Archived 99 24V Changed Fuel Filter, No Prime, No Pressure

[WMurphy]

I just changed the fuel filter on my 1999 24V Cummins

I got in truck to prime, the 1st key switch for momentary crank I got 15psi on my transfer pump pressure gauge.

I realized I left water sensor unhooked on filter, reconnected

Now zero pressure at filter when I momentary crank

I have done momentary cranks numerous times

New batteries, FASS DDRP transfer pump is 10 months old and 15k miles

I need truck for work

I have 12v to fuel relay, I swapped a new relay in

no voltage at transfer pump using 12v test light

 

[WMurphy]

FASS DDRP Failed

The FASS DDRP transfer pump less than 1 year old, less than 15k miles failed.

Zero pressure, required inlet screen is clean

I should have left the original pump on the truck

If it ain't broke, don't fix it... ... ... ...

 

[Sticks]

OK, direct hotwire the pump. Either jumper the relay sockets (30 and 87) or direct hot wire the pump.

Where did you test voltage at the pump? Did you verify you had a good ground (test light was working when you tested at the pump)? I've tested circuits and the light worked at point A, moved to point B 2 feet away and no light because I lost ground for the test light.

It is possible that you did indeed use up the last 30 seconds of the pumps life when you primed the first time, but unlikely.

It should also be under warranty - don't sweat it.

 

[WMurphy]

Thanks for your response!!
I finally removed the DDRP pump and hooked it directly to a 12. 4VDC battery.
The pump ran, but no pressure, it would no even suck fuel of of a full 5 gallon container!
The inlet screen was clean.

 

[WMurphy]

OEM Pump replaced FASS Pump

I found the OEM Cummins transfer pump was more reliable than FASS DDRP pump.



To correct problem, I replaced FASS pump with an OEM pump

 

[DieselLady]

Oh, how sad is that. I can remember a day when you could count on these aftermarket pumps. I guess they are made in china now like everything else. "(

 

[Sticks]

It has to be something with the Dodge pickups. I have an 02 (?) Sterling tandem truck at work with the 5. 9 in it, and it appears to be the original OEM transfer pump mounted on the block, and it is still running strong (much to my disbelief).

I don't know if it is vibration, electrical noise, heat, or what, that is causing anything that is mounted to the block in the trucks to go TU sooner than it should.

 

[Missouri Mule]

Sticks the transfer pump is closer to the fuel tank on med duty trucks. My Moose (Freightliner) has the oringial pump on it with 193,000/14 years on it. Next time it goes in for service I will have them do fuel pressure test, last year or the year before it was at 13 psi at idle.



WMurphy, I've read that a plugged screen on the fuel supply line in the tank will cause early death to transfer pumps.