Engine/Transmission (1998.5 - 2002) lift pump going out???

[NDornacher]

so starting last week my truck would lag out on take off and seemed low on power so i put a fuel psi gage on and it has been reading about 7. 5 psi idle 3. 5-4. 0 psi at about 2500 rpm so new lift pump needed? so my real question is what should i go with ?

a fass style system or a oem\after market pump?

so lets start some arguments:-{}

thanks Nathan.

 

[John - K5AWO]

Personally, go with the frame mount kit from Geno's Garage and move the lift pump back by the tank. I am still using the OEM style pump and it is doing just fine as I do not intend to join the HP race. My pump holds 15-17 psi at idle, 13-15 crusing and 10. 5-12 pushing it hard. I have a guage and a warning light that triggers at 5 psi so if it dies, I will know it real fast. Since it is on the frame rail, I can change it out in a heart beat. I have two OEM pumps under the seat that I came by for free, so can't get enthused about spending bux with anything else.

If and when all three of those pumps are toast, I have a brand new Holly Blue pump that I can throw on the frame rail. The FASS pumps are really nice and I can't knock them, they are good and will keep the foam out if you should develop any.

A side note on foam in the fuel. Today I was transfering some diesel from a barrel to my son's truck (we swapped while he fixes mine) with the Holley pump and using clear tubing. The first barrel I started with was about 25% motor oil and 75% diesel and thicker than straight diesel. The suction line was full and no bubbles. The discharge line was foaming if the pump was held with the in/out ports horizontal. If I held the pump with the ports vertical and the out port on top, no foam. Curious, I moved the suction line over to my 2nd tank of spare fuel which is 100% diesel. No foam regardless of port orientation. So, the lesson is, if the suction cannot meet the needs of the lift pump, the pump will cavitate and put foam into your VP44. That of course, even at a full 15 psi will spell death to the vp44.

So, to answer your question. If you do not want to take any chances with the pump cavitating, I would go with the FASS system to preclude that. You only spend the bux once that way.

 

[LCink]

Lift Pump Relocation Kit

So this kit will allow me to move my lift pump from the motor down to the frame rail by the fuel tank. Can i run a pusher pump in front of the oem lift pump or am i just creating more problems?

 

[DNewell]

so starting last week my truck would lag out on take off and seemed low on power so i put a fuel psi gage on and it has been reading about 7. 5 psi idle 3. 5-4. 0 psi at about 2500 rpm so new lift pump needed? so my real question is what should i go with ?

a fass style system or a oem\after market pump?

so lets start some arguments:-{}

thanks Nathan.

Here's my $. 02:

When my LP crapped out, I had no problems whatsoever with the power from the truck. Essentially the VP-44 should be able to pull enough fuel with a stock set-up to supply the motor with enough fuel. It's not good for the long haul, but it can be run with no FP from the LP. I would highly recommend having your VP44 checked as this could be a potential problem, or possibly a TPS, but I'm not an expert. With as much stuff as you're running on the motor(hop ups), I would recommend an aftermarket pump. I've heard a mixed bag on the FASS. I personally think that it's a lot of hype. I've heard good things about the Glacier Diesel set-up. it uses a frame mounted Wal-Bro pump and is supposed to work very well. I'm waiting for my stock LP to crap out again and then it's getting completely replaced with the Glacier Diesel set-up. The kit runs around $300-$350, and is very simple.

 

[CJNielson]

Sure it is the LP?

ELaslo posted fuel pressure question thread, and as it turns out the LP is fine. Of course if you are looking to upgrade anyway. Either way, if you do upgrade, might as well put a larger line in the tank than what is stock. Gives you an excuse to check out the tank and see if there could be clogging issues.

 

[BTowler]

Ditch the factory lp for a good aftermarket setup, they are all reliable, choose based on your plans and wallet.