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1985 Ford Club Wagon Malfunction - Fuel System
Question: I have had a sticking fuel pump relay for months, draining my battery and have controled it by first disconnecting the battery. Then burned out the pump, replaces it and found the impact disconnect at the passenger side wall and disconnected it. This morning, damn cold one, when I connected the plug to the disconnect, no pump. The relay is not working. Where is it? Mechanics tell me that Ford does not list locations and they would have to research. The wireing diagrams that I have do not even show the pump or a relay. Do you know where the realy is physcially located in my van??
Hank Fountain
Poulsbo, WA
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Technican: Which engine, is the engine fuel injected?
Owner: No fuel injection.
Thanks
Technican: I can't find a fuel pump relay listed for this application, this makes it impossible for me to assist you on this question.
I'll release the question so another tech can assist you.
Technican: The fuel pump relay should be under the hood, somewhere around the perimter of the hood. If you have a 460 the relay has 4 wires: yellow, black, red/yellow, pink/black. If you have a 302 the wire colors are: yellow, pink/black, tan/light green, red.
Hope this helps.
Owner: That helped. Susplaine something to me. When I turn off the key, the in tank fuel pump keeps on running, draining the battery, eventually burning out the pump. New pump and when I disconnect the "impact circuit breaker" - problem band-aided.
What turns off the pump. Following your wireing info, one of the wires into the circuit breaker has to be one from the relay. I follow the red - yellow directly to a fusable link to the positive terminal on the Senoloid(?). Always hot. The other lead from the cicuit breaker leads ?????
Hank
Technican: Hank,
The power supply comes to the tank this way. #1 "impact circuit breaker"
#2 Relay
#3 Pump
The relay is turned on internally by a miniture magnetic coil. This coil has power from the key and ground from the body. It seems that the likely "single fault point" would be a stuck relay.
The 4 wires at the relay are: 1-hot-from circuit breaker, 1 hot with key on, 1 direct to pump (or dual tank switch), 1 from the body (ground)
Owner: Still looking for the physical location of the relay. Under the perimeter of the hood I only find one relay type unit but not the one we want. The black/yellow comes from the circuit breaker along the upper frontedge of the fire wall left to right and disappears in to a large bundle of wire and connections. At least now the relay has gone into "stuck on" mode which I can handle by unpluging. Saturday AM went into stuck off mode and with no pump, no run. I'll get back into it next weekend.
Hank
Technican: None of my info shows the exact location for that year. I believe some were also under the dash on the right side.
Hoping you can find it soon. Here's How To Get Guaranteed Solutions In Minutes
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