I'm ready for a lift pump....

Zonie · **Posted:** Mon Aug 04, 2008 11:05 am

I'm ready to install a lift pump. Advice on what brand? What vendor? Thanks, guys.

dgeist · **Posted:** Mon Aug 04, 2008 11:26 am

Zonie wrote:

I'm ready to install a lift pump. Advice on what brand? What vendor? Thanks, guys.

I like the mopar solution for its "elegance" and the fact that the system looks completely stock after you finish installing it. It involves no cutting of factory lines, but it does require wiring harness work inside and outside (which isn't expensive, just a little tricky for non-electronics folks) and the tank has to be dropped to install the new in-tank unit. The mopar/cummins unit is also a little pricey, but not enough to make me use something else.

Joe Romas · **Posted:** Mon Aug 04, 2008 8:49 pm

dgeist wrote:

Zonie wrote:

I'm ready to install a lift pump. Advice on what brand? What vendor? Thanks, guys.

I like the mopar solution for its "elegance" and the fact that the system looks completely stock after you finish installing it. It involves no cutting of factory lines, but it does require wiring harness work inside and outside (which isn't expensive, just a little tricky for non-electronics folks) and the tank has to be dropped to install the new in-tank unit. The mopar/cummins unit is also a little pricey, but not enough to make me use something else.

ME TOO

Bill.Barg · **Posted:** Tue Aug 05, 2008 12:50 am

Cummins In tank solution has these advantages, some shared with other solutions.

Uses existing automatic "off" logic. 25 sec run time with key position on but engine not running. This is a safety feature (wont keep pumping in an accident situation)
Priming functionality with key in "on" position. For filter replacement, etc
Pressurises the entire fuel line system, including suspect fuel tank flex connections.
Pump is disabled with removal of 10 amp fuse. (for visits to the dealership under warranty)
No cutting into fuel lines required. No additional leak points
Pump will not impeed fuel flow when off or broken.

Drewd · **Joined:** Mon Feb 06, 2006 12:24 pm **Posts:** 902

I like the Kennedy inline fuel pump. It won't impede fuel flow if it fails, it doesn't require dropping the fuel tank, and no worries about my gas guage being off. It also is hooked to the wiring so it won't run more than 25 seconds before engine start, etc..

dgeist · **Posted:** Fri Aug 08, 2008 9:56 am

Drewd wrote:

I like the Kennedy inline fuel pump. It won't impede fuel flow if it fails, it doesn't require dropping the fuel tank, and no worries about my gas guage being off. It also is hooked to the wiring so it won't run more than 25 seconds before engine start, etc..

Da. I considered that one long and hard an in the end, it was an issue of "will having something connected to the fuel lines under the body make someone think twice about honoring a warranty" and the answer is "probably". Also, I hate messing with fuel lines. It makes my better half grouse about the smell on my hands, even if it is Bio and smells like chicken

SBosco · **Posted:** Fri Aug 08, 2008 10:39 am

Drewd wrote:

I like the Kennedy inline fuel pump. It won't impede fuel flow if it fails, it doesn't require dropping the fuel tank, and no worries about my gas guage being off. It also is hooked to the wiring so it won't run more than 25 seconds before engine start, etc..

I was planning on doing the lift pump in the near future, but would like to know all the facts and options first.
The Cummins lift pump causes the fuel gauge to be off? Details please?

bugnout · **Posted:** Fri Aug 08, 2008 11:26 am

SBosco wrote:

Drewd wrote:

I like the Kennedy inline fuel pump. It won't impede fuel flow if it fails, it doesn't require dropping the fuel tank, and no worries about my gas guage being off. It also is hooked to the wiring so it won't run more than 25 seconds before engine start, etc..

I was planning on doing the lift pump in the near future, but would like to know all the facts and options first.
The Cummins lift pump causes the fuel gauge to be off? Details please?

