HVAC Air Flow Switching to Defrost When Accelerating on Dodge Shadow

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.

RepairPal Verified
Average mileage: (–)
5 model years affected: 1990, 1991, 1992, 1993, more1994
5 people reported this problem
0 people shared problem details
Related Items:
how to set timing when installing new timing belt? which cilynder is number one?
I need directions on how to replace a brake light switch on a 1991 Dodge Shadow America. I can...
yeaterday i accidently locked my keys in my 94 dodge shadow with the engine running in park. wh...
4 Cylinder engines may exhibit an erratic idle with the Check Engine Light illuminated. These c...

Related Content