Good day. A couple of things can cause your problem. First thing you can try is to connect a 12v supply to your fuelpump to see if its running. both positive and negative. There will be a positive supply present on the pump with ignition on. Its the negative wire thats being switched by a relay that is triggered by an electronic pulse censor. This censor works of a toothed gear on the front pulley. This censor also triggers the injectors as well as your spark. So if you have spark on the sparkplugs it means the censor is ok and that means your fuel relay is faulty. Most of the times its the fuel relay.
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SOURCE: 2004 ford E350 no power to fuel pump
put a test light on the ground wire to a 12v power source and see if the pump is grounded properly
SOURCE: 1998 350 Silverado will not start
I believe that you have throttle body injection (TBI) Take off the air cleaner and have someone crank the engine look at the injectors and see if fuel is seen..Do you or have you smelled fuel when you were recently attempting to start truck???? if so this sounds like you are not getting spark....if you havent smelled fuel try priming TBI with gas and see if the truck fires...If so you know that problem lies in fuel delivery... On TBI systems it is very important that a conicle spray pattern is delivered by injectors for proper ignition if injector drips fuel into TBI this could cause a no start condition...To see if spray pattern is correct you can use a timing light if available...Hook it up as normal (red positive post and black negative post and pick-up on #1 spark plug wire) point light at injector and have assistant crank engine light allows visibility to spray pattern.....also check the fuel pressure regulator and vacuum lines....Hope this helped you..let me know if I can help anyfurther....Good Luck!!!!
SOURCE: no power in fuse box for fuel pump
If there is no power to the fuse block then there has to be a main relay check that to see if it is blown. it is usualy located in the fuse block undr the hood.
SOURCE: RENAULT MEGANE 1.6 FUEL PUMP RELAY CLICKING
i was told i needed a new fuel pump relay for my renault megane but when i put in the new one it only worked for a few minutes. the only way i can get my car to work now is by inserting some wire into two points on the relay bos and bypassissing the cut off device.any suggestions?
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