Lift pump help

[DrCotton76]

I got a 2000 5.9 24v I have a Fass lift pump under the bed by fuel tank . The stock life pump on block was disconnected and I bought an aftermarket lift pump to replace. Can I run both lift pumps??? If so how to I go about doing so???

 

[crash68]

If your already running FASS lift pump, why would you want to run a second one?
I doubt your making enough HP to warrant anything more than what that FASS lift pump can supply.

 

[DrCotton76]

Thanks for replying. My Fass I've had to rebuild twice. When u shut off the engine before it would prime for like 30secs continuously now it runs in like 3sec sperts for like 30secs and I have lose of power in higher gears.

 

[crash68]

You need to check if the FASS is losing voltage causing the pump to short cycle. Could be a bad ground or wiring connection.

 

[DrCotton76]

10/4 thanks for all the help is it a full 12V?