Air conditioner blows hot air when outside temperature is above eighty degrees

Tiny
RAIL
  • MEMBER
  • 2003 CHRYSLER SEBRING
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 97,000 MILES
Been to two different shops. Paid to check for leaks twice. No leaks. Recharge system. Chrysler dealer changed thermostat and said air conditioner was fixed charged another $600.00. It worked on the way home but it was only about eighty degrees out. Next day it got up to ninety degrees and the system blew hot air. It seems to blow hot air when it is about about eighty plus degrees. The fan motor does not seem to blow very strong either unless it is on high.
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Thursday, August 11th, 2016 AT 9:52 AM

3 Replies

Tiny
HMAC300
  • EXPERT
Try pulling HVAC fuse inside car (fuse 11) for 60 seconds with key on then reinstall see if that does anything if it does it may be a bad actuator for blend door it may need to be scanned as well any garage can do it not auto parts. You do not need to go to dealer unless body module is bad.
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Thursday, August 11th, 2016 AT 12:20 PM
Tiny
RAIL
  • MEMBER
Thank you, tried the fuse thing, nothing seemed to change. The actuator seems to change the vents from floor to vent to defrost just fine if that is what that is about. It is seventy five degrees this morning and the conditioner works fine. Yesterday on the way back from the coast it was ninety five degrees and it would not blow cold or cool at all. The vents changed though because I turned the heater on to displace engine temp when at one point the heat gauge went up. The heater lowing hot air seemed to dissipate the hot air and cooled the engine. The actuator worked as I moved from floor to vent to defrost. The fan control did not seem to work on low or # 2 but worked on #3 setting and high. Strange. It used to work on the lower settings. Could it be something in a computer control module? Can that be tested for the conditioner portion for problems? Thanks for help.
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Friday, August 12th, 2016 AT 10:59 AM
Tiny
HMAC300
  • EXPERT
Yes the control module can be tested if this is auto temp control where you set the temperature it has to be scanned for codes becaue it can be a sensor or anything screwing this up it kind of sounds like it is auto temp. Or if it's manual temp where just cold/hot etc. Then it sounds like it's freezing up which requires Freon to be recycled evacuated for at least 30 minutes along with a drier change and Freon sweep prior to recharge. The other settings may be a bad blower resistor not being able to get all speeds.
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Friday, August 12th, 2016 AT 11:58 AM

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