Dodge Spirit R/T Problem Report

Dodge Spirit R/T HVAC Air Flow Switching to Defrost When Accelerating

(2 reports)

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.

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