Ac not blowing out cool air on the drive side
SOURCE: AC Driver side blows hot, passenger side blows cold
Try an A/C recharge. What is the temps of the discharge air from the vents?
SOURCE: 2004 toyota sienna a/c not working one side cold other side warm
there are two a/c lines that run down the fire wall under the van to the rear.right around the bottom of the fire wall the is a connection point on both lines. you will find a leak there .replace the orings and recharge system. also you will need two specail toyota tools to release the couplings.i have done this repair on several sienna's. let me know if this helps.
SOURCE: Passenger ac vent cools and driver side ac vent do not
It sounds like a heater blend door issue inside the heater box that is actually not closing all the way to allow either cool or hot air or visa/versa.
SOURCE: Camry ac not cooling
you will need the AC serviced with new gas\dryer and leak test, assuming you can hear the AC compressor turning on and off.
Not sure where you are, but in australia you must be licenced to work on AC, with big fines for releasing AC gas to the atmosphere.
The warm air comes from the engine heat not the AC so the warm being normal just means the fan works
SOURCE: 2004 Toyota Sienna and the AC is blowing warm air
Well, I would check to see if the compressor under the hood is engaging and the fan turns on to the radiator when switching the a/c on.
The most common problem for a car that is 6 years old is for r134a refrigerant to leak out through o-rings.
I would get an r134a recharge kit from your local auto parts store which consists of a tube and a can of freon with oil, leak detector, and sealant to help prevent leakage.
Hope you can get 'cool' air conditioning again.
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