Why doesn't my ac work anymore
The ac comes on, the indicator lights come on, the fans can be heard but the air doesn’t get cool. It keeps blowing warm air
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The most common causes of broken air conditioning are leaks or compressor issues. If your air is blowing cool but not cold, the problem could be a clogged filter, cooling fan problem or radiator trouble.
Cool But Not Cold
If the air conditioning is set to max cool and fans on high, but is only blowing moderately cool air:
- Check to see that the cooling fans on the condenser or radiator are running when the air conditioning is on.
- Look for any restrictions like leaves, bugs or dirt that would keep air from passing over the condenser.
- Check the cabin air filter to ensure that it is not clogged.
Check the pressures in the system using a manifold gauge set. The recommended high-side and low-side pressures can be found in the repair manual.
Compressor
When diagnosing an air conditioning issue, it's easiest to begin at the compressor.
- With the engine running turn the A/C on max cool, set fans high, and make sure that the clutch is engaging on the compressor.
- Note: this is not the pulley, but the center piece that engages the pulley to the compressor shaft. If the clutch is engaging and disengaging rapidly, the refrigerant may be low.
- If the clutch is not engaging, use a voltmeter to check for voltage getting to the compressor.
- If there is voltage - the clutch may be bad.
If there is no voltage - a cycling switch may be bad, a fuse may be blown and the system may not have enough refrigerant pressure to trip the low pressure cutoff switch that cycles the compressor.
Leaks
Leaks are the most common problem associated with the air conditioning system.
If pressure is low, then there may be a leak.
- Using a UV A/C leak detection kit is the easiest way to find a leak.
- Follow the instructions on the packaging to introduce UV dye to the system and UV light to find the leak.
- Check around all fittings to verify that they are all secure.
- Check hose manifolds on the compressor.
- Check the front seal and the o-rings sealing the pressure switches on the back of some compressors.
- Check where the hoses are crimped onto the fittings.
- Check the Schrader Valves.
- Check for pin holes in the condenser.
- Check where the evaporator drains condensation with UV light. Sometimes oil or dye can be seen.
Note: The dye check will not work if the system is too low and the compressor is not cycling.
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the above answers are not suitable for camry 2009, as no clutch in it
there is few switches and sensors can prevent compressor from engaging
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5 commentaires
Thanks everyone here. My Camry 2011 AC only cool at passenger vent but blowing only fan at driver vent why?
par olabisi ojo
hi everyone, I have camry 2010, it ac was cool initially , but of recent blowing air, also its only work for a brief time or not start up at all. Also I observed it will be cold during cold weather especially when its raining. Please advise
par Temitayo Odunsi E
For 2 weeks my ac in my 2011 Camry has been blowing out hot air .. today I get in it and it’s ice cold .. this has been going on for about 2 months sometimes it works sometimes it don’t .. any idea what the problem is ??
par Danny Baker
Mine is doing the same thing and I can’t figure it out! I have had it recharged and checked for leaks several times.
par Kaylee Gill
there is a control valve that fails on the compressor, and it's serviceable. This will cause intermittent cooling.
par Alan J Moore