1999 Ford Ranger SuperCab "heat vacuum lines" Questions

...and heat vents. Found that vacuum line under hood was not connected to the intake hose near the mass air flow sensor. Also a line that "T"ed off the line mentioned above was broken. A very simple

...heat and A/C controls. Find the vacuum can. It may be under the hood on one of the inner fenders. The "one-way" check valve is usually located in the line and close to the can, make sure it works ...

...heat shield from oil pan and then carefully slide it forward to expose vacuum diaphram. There's your vacuum hose! You can find this and much, much more info in the Haynes Ford Ranger 1993 thru 1997 ...

...vacuum operated valves to open and close the ducts in the heat- a/c box on most models... look under the dash on the right side (passenger) on the top of the heater/ blower case..there is a plastic ...

...heat blows only threw the defroster. Item Part Number Description 1 18A318 Vacuum Control Motor-, Panel/Defrost Door 2 18A478 Panel/Defrost Door (Full Vacuum Position) 3 - Defrost Air Flow 4 - Side ...

vacuum lines starting at the firewall in front of the passenger side. With the heater or AC on HIGH and directed at the front vents, listen for a leak or trace the vacuum line back ward to try to find

...vacuum line) that is under the hood and runs thru the firewall at the heat core area. If it only does it when you set the ac then it will be one of the blend doors under the dash leaking most

...vacuum lines and did find a couple of leaks but didnt cu seems like when you turn off heat a/c etc like a squesking where the actuator is located on left side of radio facing it. Sounds like one of ...

...heat comes out of your defrost than the problem is more than likely your switch or a vacuum hose to the switch. Car's default to defrost when there is a problem. I can't recall off the top of my head ...

heat only blows out the defrost even if the switch is on the floor or the middle vents? 1997 Ford Ranger 4 cyclinder. The system defaults to defrost when it has no vacuum supply from the engine. check