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I have a 2002 Caravan and after charging the A/C over a couple of weeks the driver side vents started blowing hot air. The passenger side and rear A/C work. The passenger side is not completely cold but much colder than the drivers side. I have checked the mix doors and they look to be working fine. I did a little research and someone suggested that the expansion valve could cause this. Any Ideas? Thanks for any help.
 

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I've seen complaints about the blend door shaft causing uneven heating and cooling. Chrysler has a new designed shaft to fix the problem. I've also seen a TSB (24-002-02 dated 14 Jan 01)for the same. It involves replacing the expansion valve, evaporator, and drier. I have read on occassion reserviicing the system fixes the same.
 

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Thanks. I'll look into the door shaft first. I'm new to this vehicle, I know where the blend motors are, can you lead me to the one with the shaft you're referring to.
 
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