to remove the heat from inside the cab of the vehicle. This heat is removed by the Freon with the help of the AC condenser located at the front of the car (usually in front of the radiator). The Freon coming back from the evaporator carries the heat from the cab to the condenser via rubber and metal hoses. Just like your radiator, the condenser is lightweight aluminum with many internal winding coils.
The Freon travels through these coils, and in between these coils are small slits or fins that the Freon is forced through. The condenser will have an electric cooling fan mounted in front or behind it to push or pull air through these fins to remove the heat from the Freon. Some vehicles still use the old fashioned fan blade driven by the engine to pull air across the radiator and the condenser.
Now I know that is just a tidbit of information on how the air conditioning system works, and it is very general, but I wanted you to know what to look for to give you insight as to what might be happening with your vehicle.
A few causes of low cooling efficiency or no cooling at all at idle are:

Lack of air flow across the condenser. Make sure the electric cooling fan motor near the condenser is coming on, or in models that are equipped with a fan blade make sure this fan is turning and is turning very fast.

Low Freon levels. Freon level and pressure should be checked by your certified air conditioning mechanic.

Overheating. If the engine is running hot or overheating, it can have a noticeable negative affect on the air conditioning system. Some cars have two electric cooling fans, one for the air conditioning condenser and the other for the radiator. Make sure they are both working properly. Usually at idle on a hot day with the AC on both fans will be on.

When the vehicle is traveling at freeway speeds, the compressor is pumping the Freon throughout the system much faster and harder than at idle. There is a dramatic increase in air flow across the condenser due to 55 mph winds, and the engine is usually operating at a cooler, more efficient temperature as well, thus allowing the air conditioning system to operate efficiently.
Note: An air conditioning system that is somewhat low on Freon can still feel comfortable at freeway speeds due to the added air flow across the condenser which can overcome the ill effects of slightly low Freon. Periodic air conditioning performance checks by your mechanic are the best way to keep the system in great shape.

Hope this helps.

Goodluck

Oct 08, 2010 | 1998 Cadillac DeVille

1 Answer

My a/c is blowing no cool air with freon added


you are supposed to hook up the guages then run the compressor, unless you have a different model than most. this method will give you the low pressure side reading as the compressor runs, this is the important one. as all systems are different there will be slightly different pressures at rest

Jul 21, 2010 | 2004 Nissan XTerra

1 Answer

A/C


Sounds like the compressor has gone out of your AC system. They are not too terrible to change, but can be time consuming depending on location. IF the freon is good, check the compressor and you should here it at idle speed w/ hood open clicking on and off as the clutch engages and disengages when the AC is operated. If there is no clicking on and off by the compressor, new compressor will be required. IF it gets cold when first adding freon, and then fades quickly, it is likely a leak in one of the high or low sides of the lines between the coil and the compressor.

Hope this helps!

Chip

May 31, 2010 | 1997 Lincoln Town Car

1 Answer

Air condition blows hot air but it has freon


You may have created an over charged condition and at this point the a/c compressor will cut off on high head pressures. This can be verified by installing gauges to the systems high and low side service taps and reading the pressures.An overcharged system will start the compressor briefly but soon cuts off once pressure goes to 350 - 400 lbs on the high side. Acceptable pressures for this system should be no greater than 250 high and low suction should drop to 40-50 psi.You might recover the charge and evacuate the system,then try bringing the charge back to proper level.A sight glass in the reciever drier really helps determining proper fill.Once all bubbles have dissipated from the sight glass during charging ,one should stop at that point to avoid overfilling.Too much freon is worse than a low charge especially in hot ambient conditions....

Aug 26, 2009 | 2003 Saturn ION

1 Answer

Air conditioning won't work on 2000 subaru outback


the most common cause of course is a low system refrigerent charge, this would be due to a leak, the most common cause of leakage is the front shaft seal of the AC compressor

Jun 30, 2009 | 2000 Subaru Outback

1 Answer

A/c


if you just added cans on freon to the system without gauges to see how much is in it,you have it over full, if the system is over full, it cant curulate .if it dont curulate it wont cool, i had one that was to full ,the hotter the outside temp got it stopped cooling, when it was 80 degrees it done fine when it hit 90 it stopped curulating,no cool.check it with gauges,check a/c fuse in compressor ,hope this is some help to you, thanks robert b.

Jun 28, 2009 | 2006 Toyota Tundra

1 Answer

Air Conditioniong not working


U may be low in Freon gas.
When Freon is low there's low pressure switch that will prevent A/C compressor clutch from engaging to protect it from failure.
So, first check Freon pressure & any leaks form lines & hoses fittings.
Even if the fan is working, that doesn’t indicate proper compressor OP'S.
Look at the compressor front side you'll see the clutch stationary while the AFT pulley moving.

Then put air-condition compressor switch to ON (Engage),
You should see the clutch engage & start rotate,
If NOT, this is very clear indication u r low in Freon.

Regards;
MAR

Jun 03, 2009 | 2003 Dodge Caravan

2 Answers

Air conditioning problem


sounds like not enough freon or orfas valve is clogged. but most likely it is low on freon

May 05, 2009 | 2000 Oldsmobile Bravada

1 Answer

2001 Honda Odyssey Ex Air Conditioning Not Cooling


Hi, my best advise is to have your air check for freon leaks ,low freon causes the compresor cluth to stop working ,this can cause the air to blow hot .......

Jul 10, 2008 | 2001 Honda Odyssey

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