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Vacuum hose routing and connections can be complicated and less than intuitive so service manuals often contain a "wiring" diagram for those pesky hoses.
Hoses are sometimes left open to atmosphere but in that case the hose is usually quite short.
There are no diagrams that will show you the fuel lines that I am aware of. The service manual assumes that you allready know that the fuel line runs from the fuel tank to the engine. There are 2 quick connects in the short plastic hose that connects to the fuel filter/regulator assembly at the fuel pump module. One end connects to the fuel filter and the other connects to the main line that goes to the engine. It is VERY simple. There is no fuel return line from the engine back to the tank on your vehicle, so there is only one fuel line and absolutely no way to mix it up with anything else.
You may have a ruptured diafram in the fuel pressure regulator which is putting unmetered fuel in the vacuum/intake system. It is located underneath the upper plenum. If you remove the vacuum hose going to it and fuel comes out, it is defective. You can find the hose diagram for the car on the hood or radiator core support to know which hose it is.
With a good air filter, and a good fuel filter you shouldn't really have any problems since the fuel pump is good. You could have a vacuum leak, this can be identified by using a can of carb. cleaner with the tube attached so that you can spray near & around your vacuum hoses & connections. If you spray near a leaking hose, or a cap, or connection that is leaking, the engine will slow or stall. Only spray a second or two & allow the engine compartment to air out between spraying as it is a flamable product.
Short of that, you could be looking at ta idle speed control motor/throttle position sensor.
Testing the vehicle with a vacuum gauge could assist in identifying any other issues such as exhaust or valves. Gauges usually come with instructions & just need to be hooked to an available intake port.
94 ford probe does not have carb. it is fuel injection. that hose from fuel filter goes to the fuel rail on engine. if it is a vacuum hose it should go to the fuel regulator also on fuel rail.hope this helps
I have a 1994 Town Car EVTM, Electrical and Vacuum Troubleshooting Manual. I no longer need it and will sell for $10 including shipping. Let me know.
As for the hoses:
a black hose goes from the intake to a vacuum manifold with eight ports.
the next 2 ports go to the PCV through a "T"
the next port goes to the check valve for the a/c system. The check valve has two ports coming out. One for the reservoir and one to the heater control panel.
the next port goes to the automatic park brake release switch (I think on the steering cloumn base.)
the next port on the vacuum manifold has a red plastic hose going to the EVR, EGR Vacuum Regulator. A green hose comes out of the EVR and goes to the EGR Valve.
the next port has another red hose that goes to the FPRC (fuel pressure regulator on fuel rail?)
the last port goes to a check valve and then on to the brake booster.
some cars have a vacium diagram tag some where under the engine compartment but if not go to autozone.com and try to get the diagram, or try to add pictures here so i know what are you refering to
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