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Ford F-Series Fuel Pump/Fuel System

109 messages,  Last post on Dec 04, 2009 at 1:47 PM

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What is this discussion about? Ford F-150, Truck

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#41 of 109 Re: fuel tank problems [wibble2] by rickmyster58 Jan 24, 2008 (4:36 am)
Replying to: wibble2 (Nov 24, 2007 12:40 pm) Rick here from Miami Fl. I just finished installing the front fuel pump in my 94 F150. I had to remove the drive shaft and the tank, cause the pump sits on top of the tank. my truck has two tanks also and on the inside of the cab by the plastic kick plate by the drivers side and passangers side are two reset switches for the fuel pumps. you may want to check this.   Rickster
#42 of 109 Fuel pump doesn't stop pumping by rickmyster58 Jan 24, 2008 (4:43 am)
I recently replaced the front tank fuel pump on my 94' F150. after installing it, I turned the key on without starting it, and the pump would run for about 4 or 5 seconds then turn off. telling me that it got up to pressure. after a few days of trying to trouble shoot why it's running rough, I noticed that now the fuel pump dosn't stop. just sitting in the drive way I've wasted about a 1/4 tank of gas. lots of black smoke and black soot all over the floor. I removed the 20 Amp fuse to the fuel pump and it idles perfect. can the pump be over pressurizing, hence the pressure regulator be bad? There are two what I call top hats, they look like a 1 to 1 1/2 inch silver can thats in-line with the incomming fuel line and one in the loop that feeds the injectors. which ione of these is the fuel pressure regulator?   Thanks   Rickster Replies to this message: mickeymouse2 (Jan 24, 2008 5:14 am) rickmyster58 (Jan 25, 2008 5:38 am)
#43 of 109 Re: Fuel pump doesn't stop pumping [rickmyster58] by mickeymouse2 Jan 24, 2008 (5:14 am)
Replying to: rickmyster58 (Jan 24, 2008 4:43 am) Your fuel pressure regulator is always mounted on the fuel rail with a vaccum hose connected to it. Look for raw fuel leaking past the diaphram and being sucked through the vaccum line, this might be the cause of the black soot. The other inline device you described is most likely a one way check valve. Please understand, Ford used numerous designs for duel tanks and there is also a lot of what is clasified as conversions, an added tank set up. Replies to this message: rickmyster58 (Jan 25, 2008 5:38 am)
#44 of 109 Re: Fuel pump doesn't stop pumping [mickeymouse2] by rickmyster58 Jan 25, 2008 (5:38 am)
Replying to: mickeymouse2 (Jan 24, 2008 5:14 am) thank you for your reply. I know that I have multiple problems with the truck again it's been sitting for 5 years. with no battery in it. after installing the new front tank pump, for the first day I got the engine to start, idle was great...no check engine light. all seemed well. but now its eating full like crazy and thats just sitting in the drive way. can you direct me where to go to learn how to do the paper clip method the get codes from the computer?   thanks again   rickster
#46 of 109 Where is a good place to buy a reconditioned ECM by rickmyster58 Jan 25, 2008 (6:14 am)
I would like to find out where I can get a ECM for my 94' F150. preferably re-conditioned.   thanks Rickster
#47 of 109 F150 Fuel Pump by sacplumber Feb 08, 2008 (11:31 am)
We bought a 2001 F150 last year from my inlaws and two days ago it just stopped running. My husband believes that it is the fuel pump, which from what I am reading sounds like a very involved process to change, but his father indicated he just had the fuel pump changed out two years ago. Is it common for this to occurr with F150's or is there something else we should be looking at before we try changing the fuel pump?   The check engine light is not on and we have already changed the filter.   Thanks for any advice. Replies to this message: diehardford (Feb 09, 2008 5:34 pm)
#48 of 109 Re: F150 Fuel Pump [sacplumber] by diehardford Feb 09, 2008 (5:34 pm)
Replying to: sacplumber (Feb 08, 2008 11:31 am) Make sure the fuel cut out switch is operating. This switch cuts off the fuel pump in case of a collision. It is located inside the front seat passenger side kick panel . You should have had to unplug this switch to change out the fuel filter. There is a reset button on this switch make sure it has not tripped.
#49 of 109 Need help! by asallee Mar 04, 2008 (6:30 pm)
I have a 1986 F250 XLT 4x4 w/4 barrel carb. Tons-o-miles. Duel fuel tanks that I have not been able to use (at least not the rear one). Front one was working fine. The truck started to run rough and use fuel like I had stock in Shell! Not good. Now it seems to get no fuel to the fuel filter (its clear glass) and I have never been able to hear a pump running. Is there a pump in both tanks? What is the device mounted on the frame rail beside the forward tank that has all the fuel lines and electrical connection going to it? Replies to this message: mike9408 (Apr 16, 2008 5:05 pm)
#50 of 109 Re: 1990 Ford f150 fuel pump relay [scubarash] by mike9408 Apr 16, 2008 (4:55 pm)
Replying to: scubarash (Jul 13, 2006 4:46 pm) I would suggest checking the fuel pressure regulator on the engine. It sounds to me like your regulator is returning most of the fuel to the tank, thus taking longer to shut off, especially since you are having the same problem with both tanks. Mike

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