I have a 04 305/555 truck, it still has the factory lift pump on the filter housing... I recently got a new (in box) in tank lift pump replacement kit handed to me...

My factory lift pump has never given me any problems but I really can't be sure that it has enough pressure to supply my set-up (Ramifier, smarty usually on lvl 5)... I don't have a FP gauge on the truck (really don't want any more gauges to look at), I plan on putting a warning light on but haven't yet...

So here is the question, would you swap the filter lift pump for the in tank pump? Would you leave the current set-up alone until it craps out? Would you install the kit and run both pumps?

Maybe down the road (but no time soon) I will install an aftermarket set-up so I plan on keeping all the parts but I am not considering this an option at this time (need a tranny first)...

 

I didn't see my response so I will post it here. I would go with a Raptor 100 or AirDog 100 if you want better filtration. In tank pumps work good on stock and slightly modified trucks and that is about it.

 

Mine made it (stock firewall mounted) until 128,000 miles. Although, when it went, it went suddenly and completely.

 

IMO, get a FP gauge. Leave the stock pump alone until you replace it with an aftermarket pump or the stocker goes out.....whichever comes first.

I'd start saving money now for an aftermarket pump (I like the GDP walbro w/2 micron kit) and replace it as soon as you can. The stocker will almost certainly eventually go out.....so it would be better to do the replacement at a time and place of your choosing.

I just think it is a waste of time to install the intank pump.....for the work involved. Go aftermarket. You need the fuel supply anyway with your power goodies.

..

 

Like everyone else has said go with an aftermarket unit, either FASS, Power Flow or Glacier.

MikeyB

 

My stock pump died at about 67,000 miles. It was inconvenient and the dealer slapped in a stock filter mounted unit. Within 10,000 miles I changed it to a Glacier Walbro setup and it has never missed a beat with about 150,000 miles now on the clock.

I took apart the new stock one that had less than 10,000 miles on it and found that the brushes in the motor were about half worn out already!

With the Walbro pump you can easily change it if it fails, right alongside the road if necessary, and I carry a cheapo electric pump in a new package just in case.

Meanwhile, I have been able to fill my tank with over 39 gallons of fuel and never had a pickup problem or and air problem.

Just get the Walbro and be done with it.

By the way, running both pumps (in tank and stock) is a bad idea because the filter mounted pump can or will block the like when it fails.

 

I agree with the main consensus, don't go in tank unless you don't want more power or the dealer retro installs it under warranty, because putting it in-tank will make things more complicated once you decide to change. The beauty of the 03-04.5s is how easy6 an aftermarket fuel system can be installed on them, an AD100 doesn't require you to even drop the tank. Sell the kit, use the money towards an AD100 or Raptor 100.