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Old 10-04-2014, 03:57 PM   #1
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Cool 1991 Fleetwood 460 Ford fuel pump/starting problems

We have a 1991 Fleetwood Southwind with the 460 Ford fuel injected motor. This spring it started fine but has been sitting. Now when I try to start it there is no fuel pumped. I changed the fuel filter and no change. The fuel pump and ECC relay pick up properly but no fuel pump action. With the key turned on and the line pulled off the fuel filter, no fuel is pumped to the filter. The fuel pump was replaced and has about 700 miles on it.

There is no 12 volt feed to the fuel pump relay socket. Can anyone tell me where that power comes from??? I've been told from a fused source and the literature that came with the coach says it's a fused link from the starter relay.

Where would the fused links be since I can find no fuses either in the outside compartment or under the dash that are labeled for the fuel pump.

Thanks for any help you can provide.
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Old 10-04-2014, 04:02 PM   #2
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Not sure if it applies to your model but many fords have an inertia switch that cuts the fuel pump in the event of a wreck. Perhaps it popped or malfunctioned.


Joe 1998 Itasca Sunflyer Ford 460
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Old 10-04-2014, 04:14 PM   #3
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Thanks, I've checked that and it's not tripped. I've lost the voltage to the relay sockets that should be hot all of the time. Just don't know what the source of that voltage is.
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Old 10-04-2014, 08:06 PM   #4
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If you do not have power to the common contact of the fuel pump relay then you would have an open fuse link by the starter relay.


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Old 10-04-2014, 08:36 PM   #5
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Thanks for the info Bill. I'll take a look at that in the morning.
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Old 10-05-2014, 09:24 AM   #6
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OK here is a wiring diagram that I made up.
The wire coming from the fuse-link "W" to the common contact is Yellow.


Note that the Fuel pump relay has a green bottom and the power relay has a brown bottom.



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Old 10-05-2014, 09:36 AM   #7
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To test the fuel pump circuits with a loading test light ground pin #6 of the self-test plug and turn on the key.




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Old 10-05-2014, 11:45 AM   #8
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I don't have voltage present on pin 3 of either relay and it's my understanding that it should have voltage present all of the time. I can see the starter relay up underneath the voltage regulator but how do you get up/in there to check the wiring and, if needed, replace the links???
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