24 Valve 2nd Gen Dodge Cummins 98.5-02 Discussion of 24 Valve 5.9 Liter Dodge Cummins Diesels with VP44 Injection Pumps
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fuel pump problems

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Old May 23, 2009 | 05:23 PM
  #1  
kpcoupe's Avatar
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From: arkansas
Default fuel pump problems

ok i will try and explane this the best i can! so over the last few month everyonce in a while my fuel pressure would just drop to zero well of course i would imidatly shut the truck off and pull over and try to figure out what was going on well i would turn the key on and could hear the after market carter fuel pump kick on and build pressure so i would start it and usually i wouldn't have any problems for a week or two. well now i start my truck it might make it one minute before total fuel pressure loss if i let it set i can go out and turn the key and the fuel pump kicks right on but again once i start it it sounds great for about a minute then of course it goes off. i am lost any one know what is going on?????
 
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Old May 23, 2009 | 06:00 PM
  #2  
turbo20psi's Avatar
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First I would check the voltage and connections on the pump and relay that supplys power to the pump. Next ckeck your fuel filter, you may want to check the gauge or sender . Start simple with this , and then start thinking about a new pump I hope this helps. Even a loose or rusted connection could be a problem. Use a good volt meter like fluke for your readings, look on the pump or the paper work to see operation voltage range, if any pump drops below that range it will cause problems.
 

Last edited by turbo20psi; May 23, 2009 at 06:10 PM.
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Old May 23, 2009 | 07:19 PM
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Diesel Dawgs Performance's Avatar
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That what my carter would do right before it took a dump. Time for an upgraded pump.
 
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Old May 23, 2009 | 08:59 PM
  #4  
redneck_cummins's Avatar
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From: Abingdon, Va
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Time to upgrade to a airdog, fass, or mitusa I myself have the airdog 100 never see more than 19psi at idle and no lower than 15psi wot
 
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Old May 23, 2009 | 11:50 PM
  #5  
kpcoupe's Avatar
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why do i lose power to the pump if the fuel pump is going out?
 
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Old May 24, 2009 | 01:57 AM
  #6  
Uncle Bubba's Avatar
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When they are goin bad they tend to be erratic on when they work and don't work. That's why a guage is so important so you can see this happening. The Carters are horrible at best for these trucks and worthless as soon as you increase HP at all.
 
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