3rd Gen Engine and Drivetrain -> 2003-2007 5.9 liter Engine and drivetrain discussion only. PLEASE, NO HIGH PERFORMANCE DISCUSSION!

power loss

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Old Mar 13, 2011 | 04:42 PM
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nsd22002's Avatar
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From: tennessee
power loss

I have problem and need advice. When i am drivin down road i can feel truck start to lose a little power. Then a few seconds later pick back up. I can also sometimes take off from red light and it will lose power for split second then xcellerate. It doesnt do either one continuously. Some days does great then one day it happen. Any thoughts
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Old Mar 13, 2011 | 05:18 PM
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From: minnesota
have you tried changing the fuel filter? that would be my first guess.
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Old Mar 13, 2011 | 05:23 PM
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Changed few months ago. Still did it after filter change
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Old Mar 13, 2011 | 05:26 PM
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what year truck? do you notice it happening when the fuel level is below 1/3 of a tank?
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Old Mar 13, 2011 | 05:27 PM
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From: Star Meadows, MT
Tell us about your truck.

If it is pre-05, it might have a failing lift pump.
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Old Mar 13, 2011 | 05:29 PM
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Truck is 03. Not really sure level of fuel when it does it. Doin it today and has half tank.
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Old Mar 13, 2011 | 05:35 PM
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I had lift pump go out 4 yrs ago but it gave no warning. I recently had to put injectors on it. Put flux 2s on it but everything is stock. Has 175000
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