2003 Grand Cherokee A/C vent problem
I joined this community to get access to the sketches and pics I found that could help me figure out how to get the AC air to come through the dash vents again. Started coming through the defrost only. I have the manual system.
Re: 2003 Grand Cherokee A/C vent problem
Welcome to the garage.
The manual system uses a vacuum operated mode door actuator. This actuator is failsafe (so without vacuum) in the defrost position. Vacuum is taken from the engine intake.
There is probably a loose or worn through vacuum line under the hood
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