Fuel pump's?

i fixed my fuel guage today, there is a elec pump in the tank, & the lift pump on the engine?

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Billy
1995 Ram 2500 4x4 Cumins
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No pump in the tank... fuel is pulled from the tank by the lift pump (electrically driven) on the rear driver's side of the engine, then fed to the high-pressure injection pump (gear-driven by the engine - looks like a miniature inline-6 engine with 6 fuel lines coming out of it), which feeds the injectors.
And Cummins has two m's :)
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that is what I feared, someone placed a gas rig pump in the tank, I don't know why, but it is the same pump that is in my Dakota, with the same flaws. the screws had popped out of the slides, and it has a undersize filter on bottom, with a 12 volt pump in the center. I fixed the screws, and locked it in positioned so it will just touch bottom of empty tank, and I put a press nut on the new sending unit to keep the pivot point from getting slack. I don't think this was original equipment. but the truck runs good so I decided to leave it alone.
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Billy
1995 Ram 2500 4x4 Cummins
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Wow. Well, if it makes you feel any better, the '05 and up Rams with Cummins went back to an in-tank pump, and any '94 and up trucks that go into the shop for lift pump replacement get retro-fitted with the in-tank pump. It's not that it's a bad idea, but if it's really a gasoline fuel pump in the tank, it's going to put out about 45psi of pressure, which the diesel lift pump was never designed to take.
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is there a way to tell the retrofit pump from a gas pump?
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Billy
1995 Ram 2500 4x4 Cummins
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Easiest way would be to hook a fuel pressure gauge to the fuel supply line to the lift pump. I doubt this was done as an "authorized" repair, because 1) the in-tank pump has only been in use for less than a year, and 2) they would have removed the engine-mounted lift pump at the time of conversion.
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"Tom Lawrence"

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You're right - I stand corrected. The 12V's transfer pump is driven off a lobe on the camshaft. It wasn't until the 24V engine that they went to an electrical lift pump.
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