When I installed my lift pump, no one had figured out that the fuel float arm is slightly different on the Cummins unit. This caused the fuel gauge to read low. Now its known. All you have to do is change the sending unit on the stock unit for the one on the Cummins unit. its a single connector and couple of nylon tie straps.

The Cummins in-tank lift pump will pass fuel even if the fuse is pulled or blown.

SBosco · **Posted:** Fri Aug 08, 2008 11:34 am

Oh, okay. That's not bad. I'm having a difficult time vizualizing what the nylon zip-ties are used for. To "permanently" attach the sending unit? any pics? Is there an illustrated "How to" with these extra steps? Thanks.

gmctd · **Posted:** Fri Aug 08, 2008 11:35 am

You can see the difference in the comparo pics in my thread - the longer Cummins arm hits the molded cradle in the tank - I bent the Cummins float arm to match the Jeep orientation during my install, so had and still have no problem with it - proper solution is to swapout the float sending modules, or the wire arms - either is just as easy as the other, as, other than that wire arm, the other components are identical, Cummins\Jeep

Joe Romas · **Posted:** Fri Aug 08, 2008 12:25 pm

SBosco wrote:

Oh, okay. That's not bad. I'm having a difficult time vizualizing what the nylon zip-ties are used for. To "permanently" attach the sending unit? any pics? Is there an illustrated "How to" with these extra steps? Thanks.

You don't need to change the whole fuel sensor, just the metal arm that unclips :idea:

No messing with more pins and zip ties :wink:

dgeist · **Posted:** Fri Aug 08, 2008 1:00 pm

Joe Romas wrote:

SBosco wrote:

Oh, okay. That's not bad. I'm having a difficult time vizualizing what the nylon zip-ties are used for. To "permanently" attach the sending unit? any pics? Is there an illustrated "How to" with these extra steps? Thanks.

You don't need to change the whole fuel sensor, just the metal arm that unclips :idea:

No messing with more pins and zip ties :wink:

X2. Before and after fuel readings confirm that as well.

SBosco · **Posted:** Fri Aug 08, 2008 2:18 pm

dgeist wrote:

Joe Romas wrote:

SBosco wrote:

Oh, okay. That's not bad. I'm having a difficult time vizualizing what the nylon zip-ties are used for. To "permanently" attach the sending unit? any pics? Is there an illustrated "How to" with these extra steps? Thanks.

You don't need to change the whole fuel sensor, just the metal arm that unclips :idea:

No messing with more pins and zip ties :wink:

X2. Before and after fuel readings confirm that as well.

Ahh, perfect. I like shortcuts!!!

msilbernagel · **Posted:** Fri Aug 08, 2008 4:42 pm

Actually, it's even easier to fix the fuel gauge matter. Don't move the sending unit, just snap the old and new floats off the sending unit and exchange them. They seem made to be replaceable, it took me all of 30 seconds. Somewhere in the whole thread, within the past month, I posted links to pictures of the process. Took an afternoon, including wiring harness work.

Mark

bugnout wrote:

SBosco wrote:

Drewd wrote:

I like the Kennedy inline fuel pump. It won't impede fuel flow if it fails, it doesn't require dropping the fuel tank, and no worries about my gas guage being off. It also is hooked to the wiring so it won't run more than 25 seconds before engine start, etc..

I was planning on doing the lift pump in the near future, but would like to know all the facts and options first.
The Cummins lift pump causes the fuel gauge to be off? Details please?

When I installed my lift pump, no one had figured out that the fuel float arm is slightly different on the Cummins unit. This caused the fuel gauge to read low. Now its known. All you have to do is change the sending unit on the stock unit for the one on the Cummins unit. its a single connector and couple of nylon tie straps.

The Cummins in-tank lift pump will pass fuel even if the fuse is pulled or blown.

aandlwoods · **Joined:** Mon Jun 09, 2008 4:53 pm **Posts:** 96

I thought i was ready for a lift pump and Racor but i bought the Racor first and not the lift pump. Now all my fuel problems are gone.... for now.

I'm ready for a lift pump....

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