Calling all diesel guys!

JDMopar said
I was wondering the same thing? My Dodge diesel is an 04, which should be about the same as the OP's truck. Isn't the lift pump for those up at the engine, right at the fuel filter? I read that somewhere, but may have misunderstood what the writer meant. Mine is bone stock with 125K miles on it, and never a seconds trouble.

tjpatte said
Yep, the lift pump trucks are up at the fuel filter and have to pull fuel from the tank. Later they shifted to in tank pumps that pushed to the fuel filter.

I pulled apart my lift pumps that failed and they all had the same problem. The vanes that slid out during rotation to pull the fuel would wear and get cocked in the pump hub that spun them. You would first see pressure fluctuations, then eventually they would wear so much that they wouldn’t extend anymore and catch the fuel.

normally, yes they are up on the engine from the factory.

HOWEVER, in some cases, there were some that got an in tank pump. There was no rhyme or reason really. Started in late 2000 thru about 06. It was completely random, I think it was done namely as a trial to see if they lasted longer than the original design.

also, if you had a Vp44 go out and be replaced under warranty, at one point, there was a service bulletin requiring warranty replacements to swap the sending unit for one with an intank pump. This is how my current 99 got an intake pump. There’s actually 5 different sending unit/pump/no pump combinations.