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Car Forum / Ford / Ford Trucks / November 2006f150 problems?
ok my fuel pump wouldn't kick on, so I thought it was the pump. So I replaced the pump and the tank and the fuel filter and put in a new switch on the dash, but my pump won't kick on. When I had it apart I made sure that everything was getting power and working properly. I went out the other day to work on it and I turned the key and the pump just kicked on and it ran and I tried it later that day and I turned the key and the pump didn't kick on. I'm at a loss as to what it could be. I can replace anything, but I mean it sounds like an electrical issue, but I checked all the wires and double checked everything and it all looks fine, but it is like the pump will get power and then not get power. I even spliced into the ground on the pump to make sure it was working and the ground is fine, because sometimes it will kick on and run fine and then other times it doesn't I'm at a loss the only thing that I haven't replaced is the inertia switch and the relay, but the relays are pretty much all the same and you can mix and match them in the fuse box and the pump still won't kick on. please any ideas, because I'm trying not to take it to a garage since I aleady did pretty much all the hard work. >ok my fuel pump wouldn't kick on, so I thought it was the pump. So I >replaced the pump and the tank and the fuel filter and put in a new [quoted text clipped - 14 lines] >because I'm trying not to take it to a garage since I aleady did pretty >much all the hard work. Depending on year and powertrain config, it could be different things. Do you have any of that? It would help some of the more knowledgeable here to help you. Lugnut I have a 6 cyl, manual tranny with 4 gears and overdrive. you should check the grounds with a meter. old john Hello, mitsurugi3644@hotmail.com! You wrote on 28 Oct 2006 08:44:03 -0700: m> ok my fuel pump wouldn't kick on, so I thought it was the pump. So I m> replaced the pump and the tank and the fuel filter and put in a new m> switch on the dash, but my pump won't kick on. When I had it apart I m> made sure that everything was getting power and working properly. I m> went out the other day to work on it and I turned the key and the pump m> just kicked on and it ran and I tried it later that day and I turned m> the key and the pump didn't kick on. I'm at a loss as to what it could m> be. I can replace anything, but I mean it sounds like an electrical m> issue, but I checked all the wires and double checked everything and it m> all looks fine, but it is like the pump will get power and then not get m> power. I even spliced into the ground on the pump to make sure it was m> working and the ground is fine, because sometimes it will kick on and m> run fine and then other times it doesn't I'm at a loss the only thing m> that I haven't replaced is the inertia switch and the relay, but the m> relays are pretty much all the same and you can mix and match them in m> the fuse box and the pump still won't kick on. please any ideas, m> because I'm trying not to take it to a garage since I aleady did pretty m> much all the hard work. With best regards, ajeeperman@comcast.net. E-mail: ajeeperman@comcast.net I tapped in the ground coming out of the plug that goes into the fuel tank and ground it against bear metal on the frame and it did nothing. I also checked and double checked the wires going all the way up in to the fuse boxes and they all look fine and are in their plastic binder. it may be a ground issue, but I have 2 tanks and when one tank doesn't work neither will the other one. and when one works I will switch tanks and the other one works as well. It may be a ground, but all the wires looked fine. how do I check the ground more accurately or any other ideas? I'm stumped > ok my fuel pump wouldn't kick on, so I thought it was the pump. So I > replaced the pump and the tank and the fuel filter and put in a new [quoted text clipped - 14 lines] > please any ideas, because I'm trying not to take it to a garage since > I aleady did pretty much all the hard work. When it won't start, is there power to the relay? Does the power make it to the pump? Is the ground good? What year truck is this, Always important when asking questions  SignatureStephen W. Hansen ASE Certified Master Automobile Technician ASE Automobile Advanced Engine Performance ASE Undercar Specialist http://autorepair.about.com/cs/troubleshooting/l/bl_obd_main.htm http://www.troublecodes.net/technical/ http://www.familycar.com/Alignment.htm ok how do I check to make sure power is going to the relay. and I'm pretty sure it is cause it sometimes kicks on, but then again I'm not sure and thanks for the webpages but I don't have a code machine and my check engine light isn't even coming on. So I don't think it would throw out a code if the check engine light isn't coming on, but I'm not sure. Also if the relay isn't getting power what would stop it from getting power? OK, Your in the same year range as my dad and mine Fords, just different motors. Do you have a 12v test light and multimeter? There are usually 4 slots for the fuel pump relay. two will be hot and two will be grounds at one time or another. Look at the relay.there may me a schematic on it; one of the