Engine/Transmission (1998.5 - 2002) (Fuel System) Draining the fuel tank

[Jim Fulmer]

In an attempt to drain and drop the fuel tank on a 24V is there anyway to jumper the relay for the lift pump and jump pump it out?



I asked the question for someone else as the truck is not here at my house, as you may well know my 24V knowledge is lacking just a tad but if there is a relay a guy should be able to jumper a hot wire to the power wire for the pump and let it do the work!



Thanks, Jim

 

[GKarpen]

The lift pump voltage/power is obtained from the ECM. On mine, I hooked up a 20A remote lift pump relay. The wires from the lift pump are used to power the relay and then I obtained the power for the lift pump directly from my battery connections. With this setup, it takes the load off of the ECM and you can jumper across relay contacts #30 and #87 to run the lift pump when you have the need. Works great.

 

[Jim Fulmer]

Thanks, looks like he has it figured out how to do it now after your post!



Jim