Question about 2004 Dodge Ram 2500

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5.9 engine hesitates

2004 2500 dodge ram diesel 4x4. Driving along running great all of a sudden it misses or hesitates. sometimes once sometimes 5 times in a row. Had the low pressure fuel pump replaced. Had the crank shaft position sensor and camshaft position sensor changed but still does it. Sometimes it wont do it for days and other times it does it 50 times in a 200 mile trip. Truck has 78000 miles..thanks for any help in advance. Also the dealer has no clue

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  • brian calhoon
    brian calhoon May 11, 2010

    did they replace it with an in tank unit, or just put an old style back on it. can check lift pump volume. spec. is more than 440mL in 10 seconds. might have to do an injector return flow test also

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I have the same truck and same issue. it also seems like its "hunting" for the correct speed when the cruise is set about 70, it goes from 68 to 72 and back and forth. I have a good FAAS pump on it so Im getting pressure and volume to at least the lift pump. I heard there is a speed sensor or something on the engine that helps monitor the fuel flow or something, but I cant find anything on it. If you come up with something good, please let me know. Thanks, Steve
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Posted on Oct 08, 2010

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Could also be the apps

Posted on Jan 13, 2009

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