Question about 2004 Dodge Ram 3500 Truck

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Diesel cuts out while driving

My 2004 3500 laramie 6spd. manual cummins diesel cuts out while driving. Only 52,000 miles. Truck will suddenly cut out and take back off again. Dealer said problem was lift pump @ $785.00. By-passed lift pump with new F.A.S.S. (fuel air separation system) electric fuel pump system but problem still there. Anybody got a clue?

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  • Anonymous Mar 05, 2009

    2004 ram diesel cuts out auto does not shift Problem fixed throtle position sensor changed by dealer 53000 miles on truck cost $100 fixed under 70000 mile waranety

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Its not the lift pump i been dealing with it for a year now and no help from anybody just a bunch of parts changed and time wasted and money spent to still have the same problem.. dont wast the time changing lift pump as long as you have fuel psi aprx. 10 psi to pump... if you figure out the problem let me know thanks... mine is a 01 made in canada.

Posted on Aug 08, 2012

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Install a intank lift pump

Posted on Jan 21, 2009

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Cummins diesel in 2001 Dodge is cutting out and mild surge. code#s are P0500,P0370 P1693


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1 Answer

5.9 DIESEL ENGINE CUTS OFF WHEN DRIVING


Hi

From what I can gather, the engine cuts out and then the check engine light comes on, not the other way around, check engine light and then cut out?

If you switch on the ignition but do not start the engine, you will see that the check engine light is on. It won't go out until you start the engine.

When the engine cuts out, it is just as though you have switched on the ignition without starting the engine, the key is in the exact same position, and therefor the check engine light comes on purely and simply because the engine isn't running, not because it has sensed a problem, hence you have no fault codes, its perfectly normal.

If, however, the light comes on then the engine cuts out, then the reason for the lack of codes could be a short term electrical failure. If the power to the ECM were briefly cut then the codes would be erased immediately, but this would have to be a complete failure because there is a KAM (Keep Alive Memory) wire, which supplies permanent power to the ECM if I'm not mistaken. A good candidate for a complete failure is a bad main ground cable (loose or broken).

Wiring problems a just the worst ever to trace.

Just a thought to hopefully point you in the right direction.

Very best regards

Geordie

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