Fuel pump relay - I believe my fuel pump relay is bad. . Asked by WHITE3281 Jul 19, 2017 at 11:02 AM about the 2004 Ford F-150 FX4 Ext. Cab 4WD . If it runs that usually means the problem is on control side of relay, voltage and ground. STARTING PROBLEM I have a 2000 ford f150 5.4L the truck cranks but will not . There is good fuel psi, just changed the fuel pump relay. the problem stop for a . This also rules out the relay. I would be willing to bet that you either have a connection problem at the tank, or you have a bad fuel pump. Are you using a Ford . Now we checked fuses and relays and all seemed fine so we thought it is the fuel pump. A day after I stopped by to try again and it started. Ok I have recently bought a 1998 Ford F-150 V6 4.2L 2WD and when . I have checked the fuses and the and the fuel pump and ECM relays . 27 thg 4, 2010 - I've since replaced the fuel pump relay, fuel pump, and fuel filter and still can't get . Are you really sure that this is just a fuel delivery problem? 23 thg 6, 2008 - Electrical problem 6 cyl Two Wheel Drive Manual 192500 miles I just . Changed the fuel pump with 2 new pumps, filter, electrical pig tail, relay and checked fuses. . 1993 Ford F150 Stalls,fuel Pump Runs Even If Engine. MEMBER; 2004 FORD F-150. Electrical problem V8 Four Wheel Drive Automatic 7000 miles. Where is the fuel pump relay located and the fuses? Do you. Your 2012 Ford F150 1/2 Ton - Pickup runs on more than just fuel, it runs on electricity. . A burned out fuel pump relay won't allow the fuel pump to power on, leading to a no-start . A multi-function relay problem can sometimes be easily fixed.