Engine/Transmission (1998.5 - 2002) "01" lift pump solution

[Zee]

Lost lift pump at 30,000 miles. Dodge dealer charged an exorbitant amount to R & R. Early on I installed a pressure gauge and an aux pump parallel to the fuel system with the appropriate check valves and pluming. When the fuel pressure went to three pounds I selected the aux pump and the pressure went to 15 to 25 lbs. I belive this saved the high pressure injection pump, for I have driven 1600 miles pulling a fifth wheel trailer since then with out any indication of injection pump problems. I would like to install two remote aux pumps with an either/or switch and eliminate the factory pump. I would like to use NAPA fuel pumps for they are available just about everywhere but the pressure is pretty high. I belong to several RV clubs and go pretty remote at times, the reason for two pumps. My questions are if I use the existing feed for the factory lift pump, from the eng. control unit will it set a trouble code? What is the max fuel pressure the high pressure injection pump will tolerate with out incurring damage? And the last on does any one know of an aftermarket off the shelf fuel pressure regulator that is diesel compatable and regulates to 15 lbs. pressure?





Zee

TDR # 4610046

Cordelia, California

 

[Steve St.Laurent]

Bringing this to the top after moving it from the website forum

 

[rkressg]

My questions are if I use the existing feed for the factory lift pump, from the eng. control unit will it set a trouble code?



Doubtful, just use a relay to power the new transfer pumps. The power feed for the stock lift pump is transferred through the ECM. Also, if you do power these new transfer pumps, ensure that they are connected to a power source that turns off during cranking, or else you could be faced with a "hard start" condition from having too much (more than 3-4 psi) fuel pressure during cranking.



What is the max fuel pressure the high pressure injection pump will tolerate with out incurring damage?



Between 7-17psi is the desired operating range. Some here are operating these pumps with up to 30psi of head pressure on the pump though. The FASS will generally produce 17psi out of the box; which is fine for stock applications.



And the last on does any one know of an aftermarket off the shelf fuel pressure regulator that is diesel compatable and regulates to 15 lbs. pressure?



Not off the top of my head, but I know they are available, I just can not think of any particular brand.



-Rich

 

[R-N-R]

I believe that a few TDR members are using the Aeromotive Universal Bypass Regulator, P/N 13301. I picked mine up from Summit Racing Equipment

 

[BillH]

Why did you pay the dealer to install a new one? That is covered under the 5 yr, 100,000 mile warrenty.



BillH

 

[SKneeland]

"Why did you pay the dealer to install a new one? That is covered under the 5 yr, 100,000 mile warrenty. "



haha, good luck with that one

 

[rweis]

I use a Mallory 4307M bypass regulator after my OEM lp to hold fuel system to 12 psi. My lp is on the frame. So far about 1 1/2 years an working fine.



Bob Weis

 

[Supermod56]

Carter makes one that puts out 15 psi, they make the stock pump for Dodge also. Summitt has them on their site. And the dealer installed my new L/P under warranty, don't know why they would charge you for that??



Tom



2001. 5 2500 4X4 5-Spd LB QC Black. Catcher ECM, DD Stage-1's, AFE, Bully Dog 4" pipe, ATS Exhaust Manifold, JAKE Brake w/shifter switch, Geno's Banjo's, 3 Autometer's on the A-Pillar, Gear Vendor's O/D, Firestone Air Bags, Redline Oil throughout.