As I've mentioned previously, gasser (patooie!) concepts cannot always be applied to Diesel service - the V6 pump is a hi-pressure pump, with an external bypass-type regulator dumping back into the tank - gasoline does not readily foam, as does Diesel fuel, so this does not cause any problems in that system - the regulator is that hump on the top of the module, the bypass return is the straight black tube beneath, dumps directly into the pickup area
The pump itself would work in Diesel fuel - it's what to do with the bypass volume over 9psi that would be problematical - talk about yer heavy aeration, and directly into the area that was specifically designed to prevent air-bubble intake, even at low fuel levels where that is problematical
Added to that, a pressure regulator is not by nature flowthru - dead lift pump = hope yer AAA membership is paid up!
There's also some evidence that starving the CP3 damages the CP3 - which would happen as the regulated pump slowly died.
So, manana will tell the tale - 'course, this ain't inexpensive - even at this stage, yer lookin' at 325bucks, pre-owned.
'Course, R&D is always more expensive than the finished product, but it should come in at under 200bucks for a pre-owned module with harness, and a new pump.
The electrical connector is identical, even to the wiring scheme - (ground - sender - sender - pump) - pump is blank on the Jeep, but the wiring is conveniently provided to the connector, inside - simply replace the harness with the V6 version, and yer good to go.
Reference -
http://www.lostjeeps.com/forum/phpBB3/vie ... hp?t=23099
Still need to pull the module from the tank - Jeep provided a maintenance port in the rear floor-pan on the earlier model KJ - is it still there on the '05-up?
The V6 module has the electric pump, but no external provision for fuel return - regulator bypass return is internal - fuel rail return is via another port on the tank
The Diesel system needs a fuel-return port - does the CRD fuel sender module have the return or is it at the other port on the tank - does it have provision for lift pump installation?
Can the Diesel upper unit with two ports be assembled to the V6 lower unit, using a Cummins replacement pump from NAPA\equiv?
They invariably come with full replacement internal module wiring.
Is the V6 module pickup-screen area identical to the 2.8 Diesel unit?
The Cummins screen is roughly 4x the area of the V6, covering the entire bottom of the plastic housing
Will the Cummins module fit with little\no modification - the fuel supply\return port diameters are identical, using the same fittings as the Jeep - what about the extension tubing from the module to the Jeep fuel pipes?
Some modules I looked at had the plastic extension tubing bonded to the module ports
Questions, questions - I tell ya, folks - this is worse than worryin' about who shot JR - I won't sleep a wink, tonite..........