AC quit blowing cold

[gears]

AC has been working fine then today get in it,just blows hot air.Compressor is running,so its not leaked out the Freon.Where to start?? Oh,yeah, its a 2005 XLT

 

[Hamfisted]

Do you hear any weird clicking in the dash when you try to select a temperature? If it's not the freon charge I would say it's probably the temperature blend door or blend door actuator. Does it blow cold out of the rear A/C vents ? The rear has it's own evaporator and blend door. If so then I would definately lean toward the front blend door.



-Mike

 

[buildingdoc]

Find the large of the two lines to the compressor. See if it is cold. Should be. Also check and see if your heater valve is open by finding the 2 heater/coolant lines to the firewall and see if they are hot. If so and your heater is not on, then that may be the culprit.

also +1 on the blend door motor.

if all these are satisfied. I would take it in to get a full evac and recharge. The tech can tell you if you are good on refrigerant. if not have him add dye while charging and get a UV leak check.

Good luck.

 

[gears]

Both front and rear blow hot.I will check out the lines as you said. Thanks.. And it has been making a clicking noise in the dash for over a year now,but has always worked ok otherwise..

 

[Hamfisted]

Both front and rear blow hot.I will check out the lines as you said. Thanks.. And it has been making a clicking noise in the dash for over a year now,but has always worked ok otherwise..

If front AND back are blowing hot I would put a A/C gauge set on and see exactly what the freon charge is or if the compressor is even running. The front and back are basically two separate systems that share a common compressor and condenser. The common link between the two is the freon charge.


-Mike