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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running rough missing when I get off the highway

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  #1  
Old 07-28-2009, 01:18 PM
luke46's Avatar
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Default running rough missing when I get off the highway

Fixed most of my problems no codes now cleaned my map sensor. Current problem is it is now running rough when I get off the highway. If I'm just firing it up or putting around the property it runs fine. But as soon as it gets to idling after getting off the highway it has a miss. If I bump up the rpm a little it seems to go away and if I shut it down and fire it back up after a few seconds it runs better. My plans are for an air dog because they sound great and my pickup seems to be broke about half way down. I just keep a full tank lately but I have about another week and a half before I can afford it. Fuel pressure is 14-15psi at idle 10-11 at wot.
One more weird thing I was looking for my block number last night and all I could find was about 6 letters and numbers where they say it is but at least none of them were 53 together.
 
  #2  
Old 08-30-2009, 07:26 PM
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are your injectors clean?? and how bout the fuel lines... one of them may be all most clooged all they way.. allowing just alittle fuel to go through
 
  #3  
Old 08-30-2009, 07:48 PM
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i would say what Wisconsin redneck said...check your fuel lines, fittings, injectors, shoot even check the fuel filter too, do u remember when the last time u changed the filter?
 
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Old 08-30-2009, 10:27 PM
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new airdog 150 new lines filters runs great as long as the idle is bumped up around 950 havent got into the injectors yet should be checking them in the next couple weeks when I adjust my valves
 
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Old 09-03-2009, 06:22 PM
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hows she running??? ny updates????
 
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Old 09-04-2009, 08:03 AM
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well it still runs rough after i drive it down the highway if the rpm is below about 950 but since I installed the airdog and turned up the rpm it's been running fine. So I'm just leaving it there for now. I'm hoping to adjust the valves in a week and a half and take a look under there see if that helps and take a look at the injectors.
 
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