1999 Jeep Grand Cherokee Q&A

1999 Jeep Grand Cherokee Question: only have air coming fro the defroster...nothing from the panel or floor

the heat blend door works. the fan speeds work. I am looking to get air once again from any vent i put the selector knob to..no dual air controls...just a three knob manual in a 1999 jeep grand cherokee. -
Answer 1
LOOK FOR A VAC LEAK FROM ENGINE TO DOOR CONTROLLER ASSM -