HVAC Air Flow Switching to Defrost When Accelerating: Dodge Ramcharger Heating & Air Conditioning

Problem overview

The AC/heater (HVAC) system may unexpectedly switch to the defrost mode when accelerating. This system is operated by engine vacuum and should be inspected for any vacuum leaks if this problem develops. There is also a revised vacuum check valve available to address this concern.

4 people reported this problem

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Dodge Ramcharger vehicles with this problem

4 model years affected

1993 Dodge Ramcharger

1992 Dodge Ramcharger

1991 Dodge Ramcharger

1990 Dodge Ramcharger

1993 Dodge Ramcharger

1992 Dodge Ramcharger

1991 Dodge Ramcharger

1990 Dodge Ramcharger

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HVAC Air Flow Switching to Defrost When Accelerating on Dodge Ramcharger

Problem overview

Dodge Ramcharger vehicles with this problem

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