Help Please - Fuel Pump Circuit Interrupted
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Tuned
Joined: Jun 2006
Posts: 363
Likes: 3
From: Graham WA
Help Please - Fuel Pump Circuit Interrupted
1986 F250 Reg Cab 4X4 (460 engine)
I'm currently going through my truck to refesh seals and such. I've had the engine and transmission out of the vehicle.
While doing this work I cut the wires to a trailer brake control and removed it (it was vibrating and rattling and I don't use it).
Now my fuel pumps won't start up. I assume they are activated as part of the ignition circuitry.
Do you guys think this pump issue is related to removing the brake control?
I've double checked all the wire harness connections at least twice. The only wiring diagram I have is in the Haynes manual and it is pretty hard to read (too small).
I'm currently going through my truck to refesh seals and such. I've had the engine and transmission out of the vehicle.
While doing this work I cut the wires to a trailer brake control and removed it (it was vibrating and rattling and I don't use it).
Now my fuel pumps won't start up. I assume they are activated as part of the ignition circuitry.
Do you guys think this pump issue is related to removing the brake control?
I've double checked all the wire harness connections at least twice. The only wiring diagram I have is in the Haynes manual and it is pretty hard to read (too small).
Last edited by E30tdf; Oct 31, 2006 at 08:28 AM.
Fleet Owner
Joined: Aug 2005
Posts: 23,667
Likes: 301
From: Easton,Ks
When you cut the wires you may have caused a short and now have a bad fuse or fuse link.
Here is a diagram of your system:
http://i54.photobucket.com/albums/g9...6460ElFuel.jpg
Here is a diagram of your system:
http://i54.photobucket.com/albums/g9...6460ElFuel.jpg
Thread Starter
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Tuned
Joined: Jun 2006
Posts: 363
Likes: 3
From: Graham WA
Fuel Pump Relay
Do you know the physical location of the Fuel Pump Relay ? There does appear to be any relays in the fuse box.
When I removed the brake control there was no battery power to the truck. But I still think these could be related issues.
Thanks for the wiring diagram (much easier to read)
When I removed the brake control there was no battery power to the truck. But I still think these could be related issues.
Thanks for the wiring diagram (much easier to read)
Fleet Owner
Joined: Aug 2005
Posts: 23,667
Likes: 301
From: Easton,Ks
Originally Posted by E30tdf
Do you know the physical location of the Fuel Pump Relay ? There does appear to be any relays in the fuse box.
When I removed the brake control there was no battery power to the truck. But I still think these could be related issues.
Thanks for the wiring diagram (much easier to read)
When I removed the brake control there was no battery power to the truck. But I still think these could be related issues.
Thanks for the wiring diagram (much easier to read)
The diagram I posted yesterday I have retouched it to make it easier to read.
Last edited by subford; Nov 1, 2006 at 09:45 AM.
