I am in need of a new lift pump just found out the guy that done the work on my tranny also replaced the Injector pump but not the Lift pump that probably caused the pump. Also would this be what makes my truck idle up and down when I start. Thanks Again

 

PN 4090046 is the campaign lp $65 from your cummins dealer . PN3990105 is the stock lp $156 from cummins . Id get the campaign pump. I here its the same, maybe beter and less dough$$

Idle up and down at start might be the warm up cycle

 

How do you know the lift pump is bad?

 

The fuel pressure is low

 

What type of pressures are you seeing? Did you perform a volume test?

 

You were right How did I know it was the lift pump is was a bad line What type of line should run from tank to pump Also if I want to upgrade my lift

 

The idle up and down is probably the grid heater cycling on and off. It puts a big load on the alternater and slows the engine down a little.

 

Go with a vulcan kit and pump relocation. Or you could get a glacier diesel lift pump and line kit.

 

If you want to stay with 3/8" lines, go with the Geno's relocation kit. I found a campaign pump but it crapped out at 30k. Then I went with the Aeromotive 11203. Runs 16psi at idle, 12-13 at 65 and WOT never below 8. Have 25k on it with no problems at all. You can find it at speed shops or Summitt Racing.
Just my 2 cents
Q

 

Thats Right Yarddog.
But replacing the crap that dodge put on there could not hurt

 

Get a glacier lift pump and be done with it!

 

Right on Bro!!!

 

I gonna go head and put the glacier pump Thanks

 

Aeromotive 11203 did it just plug right in to the OEM plug or would I be better off getting the pump from cummins?