Another Lift Pp failure

[David Oxland]

Lift pump just failed here on a 2004 with 30,000 miles;

Got replaced with an in tank type ; is that good or bad?

 

[Bekim]

Lift pump just failed here on a 2004 with 30,000 miles;
Got replaced with an in tank type ; is that good or bad?

Mine went at 34,000. They say in the tank pushes the fuel along instead of pulling it like the older setups. Pushing is supposed to be easier on the pump.
Personally it seems that the stock lift pump is just not cuttin it and needs to be upgraded. IMHO
Mike
###

 

[BrentKaiser]

Same story here. The new in-tank pump seems to be working great. I imagine they will have to do a recall sooner or later.

 

[pwr2tow]

Yes the in-tank lift pumps seem to working out great.



I doubt there will be a recall, It's cheaper just to replace the ones under warranty than to replace every lift pump from 98. 5-2004.

 

[AMassaro]

I had the in tank pump from the factory. You guys should seriously consider installing a fuel pressure guage even if you remain stock. I would see zero psi more times than I care to mention before I modded my fuel system... :--)

 

[chazj]

Yeah ... it's too bad the in tank pump doesn't develop more pressure!



Driving cross country now and the average fuel pressure at freeway speeds is only 2 to 21/2 PSI (lucky to get it up to 4 lbs at idle).



Don't have to worry about high EGT's because I have to back off the throttle to avoid a Zero PSI situation before I even hit 1000 degrees. Thank goodness I am not towing my trailer!



Lots of "Cummins Power" left but unfortunately not enough stock fuel pressure to feed the beast. Looks as thought I will have to break down and add an additional fuel pump when I get home... . More $$$... :-(

 

[steved]

I'm surprised that with the lower fuel pressure that more guys aren't seeing a slight decrease in fuel mileage too... When I installed my FASS, it was holding 25psi... fuel mileage was significantly improved and dropped slightly after getting the pressure down to around 10psi... I couldn't imagine the mileage if I could pull to 0psi... it seemed to have a directly relationship.



steved

 

[EB]

Over the weekend I put a BD Auxiliary fuel pump on my truck. Like AMassaro, I was seeing more 0 pressure readings after I put a fuel pressure gauge on than I was seeing positive readings, this was with the "new improved" in-tank mod. I tow daily and now know why I am on my third CP3 pump. After I put the Aux. pump on my fuel pressure is now 22 - 24 at idle, and 20 -21 pulling a heavily loaded trailer, the lowest I could get it was 18 going WOT through the gears. The truck seems to pull better and run smoother with a lot more fuel pressure than it did. This aux. pump will work with the in-tank pump in place, you don't have to remove it or disconnect it. Works for me.

 

[jnelson]

My advice to anyone with an 03-04. 5 I would by a new replacement pump at the local cummins dealer or performance shop. My in tank pump went out twice and then i got smart and put a FASS pump in.



If your on the road and your in tank pump goes - well you got to remove the tank to fix it. You can replace any external pump on the side of the raod if you have to.



my . 02

 

[BRayls]

My advice to anyone with an 03-04. 5 I would by a new replacement pump at the local cummins dealer or performance shop. My in tank pump went out twice and then i got smart and put a FASS pump in.



If your on the road and your in tank pump goes - well you got to remove the tank to fix it. You can replace any external pump on the side of the raod if you have to.



my . 02

my thoughts exactly

 

[chazj]

From a mileage standpoint I am averaging over 19 mpg (hand cal w/calculator) and that includes the trek on I-70 thru Colorado and speeds of 75 mph on the flat lands of Utah, Colorado and Nebraska. Still looking at the BD system when I get back to Nevada although with the pressures that are described here... I will have to buy a new Autometer Guage as my 15 #'er won't read high enough.