Vent to defrost under acceleration
12-15-2010, 01:50 PM
#1
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Model: Cherokee
Vent to defrost under acceleration
Like the title says under acceleration my heater goes from vent mode to defrost. It seems like this would be a issue with vacume somehow but I'm just not sure what would be causing the decrease in vacume to change things. Anyone else have this problem?
12-15-2010, 04:18 PM
#2
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Year: 1995
Model: Grand Cherokee
Engine: 4.0 with all of the noise and clatter
You may have a cracked vacuum resevior, depending on what year your Jeep is, it may be behind the bumper cover on the right side, or under the battery tray.
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