jaseel Posted August 25, 2013 Report Share Posted August 25, 2013 Hi brothers ... We purchased our 2008 Ford Expedition 4 1/2 years ago and have really enjoyed it as it has posed very few problems. About 2 months ago, we started experiencing problems with starting the car. I took it to an independent technician and he diagnosed it as a broken fuel pump. He had a slightly used replacement pump so we had the old one replaced. Things were fine for about a month and then suddenly the problem came back. This time I took it to a proper Ford center and guess what?? They said I need a new fuel pump!! On top of that ... the part is not available at the moment. No other dealers have a brand new one either, nor can they get it delivered anytime soon. I have searched online without any luck. In the meantime me and my family are stuck with a truck that won't start. Link to comment Share on other sites More sharing options...
sheikh Posted August 27, 2013 Report Share Posted August 27, 2013 Hi there jaseel ... My understanding is that the electronic part is subject to cracking and erosion that allows moisture to enter, fry the circuits and make the pump malfunction. Link to comment Share on other sites More sharing options...
hamiduae Posted August 27, 2013 Report Share Posted August 27, 2013 Ford sold thousands of units of this vehicle. It should not be so difficult to get a hold of a fuel pump as it is a basic part after all. User-friendly truck? Maybe not. Link to comment Share on other sites More sharing options...
kadri Posted August 28, 2013 Report Share Posted August 28, 2013 Hey buddy ... you know based on your diagnosis the relay is a lot more suspect to me than the fuel pump. You said you changed pumps but the problem is still there right? Link to comment Share on other sites More sharing options...
ernest Posted September 5, 2013 Report Share Posted September 5, 2013 Hi. I am a senior technician with over 25 years of experience. You have to replace the fuse box that contains the built-in fuel pump relay. The relay is mentioned as a non-serviceable part in the owners manual. To replace this relay, you have to replace the fuse-box. There are 12 quick connect plugs and a 10 mm socket to remove the wire going through the firewall. Yes, this wire is removable after you pop the cover off of the connection. A 1/2 inch socket will unbolt the fuse-box from the inside wall at the front seat passengers right kick panel. Two sockets are all the tools that you need. There are two wires going to the fuel pump near the left rear tire. Make sure that the fuel pump is getting power with a test light. This can be checked at the module behind left rear tire, on top of the frame. You can see it at the 2:00 position at the rear tire through the fender-well. The plug is on the front side of the module. You will have to lay under the truck to access this wire. A shield mounts the module to the frame. Two small screws hold the module on the shield and two more hold the shield on the frame. Coming out of the fuse-box is a dark green wire with a yellow stripe. This wire sends power out of the fuse-box to the inertia switch to the fuel pump. If you have power at #12 fuse but none at the green/yellow wire, the relay is bad. This wire is on the top of the fuse box, towards the firewall and bottom left wire in the plug. Again, to replace this relay on this vehicle, you must change the fuse-box. Hope this helps. Link to comment Share on other sites More sharing options...
anil Posted September 7, 2013 Report Share Posted September 7, 2013 Hi ernest, very detailed response unlike many other ford owners here. Good to have you around. Link to comment Share on other sites More sharing options...
frans Posted September 15, 2013 Report Share Posted September 15, 2013 Broaden the scope of your inspection. And go to a recognized technician esp if you don't have an idea about this issue. It could be a blown fuse, a plugged fuel filter or a bad control module. Link to comment Share on other sites More sharing options...
ankit Posted September 16, 2013 Report Share Posted September 16, 2013 Wow seems to be a complicated situation ... Not at all surprised. Ford stands for 'Found On Road Dead'. Link to comment Share on other sites More sharing options...
kadri Posted September 16, 2013 Report Share Posted September 16, 2013 According to my research and expertise, the original equipment includes a faulty design which causes this part to frequently malfunction. It is probably in all models between 2006 to 2010. My understanding is that the design defect has been corrected in the newer replacement part although obviously the installation of a used OE pump with a defective design may well result in a similar malfunction. Link to comment Share on other sites More sharing options...
leo Posted September 16, 2013 Report Share Posted September 16, 2013 After so many explanations this probably wont matter but ... Have you tried turning the ignition to ON and letting the fuel pump pressurize the system for 5 or 10 seconds before cranking it? On some cars that helps 'em crank the first time. Link to comment Share on other sites More sharing options...
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