Air conditioning blowing warm air

SOURCE: the ac blows air but its not cold.

There are many common issues with the ac there is a thermostatic switch (thermistor) that goes bad it keeps the evaporator from freezing up and will interrupt compressor relay power. there is another common probwith the triple switch located on the reciever dryer. there are other problems but them are common there is also a tsb about charge capacity.

SOURCE: hi, my husband and i have a 2006 optima. te ac

yes its safe to replace replace the lines when you get the replacementlines make sure you get new O rongs but once u replace them you have to have your lines vaccumed for 10 min te see if it holds pressure if it dont then u still have a leek if it holds pressure then you can put your freon in it make shure you dont over charge because it will blow your pump

SOURCE: My a/c is not blowing cold air.

The compressor probably isn't kicking on beacuse it is low on freon. It won't take freon when you try because the compressor needs to be running to draw it in. Sounds like a catch 22 doesn't it? There is a low pressure switch either in the filter/drier, or on the low pressure line. If you unplug the switch and hook a jumper between the two pins, the compressor should kick on, allowing you to add freon. Hope this helps...

Colin Stickland

• 22516 Answers
• Posted on Jul 31, 2009

SOURCE: 2004 kia spectra no a/c

needs looking at because it could be switch that allows it to turn on if sufficient gas is present ,or a problem with the clima compùter ,but to do anything you will need the special machine to empty the system then check things out so take to an authorised AC garage ,because these systems are a potential accident and you could lose a finger with frostbite in a matter of less than 2 seconds .therefore i will not tell you how to look for a soloution because of the dangerous nature of playing with air con