When I turn in the fan, heater, or ac no air blows out! The only vent that has air coming out is the defrost vent. Wft? Anyone had this problem before?what can it be?
yup. there is a vacuum line running across the firewall. and yours has sprung a leak. it's little bitty. mine was broken in front of the passenger seat. have you been messing around the area lately? it's another common prob with our cars.
no. but it smaall. runs from the vacuum tree on the driver side across the FW the the passenger side and then inside to the vent controller. It's pretty easy to see if you just get in there and feel around. i used a piece of heatshrink tubing to make a temp splice.