Ram 2500 Heavy Duty fuel questions...

[gustavosj98]

hello guys, i'm new here in the forum and sorry if i posted that in the wrong place...
ok, my problem is the following: my dodge ram 2500 5.9 Cummins 24V '06 have a problem after i ride +/- 500km of distance, it loose some part of engine force gradually, and the rpms don't give up. but only if i ride a long distance like that. talking with friends, they have simmilary problems with a eletric pump inner the fuel tank. but in my pdf manual, this eletric pump shows acoplated to the filter... in my dodge ram, doesn't have this pump with the filter, and i wanna know more about that...
ok guys, if you help me i thank a lot.
other question what manuals don't explained... how is the pressure and flow rate of this pump? the manual shows only current (amperes)

 

[gustavosj98]

keep calm guys...

ok, before i take another longer discussion here (Brazil is so hard to do mainteance in that imported vehicles, cause the people have a incorrect vision about this and take much $$$$$$$) and look what i found:

FUEL TRANSFER PUMP

ELECTRIC FUEL LIFT PUMP
'03-'04 trucks have a Carter sliding-vane type lift pump attached to the fuel manager head on the engine, supplying ~15psi pressure, internally bypassed, with an internal pre-filter screen
'05^ trucks have a rotary-vane type lift pump in the fuel module in the tank, supplying ~ 9psi, externally bypassed, returning excess fuel to the tank, with a pre-filter screen

DESCRIPTION
The '05^ fuel transfer pump (fuel lift pump) is part of the fuel pump module .
The fuel pump module is located in the fuel tank.
The 12–volt electric pump is operated and controlled by the Engine Control Module (ECM).
The ECM controls a relay in the Intelligent Power Module (IPM) for transfer pump operation.

OPERATION
The purpose of the fuel transfer pump is to supply (transfer) a low-pressure fuel source from the fuel tank through
the fuel filter/water separator to the high-pressure fuel injection pump.
Check valves within the pump control direction of fuel flow and prevent fuel bleed-back during engine shut down.
Operating pressure is 9psi @ 50gph, maximum current flow to the pump is 5 amperes @100 percent duty-cycle..
The transfer pump is self-priming: when the key is first turned on (without cranking engine), the pump will operate
for approximately 2 seconds and then shut off (Note: When ambient temperatures are cold enough to cause the
intake air heaters to operate, the fuel lift pump will operate during the entire intake air pre-heat cycle). The pump will
also operate for up to 25 seconds after the starter is engaged, and then stop if the engine is not running.
A safety feature ensures the pump will shut off immediately if the key is on and the engine stops running.
The fuel volume of the transfer pump will always provide more fuel than the fuel injection pump requires. Excess
fuel is returned from the injection pump through the COV overflow valve back to the fuel tank.

The oem lift pump is of the flow-thru-when-failed type - the internal gearotor lift pump in the CP3 will pump 20" vacuum, and is designed to pull fuel from the tank thru a filter head - if the replacement aftermarket remote lift pump is not flow-thru, the engine will stop when the lift pump fails.

this is my experience shared with you, i will do the work and after i return to say if it get right or no. thanks to Cumminsforum.com CP3 injection pump system - Dodge Cummins Diesel Forum for the help

 

[gustavosj98]

well, now assembled, but taking a scan (my scanner is a Launch X431 Master) have an trouble code... p0305. in a researcch, this code is #5 cylinder missfire, but apparently the engine looks good. i've also changed the fuel filter, i really don't understand