Cant find vacuum line hook up.

1999 Ford Ranger Vacuum hose diagram
Pamela, Normally vacuum line routing can be found under the hood of truck, on Rad support or on the underside of hood. Check the attached links,instruction and guides, Good luck
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Ford Ranger Engine Vacuum Hose Diagrams
Vacuum Lines The Ranger Station Forums
Repair Guides Vacuum Diagrams Vacuum Diagrams AutoZone com

I had the same need on an 87 firebird what I did was go to the junk yard find the same truck with same engine and trace the lines make my own diagram, and in my case buy the hard plastic formed vacuum lines that were broken. hope that helps

That line breaks every where. Run a new line. drill a hole thru the firewall. Find the vacuum ball and hook it to it. Tape the line well thru the firewall to prevent rubbing a hole in it. Your best and fastest/cheapest choice. This line runs (in) the wiring harness....

Vacuum supply starts on the drivers side of the engine. There is a vacuum line going into the brake vacuum assist from the manifold. branching off of that line is a double line that snakes under the intake manifold, behind the valve cover, along side the valve cover on the passenger side headed to the front of the engine. Then it curves to the right side of the engine. One set of hoses from this line goes to a valve control (red and green i think). The other line goes to the vacuum storage ball, it should be black. The vacuum circuit continues out of the ball in another black line that snakes into the firewall. It goes under the heater core black box and disappears under it. Now go into the passenger compartment and drop the glovebox. look to the back right you will see a black and a white vacuum line coming out of the firewall. The black line is your vacuum supply from the engine. It goes up to a little rubber manifold. disconnect the lines coming from the dash switch and check for vacuum on the manifold where the black line is going in. The white line controls the cabin air intake under the glovebox and the thermostat shutoff under the hood. It should only have vacuum when the switch is in a certian position, AC probly. The other three lines coming off the rubber manifold snake behind the dash vent door assemble and come out near the gas peddle. The red one controls the dash vent. apply vacuum to the red hose and see if the vents go to the center dash position/AC. The yellow and blue? ones control the floor vent control near the gas peddle. yellow gives you half floor and half defrost. blue gives you all floor. you can use a small vacuum line to connect the black vacuum supply to each individual line on the manifold and check the function of each vacuum control assembly individually. I hope this helps. On my truck each control unit works fine when i apply vacuum to them individually but when I hook the dash switch up to the rubber manifold it goes to defrost. I tried changing the dash switch and the lines running from the switch to the rubber manifold and the vacuum ball under the hood, nothing works. I suspect I may have leak i just haven't found yet. next step is to get a vacuum gage and start checking the amount of vacuum i am getting at each vacuum line. I'm sure it is supposed to be getting a specific amount of vacuum and will not work if the vacuum drops below a certian level due to a leak in a line somewhere? God bless.

pull the metal retaining clip off of the fuel line. you slide it over the fuel line , slide it into the fitting. push fitting against the tool, then slide fitting off. not to bad to do.

check the hubs for vacuum leaksthe lines should follw the abs sensor wires

can you see the diagram under the hood? if not try searching a junkyard for either the diagram or a complete motor

Make sure that your truck vaccume line goes into the intake manifold where there is a vacuume spiggot at the base of the carb. You may have iadvertantly hooked it up to the wrong place.

From what I remember, the vacuum lines under there are shaped hard plastic so it should be pretty easy to figure out where they go on the vacuum ball that's hidden in the fender. You'll know you've connected them all when your heater isn't "stuck" on defrost.
Good luck!