5.9 Liter CR Dodge Cummins 03-07 Discussion of 5.9 Liter Dodge Cummins Diesels with Common Rail Injection

IF THE LIFT PUMP GOES OUT DO YOU PUT ONE IN THE TANK?

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Old 04-10-2010, 04:06 AM
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Default IF THE LIFT PUMP GOES OUT DO YOU PUT ONE IN THE TANK?

STILL UNDER WARRANTY AND THE LIFT PUMP QUITS AND DODGE I HEAR LIKES TO INSTALL THE NEW ONE IN THE TANK? IS THIS GOOD OR SHOULD ASK FOR THE OLD KIND?OR CAN YOU?
 
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Old 04-10-2010, 04:48 AM
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Get an Air Dog
 
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Old 04-10-2010, 06:21 AM
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check it out man

https://www.dieselbombers.com/5-9l-24v-bombs-aftermarket/2104-intank-pump-run-dont-walk.html

 

Last edited by DB Admin; 04-10-2010 at 01:39 PM.
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Old 04-10-2010, 06:34 AM
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Whit, link isn't working
 
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Old 04-10-2010, 06:51 AM
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yeah whit
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Old 04-10-2010, 08:13 AM
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The in-tank upgrade is a fine/reliable solution for a stock to moderately modded truck. It also leaves open options for other compatible fuel supply mods, should you desire or need those at some point.
 
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Old 04-10-2010, 09:49 AM
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Fuel tank pump is the ONLY one the dealer will put in. The pump mounted on the back of the fuel filter is a discontinued item. If you plan on keeping your truck mostly stock, the in-tank one works fine... and it's free! But if you ever plan on modding your ride, just spend the $500 bucks now and get an Air Dog. The Air Dog-100 will support 500+ horsepower and doesn't require you to drop the fuel tank to install a "draw straw". If you go with the factory replacement in-tank pump and decide later down the road you want to upgrade the lift pump, you'll have to drop the tank and install a draw straw no matter which aftermarket pump you choose, as the in-tank pump won't allow fuel to be pulled through it.
 
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Old 04-10-2010, 09:53 AM
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Originally Posted by dieseldude03
If you go with the factory replacement in-tank pump and decide later down the road you want to upgrade the lift pump, you'll have to drop the tank and install a draw straw no matter which aftermarket pump you choose, as the in-tank pump won't allow fuel to be pulled through it.
That is absolutely false.

Flow-thru pump was a primary consideration going to the in-tank design. That's why the filter mounted pumps were killing the VP44s. The CP3s lasted longer in the early commonrails and would typically refuse to restart after a LP failure. The later 04.5 and up commonrails can run with a failed LP, although this is not guaranteed and sometimes the CP3 wil not pull enough fuel on it's own to restart, probably depending on fuel level in the tank.
 

Last edited by NadirPoint; 04-10-2010 at 10:11 AM.
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Old 04-10-2010, 01:25 PM
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Originally Posted by NadirPoint
That is absolutely false.

Flow-thru pump was a primary consideration going to the in-tank design. That's why the filter mounted pumps were killing the VP44s. The CP3s lasted longer in the early commonrails and would typically refuse to restart after a LP failure. The later 04.5 and up commonrails can run with a failed LP, although this is not guaranteed and sometimes the CP3 wil not pull enough fuel on it's own to restart, probably depending on fuel level in the tank.
Bit of bad info there, if the in-tank completely shuts down the CP3 can't pull enough fuel thru it to run, same as the cannister mounted ones. Many, many, testimonies to that fact.

Primary consideration for the in-tank was life expectancy. With the pump in the tank and cooled by fuel its much more reliable and longer living. These pumps are much more reliable than the cannister mount and will work for moderate HP increases.

In-tank pump is the only one available at the dealer, Genos garage is carrying a replacement pump for the canniste rmounts at a reasonable price. If you have any power upgrades planned opt for an AD or FASS and modify the fuel cannister.
 
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Old 04-10-2010, 01:36 PM
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Originally Posted by cerberus60
Bit of bad info there, if the in-tank completely shuts down the CP3 can't pull enough fuel thru it to run, same as the cannister mounted ones. Many, many, testimonies to that fact.
I take it you haven't seen one running with the LP disconnected? I have. Red font above would be the bad information here. The only thing they have in common is they are electric. Literally every other possible design aspect of the two 3rd gen LPs is different.

Originally Posted by cerberus60
Primary consideration for the in-tank was life expectancy. With the pump in the tank and cooled by fuel its much more reliable and longer living. These pumps are much more reliable than the cannister mount and will work for moderate HP increases.
I said "a" primary consideration. What you mentioned is the other "obvious" consideration.
 

Last edited by NadirPoint; 04-10-2010 at 01:47 PM.
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