ac heat he]p
my 1999 grand Cherokee is having ac and heat problems. Some times with the ac set on low cool, heat will come out on driver and passenger side.At other times the heat will come out on driver or passenger side and ac will come out of the other side.I just had the blend doors and motors replaced and now I don,t know what to check next
the dealer can scan the a/c control head and watch what the doors are doing. If you reach in and touch the blend door motor, on the ft. of the case. You canfeel the small round part in center of motor. turn temp to cold them warm. see if door moves then stops. If it stps each time door is ok. Is the temp sensor in ac control head covered? this will make them go nuts. It read your body temp and adjusts doors as needed. the sensor is located between the dual temp. knobs in center of dash. They say there can be no damage to this area. smudges , scuffing or being covered. hope this helps.
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