I have a 2004 2500 cummins, under 100k, stalled on free way hauling horse trailer with 2 yards of gravel in it. Had truck towed to gas station up the road first ( had a 2 part tow) filled the 1/2 tank to full thinking it may have been a half broken fuel line in tank, truck started. Looped back around to pick up horse trailer, hooked up and went about 1 mile and died out again. I got it started and was able to limp it home ( about 10 miles) as the tow truck hauled my horse trailer. I checked the fresh fuel filter, was fine. Closed everything back up but forgot to close drain valve on fuel filter for about 6 tries, remembered and then closed it. Still no fire after cycling ignition about 15 times. Pulled banjo fitting on injector pump to see if any fuel came out as i bumped starter, got nothing.... so is there anything else i should do before getting a lift pump which IS on the back of the fuel filter FYI. Is there a relay or electrical anything to test first. The LP sound like its activating, at least the first 2 seconds. Thanks for any input James
James,
Since you are pulling a vacuum to draw the fuel to the fuel pump a very small pin hole will cause the pump to not draw fuel. On my Cummins I connect a fuel line to the tank side of fuel pump and ran it into a pail with diesel fuel to verify an air leak in the line to the tank. The ECM electronics control module on mine a 1999 turns the pump on. You could use a jumper 12 volt to the pump verify it is getting 12 volts. You should be able to hear it running.
I replace the factory fuel pump on mine with a Fass pump and used a small relay to power the Fass pump without using the ECM and it works great.
Keith (waymaker10)
SOURCE: Where is Fuel Relay for 2004 Dodge Ram 3500 Diesel Truck
it doesn't have a fuel pump relay it has a fuel pump control unit and it is located on the chassis back quarter drivers side near the tube cross member for chassis on top of chassis rail near bed mount. locate the rear springs front perch and it will be above that on top of rail.
hope this helps. good luck and please ask any question you have.
Testimonial: "Thanx for info..no wonder I couldn't find Relay! "
SOURCE: 1995 nissan pickup truck fuel problem
Fuel injected or carb? Make sure fuel line itself is clear. Some pumps are designed to self regulate (carb systems) some continually pump and a psi regulator sends back the excess fuel back to the tank (fuel inj systems) If the line is obstructed then pump can't deliver fuel fulltime.
If you think pump is not on consistent, try running a dedicated wire through a switch directly to the pump. If it works then you are looking for an electrical fault going to pump. Good luck.
SOURCE: 6.2 diesel will not bleed diesel
Make sure all lines are light when turning engine over.While turning engine over loosen the a line closes to pump or the fuel filter.You should get some fuel.Then continue on all lines working farther away.
SOURCE: What makes 2001 Pontiac Montana stall and die while driving, speed doesn't matter?
Amazing.....At this very moment in time.....my 2000 silhouette is doing the same thing....if you were unaware.....ventures Montana's and silhouette are from the same mold. Very similar in all aspects. My diagnostics have got to the fuel pump part of suspects....but I have already checked filter, relays, fuses and ignition electronics....my latest suspect is the pressure sensor that monitors the pressure of the gas tank....there is also a pressure sensor on the injector rail I'm suspicious of. I'm going to find out how to place each sensor in "okay ....fuel pump turn on and pump fuel to the throttle body" to check them. In my case....I don't smell any gas after turning the engine over....trying to start it.....sometimes for over an hour....never any gas smell....so I suspect fuel delivery is the problem. The fuel pump has several sensors that control whether or not it needs to run....and pump gas. I can hear my fuel pump run for 2 or3 seconds when I turn the ignition to the on or start positions.testing all of those sensors is my plan of action for this 3 day weekend. Your on track with your work and suspicion of the position sensors......vacuum leaks will follow the sensor checks. Vacuum leaks could cause a couple of sensors to fail too.....I dropped my fuel tank last weekend....and found the fuel pump to be in working condition.....I removed my fuel filter and punched a hole through it for free flow.....to eliminate it from the list...after checking the vacuum angle....I will move to the electronics side.....with the ignition switch first and the transmission position indicator switch following.....I've plugged my trouble code reader in and didn't get any indication of any failed electronic devices......my problem and your problem seem to be very similar, except that I am doing all of my work on the van myself. I will try to keep you informed of my diagnostics through fix it.it would be nice to know how yours is advancing too.....there are a few directions you can progress into.....hope one solves your problem....if not.....there will be more ideas to come....until I solve my problem....good luck to. Us both and onward we go......Nick.ps couldn't spell or grammar check because I'm using my phone to compose....and the typing pad covers the entirescript being typed. Sorry for any problems. Associated
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