Chances are you are low on refrigerant, my suggestion is take it to a shop for proper diagnostic but you could buy an off the shelf refrigerant (many brands available depending where you are, walmart will have something, will be a little white can with a hose and instructions.) and top it off your self to get the coldness back. If that doesnt fix it and you do go to a shop make sure to tell them what kind of product you used/ keep the can and show them.
SOURCE: overheating in 2002 sedona
I would also check your oil for the infamous white milky substance. Which usually means you have a blown head gasket. You will need to get this repaired or just limp the vehicle along Replace the thermostat and check for any cracked hoses etc. If you still have issues let me know. Air bubbles in your coolant system can also cause this. Keep adding coolant untill it stops taking at and is at the fill line on your reservoir.
SOURCE: AC does not blow cool or cold air.
There is a possibility that the Freon in the AC system is too low. Normally, the AC system has a pressure switch to keep the AC from running if the runs out or is too low. This helps prevent damage to the AC system.
SOURCE: front ac is blowing cold
More than likely this is the rear orifice tube(or rear metering block) same concept.This invloves evacuating the ac and removing the orifice tube and repl;acing it.This is just normal maint that is accustomed to this vehicle.Please get back to me with any more questions...thanks!!!
SOURCE: AC blowing warm
Is it that hot in Sedona. I live in Tucson and thats hot. Have your freon recharged. You can buy the refrigerant at Checker or AutoZone. How do you like our Governor. She really made the national news.
SOURCE: 2003 kia sorento heater blows warm air only while driving at high speed
Engines can rock on the motor mounts. You probably have a vacuum line that is pinched, cracked, broken,kinked, or unhooked. check the engine compartment lines first. If you have thin plastic vacuum lines, they can kink more easily than rubber lines. If you have been working under the dash (replacing a radio, etc) check your work area in case you have a broken fitting on a vacuum housing or an unhooked line.
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