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Ted G.
Ted G., ASE Certified Technician
Category: Car
Satisfied Customers: 6152
Experience:  20 years auto repair experience, ASE Master Tech, Mechanical Failure consultant, Expert Witness
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Submitted: 9 years ago.
Category: Car
Expert:  Ted G. replied 9 years ago.
First thing to check is the charge on the AC system. If it is low the freon won't flow to the rear but can still cool the front. If the charge is good and the evaporator in back is not getting cold then it has an expansion valve issue in the back. If the rear evap is getting cold then the blend door system is at fault and the control and motor need to be diagnosed.
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