hot and grounds job is to connect the other hot and ground together. When you cycle the key, the relay should click once for about 5 seconds, then if the truck doesn't since the engine running it shuts off. So with a test light turn the key on and look for power at all 4 pins of the relay, try to find the two with power, remember , one of those will only have power for about the first 5 sec of the key turn. IF you can get to and see the back of the relay connector the power wires for the fuel pump should be yellow in from battery, dark green yellow out to fuel pumps and red in for the relay activation and tan/light green out for its ground. With the truck off applying 12v to the dk green yellow wire should start the truck if the relay was bad. SignatureStephen W. Hansen ASE Certified Master Automobile Technician ASE Automobile Advanced Engine Performance ASE Undercar Specialist http://autorepair.about.com/cs/troubleshooting/l/bl_obd_main.htm http://www.troublecodes.net/technical/ http://www.familycar.com/Alignment.htm > ok how do I check to make sure power is going to the relay. and I'm > pretty sure it is cause it sometimes kicks on, but then again I'm not [quoted text clipped - 3 lines] > sure. Also if the relay isn't getting power what would stop it from > getting power? ok I went to advance auto parts and to a ford dealer and they gave me the same exact relay for my truck. I am asking for the specific location of the fuel pump relay on my truck, because I cannot find it and it isn't in the fuse box. Both places gave me something that like clips into something, but I can't find where it would go. Now I did ask them for the "fuel pump relay". So can someone please tell me where this device would go cause I would like to replace it, but I don't have a location on it and I will need the exact location please. I am losing my mind looking for it. > ok I went to advance auto parts and to a ford dealer and they gave me > the same exact relay for my truck. I am asking for the specific [quoted text clipped - 5 lines] > a location on it and I will need the exact location please. I am losing > my mind looking for it. Under hood, driver side, upper engine area, rear of air filter housing, mounted on wheelwell Autozone sucks for parts, but the web page is a handy source of infoWhitelightning what is the exact part number I need for a fuel pump relay on a 1992 ford f150 it is 6cyl with 4 gear tranny with overdrive. because I think I'm getting the wrong relay for it...? In the 1992 does the fuel pump relay go in the fuse box mounton of the driver's side wheel well. cause I think I'm getting the wrong relay. I fixed my truck. the problem was the diode that is located in the fuse box, so anyone having similar problems like me can pull out the diode and clean it to make sure the connections are good and/or replace the diode itself. What Diode? SignatureStephen W. Hansen ASE Certified Master Automobile Technician ASE Automobile Advanced Engine Performance ASE Undercar Specialist http://autorepair.about.com/cs/troubleshooting/l/bl_obd_main.htm http://www.troublecodes.net/technical/ http://www.familycar.com/Alignment.htm >I fixed my truck. the problem was the diode that is located in the fuse > box, so anyone having similar problems like me can pull out the diode > and clean it to make sure the connections are good and/or replace the > diode itself. in the fuse box under the hood and on the drivers side. There are a bunch of fuses and relays and a black piece that plugs in like a fuse, but it says "diode" in white acrossed the top of it. It is about the same size as the big fuses and I pulled it out and cleaned it up and that fixed it. For some unknown reason that diode which wasn't letting power go through and let the relays power up. Learn something every day; I will research this cause I don't see in in any wire diagrams. SignatureStephen W. Hansen ASE Certified Master Automobile Technician ASE Automobile Advanced Engine Performance ASE Undercar Specialist http://autorepair.about.com/cs/troubleshooting/l/bl_obd_main.htm http://www.troublecodes.net/technical/ http://www.familycar.com/Alignment.htm > in the fuse box under the hood and on the drivers side. There are a > bunch of fuses and relays and a black piece that plugs in like a fuse, > but it says "diode" in white acrossed the top of it. It is about the > same size as the big fuses and I pulled it out and cleaned it up and > that fixed it. For some unknown reason that diode which wasn't letting > power go through and let the relays power up. my truck is a 1991 ford f150 with a 6cyl engine and manual tranny with 4 gear and overdrive. and I'm assuming the ground is good cause sometimes the pump kicks on and it run fine, but then sometimes it won't kick on at all. I also have to tanks and it only has 2 pumps in the tank with FDM's, so there is no pump on the frame rail. Here is another thing when my one pump won't kick on neither does the other pump, so something isn't letting both of my pumps get power and when one kicks on then both my pumps work, So I'm at all lose. I replaced the one fuel pump and filter and it didn't fix it, so I'm assuming it wasn't the pump to begin with. please any ideas I also replaced the switch on the dash. any ideas? |
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