PhilW55
Junior Member
I have 2004.5 cummins and it had not had the in-tank lift pump "upgrade", still has the lift pump attached to the filter canister. My fuel level sending unit has been going bad for a while and had not crapped out entirely (was reading low too early and I could only put in 17-20 gal of fuel at 1/4 tank). Now it reads completely empty. Since I have to drop tank to install the level sending unit just wondering if I should do the in-tank lift pump at same time. Or just do the sending unit and install a FASS or other higher performance (external) lift pump.