I plan to have my 2006 dodge Ram 2500 5.9 TD freshened up. Transmission flush, oil change, differential flush, fuel filter and valves adjusted. My mechanic says I should think about putting in an aftermarket lift pump. I wonder if my truck had one put in already by the previous owner. I also wonder if it's a MUST HAVE item. I don't want any injector problems but I also don't plan to add any power chips to the motor either. Hmmm thoughts? Note: my mechanic is not pushing the lift pump. He just recommended I put one in.
Wouldn't put one in til it leaks. Just did mine on my 97 350 because it was leaking. Second one in 194K. Took me about 2 hrs. to do Yes it's a must have item.
agesilaus wrote: What's the purpose of this lift pump? Just a backup for the fuel pump?
Lift pump,fuel pump transfer pump--one in the same just different referrals. Proper notation is Transfer pump, supplies fuel to the injection pump which increases the fuel pressure to the injectors, for better fuel atomization.
I would just get a transfer pump and pressure regulator and put in my tool box as an emergency back up. Both, not together have a tendency to leave one stranded on occasion.
95 Dodge CC #5 TST plate Flame Red/Silver
not totaly stock
2007 fiver
Tag Ma-haul has been suggested for a name but now The Shoe box
On the CR Cummins, even if the LP fails, the CP3 (injector pump) is capable of pulling enough vacuum to run without harming the CP3; the result is a little bit lower fuel rail pressure. On the older 2nd Gen Cummins (98.5-02), if the LP failed, it would kill the VP44 injection pump...
For ease of mind, a low pressure fuel alarm light from BD Fuel Pressure Alarm can be installed. My dad has one of these on his '01 Cummins; light (LED) starts to flicker if the fuel filter gets clogged (he is running a chip and pulling more fuel as well).
I plan to add a LP pressure gauge on my '05 because I'm going to be installing a 2mic fuel filter in the next couple weeks and I can watch my pressure degrade over time for filter replacements.
agesilaus wrote: What's the purpose of this lift pump? Just a backup for the fuel pump?
The lift pump is located either in the tank or external of the tank depending on manufacturer and year on diesel pickups. The purpose if to pressurize the inlet of the high pressure injection pumps for proper operation.
As I said above, on the '98.5-02 Cummins, the VP44 injection pump MUST have a pressured inlet. If not it will die quickly; it is also lubed by fuel.
2005 2500 Cummins/48RE/3.73, QCLB, 4wd, BigHorn, Edge Juice w/ CTS + Turbo Timer, ISSPro Oil and LP pressure gauges in cubby hole, GDP 20/2 filters on frame rail, Custom Diesel Steering Box Brace
'10 Forest River Shockwave Toy Hauler 21'
Honda EU3000I Genny
vermont_blue wrote: I plan to have my 2006 dodge Ram 2500 5.9 TD freshened up. Transmission flush, oil change, differential flush, fuel filter and valves adjusted. My mechanic says I should think about putting in an aftermarket lift pump. I wonder if my truck had one put in already by the previous owner. I also wonder if it's a MUST HAVE item. I don't want any injector problems but I also don't plan to add any power chips to the motor either. Hmmm thoughts? Note: my mechanic is not pushing the lift pump. He just recommended I put one in.
Do not flush the transmission. The 48re does not play well with flushes. Just a filter and fluid change is all that is needed. Your truck already has a lift pump and it is mounted in the fuel tank. An aftermarket one is not needed unless you start adding more power to the engine. How many miles on the truck? Valve adjustment isn't needed until 150,000 miles.
It's cheap insurance. There is little to no indication when a lift pump goes bad as the hight pressure fuel pump will continue to suck fuel out of the tank. However, it's very hard on the pump and it will eventually kill it. Death of a HPFP carries with it a repair bill in the $3,000 range.
John (USN Ret) & Debbie
Tux (APBT/Dalmation)
'96 Monaco Windsor 36' DP 8.3 Cummins
Ready Brake & Demco Excali-bar
'02 F250 V10 w/ Banks Power Pack
'03 Ford Explorer
'04 Volvo S80 AWD
'05 Acura TL
240" Dragster 540 BBC
26' trailer
14' Boat w/9.9 Merc
vermont_blue wrote: I plan to have my 2006 dodge Ram 2500 5.9 TD freshened up. Transmission flush, oil change, differential flush, fuel filter and valves adjusted. My mechanic says I should think about putting in an aftermarket lift pump. I wonder if my truck had one put in already by the previous owner. I also wonder if it's a MUST HAVE item. I don't want any injector problems but I also don't plan to add any power chips to the motor either. Hmmm thoughts? Note: my mechanic is not pushing the lift pump. He just recommended I put one in.
Do not flush the transmission. The 48re does not play well with flushes. Just a filter and fluid change is all that is needed. Your truck already has a lift pump and it is mounted in the fuel tank. An aftermarket one is not needed unless you start adding more power to the engine. How many miles on the truck? Valve adjustment isn't needed until 150,000 miles.
Correct on the lift pump. When the lift pumps were mounted on the backside of the fuel filter housing they were a known problem. Usually failed after 60-80K miles. Easy enough to replace but a PITA just the same. In 2005 the factory began mounting the lift pump in the fuel tank and, largely, corrected the problem. As NavyDood says, unless you are going to start adding power to the engine, replacing the lift pump is not necessary.
I echo the comments above. No tinkering with the lift pump needed unless your truck is pre 05. Pre 02, it's almost required, 03-05, nice to have, 06+, not needed.
2010 Cougar 322QBS 5er
2007 Dodge 3500 SRW Megacab, 4x4, 5.9L Cummins, 3.73, 48RE auto HYPERTECH MAX ENERGY or DIABLO PREDATOR tuning MBRP 4" Turbo back Scangauge2 for Boost, Coolant temp, Rail press & Trans Temp
Torklift Stable Loads
As stated, no on the lift pump until it fails (rare on 05 and up). The pump sits in the fuel tank where its kept cool by the fuel. As for protecting your injectors, a second fuel filter with a 2 micron rating. Its installed between the OEM filter and CP3 pump would go a long way in protecting the injectors Glacier Diesel Power has a nice easy to install 2 micron fuel filter system. The filter mounts to the intake horn and works well.
2005 Dodge 3500 CTD QC, 2007 Forest River Cherokee 27RL
CR and Motor Trend both report: My wife says I'm the only one and the best she's ever had.
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