Lift pump going out? - please help - Diesel Truck Forum -
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post #1 of 8 (permalink) Old 05-02-2008, 03:45 AM Thread Starter
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Lift pump going out? - please help

I just got my K&N cold air intake installed and took it for a quick run down the road.

I have a BD low fuel pressure light installed. When I hit the fuel the the light came on. I did notice that it did blink when I started the truck. It was only coming on when I was at 40 and smashed the pedal to the floor. The light should come on after if the fuel pressure is 5 psi or lower. If I was doing a casual roll on it would not come on. September of last year I put in a new Lift pump and injection pump. I checked the codes and there are no codes.

Please give me some advice. Thank you. New lift pump?
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post #2 of 8 (permalink) Old 05-02-2008, 06:48 AM
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sounds like it's on it's way out.. Do yourself a favor and spend the cash to start on an airdog or simialr pump. I went holley blue and my first one died just under a year of use. It's something with the electronics on mine. I took it apart and cleaned it like instructions stated and no change it wont spin unless I hit it with the rubber mallet. at 120 a pop a year you pay for a lifetime pump pretty quick

01 quad cab 4x4, edge drag comp, 4" exhaust, fass 150, 250 ddps, Jefferson State compounds 683hp so vp 11.91. AMSOIL front to rear. now back to stock 95 fummins in the works
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post #3 of 8 (permalink) Old 05-02-2008, 03:27 PM
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Originally Posted by hdnaqha
I have a BD low fuel pressure light installed. The light should come on after if the fuel pressure is 5 psi or lower.
Not good enough... That is too late pump damage is already done...


You need a fuel pressure gauge a low pressure light at 10 PSI not 5 PSI...

So you VP44 is already taking a beating...

Air Dog 150 is the way to go it worth every penny... Talk to GOS performance they are a sponsor on the site here!

My write up...

Michael Nelson - 2002 Dodge Cummins & 1996 Dodge Ram 5.9L Gasser
116K Miles On My VP44 - 4 Years of 2 Cycle Oil Diet! - Mixed at 128:1 Ratio - 25.3 MPG maxed out!
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post #4 of 8 (permalink) Old 05-04-2008, 03:51 AM
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how recent is your fuel filter change? i was have the same problem and changed my filter and my light has'nt came on sense
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post #5 of 8 (permalink) Old 05-04-2008, 05:15 AM
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do the air dog or fass fuel bypass system... and totally get rid of this
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post #6 of 8 (permalink) Old 05-05-2008, 07:20 PM
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You definatley need to get a lift pump, and that's even if yours is good. You can replace the fuel filter and see what happens, depending on were the sensor was located it can also indicate restricted fuel filter.

Contact 1-800-620-4467
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post #7 of 8 (permalink) Old 05-05-2008, 11:27 PM
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i just installed the raptor 150 pump and it works great i have 18psi and it dont pull it down at bit at WOT, but dont make the mistake i did , if your truck has the in tank lift pump, but a draw straw kit or your be there all night trying to get it to run and it wont

97 f 250 xlt 4 inch lift, 36/15.50 tires, hypermax kit with sledghammer turbo, swamps 355mm injectors, compitition fuel system,bdp stealth pumps oil system, head studs, custom 4 inch exhaust, edge evo and ez stack
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post #8 of 8 (permalink) Old 05-06-2008, 12:49 AM
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You cant go wrong with either a Fass or Airdog. I personally prefer the FASS.
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