ac blower through defrost vent

Asked by May 12, 2016 at 08:10 AM about the 2004 Jeep Grand Cherokee

Question type: Maintenance & Repair

i checked the vacuum line and reconnected it at the engine. ac still blowing
from defrost vent

1 Answer


Is the controls digital or manual? If manual you could have a control valve problem, it is not sending vacuum to the vacuum motors to change modes, if digital it could be a failed control module or electronic servos have quit working, the codes will have to,be pulled from the heater system.

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