Electric fuel pump will not stop!

Reply Subscribe

Thread Tools

Search this Thread

Feb 23, 2011 | 03:01 PM

lamar804

Thread Starter

Senior User

Joined: Jan 2011

Posts: 205

Likes: 0

From: Richmond, VA

Electric fuel pump will not stop!

Well I had some time to mess with my truck today. So I decided to install the new bowl on my 4160. After I installed it, the truck started right up, ran for a few minutes and shut off.
The carb was flooded with gas, overflowing!! The previous owner installed a toggle switch for the fuel pump, I flipped the switch and it wouldn't stop the pump! I disconnected the battery to stop it.
Now, I only installed the fuel bowl today! What could cause this to happen? Confused!
BTW, it's a '86 F350 460

Feb 23, 2011 | 03:13 PM

glovemeister

Cargo Master

Joined: Nov 2010

Posts: 3,244

Likes: 40

Well for one why did it have the toggle? I am thankful my fuel system was intact but the PO did jack it around with braking systems for his trailer.

Feb 23, 2011 | 03:31 PM

lamar804

Thread Starter

Senior User

Joined: Jan 2011

Posts: 205

Likes: 0

From: Richmond, VA

Quote:

Originally Posted by glovemeister

Well for one why did it have the toggle?

I have no idea. I even pulled the wires off it, and it would not shut the pump off. Today is the first time it's done this. Where should the fuel pump be wire to? I need to re-do everything the PO did to this truck!

Feb 23, 2011 | 03:35 PM

glovemeister

Cargo Master

Joined: Nov 2010

Posts: 3,244

Likes: 40

Yeah damn, I don't know maybe he has a manual fuel pump on it and kicks on the auxillaries/electric pumps for additional flow when climbing a hill. Look near your timing case should be visible a mech fuel pump. I would buy a Ford book and check everything out.

Feb 23, 2011 | 03:39 PM

bashby

Post Fiend

Joined: Nov 2005

Posts: 7,437

Likes: 4

From: Charles Town, W bygod Va

The 460's had a different system than most and I'm not real familiar with it but it almost has to be a stuck fuel pump relay. If you reconnect the battery does the pump still run? If so try tapping on the relay and see if it unsticks. If that doesnt work unhook the relay. Sorry, but I dont know where the relay is, maybe near the master cylinder?

Feb 23, 2011 | 05:13 PM

lamar804

Thread Starter

Senior User

Joined: Jan 2011

Posts: 205

Likes: 0

From: Richmond, VA

Quote:

Originally Posted by bashby

Thanks! Yes it continues to run when I reconnect the battery. I'll look for the relay and give it a try. Hopefully that works! Either way, I think I need to rewire the whole thing. I'm just happy it did this at home.

Feb 23, 2011 | 06:31 PM

bashby

Post Fiend

Joined: Nov 2005

Posts: 7,437

Likes: 4

From: Charles Town, W bygod Va

If you sign up (Free) at autozone.com you can access some wiring diagrams and, I believe component locations...I'm feeling spunky, looked it up. "Under hood, driver side, rear side of shock tower, mounted on firewall " Thats quoted from their site, Its worth signing up to be able to access the repair manuals.