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 Mileage question

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Old Dec 7, 2009 | 12:10 PM
  #31  
Diesel Dawgs Performance's Avatar
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200's or 250's
 
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Old Dec 7, 2009 | 03:23 PM
  #32  
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well i cleaned my sensors today so we will see what happens. Thanks guys for all your help ill keep ya updated to see if thats what it was.
 
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Old Dec 12, 2009 | 06:19 PM
  #33  
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well i cleaned my map and iat sensors and still no difference in milage, still between 14-15. so what should my next step be? gettin the injectors checked out? or could it be something else. before my exhaust and quad adr i was getting over 16 consitantly and even touched into the 17 mpg range a few times.......
 
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Old Dec 12, 2009 | 07:20 PM
  #34  
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yea but still you should be running at least 18-19 stock with what you have you should be at 20 no less but i have no idea maybe it is your injectors any body eles wanna chime in here
 
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Old Dec 12, 2009 | 07:53 PM
  #35  
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i would have the pressure checked like stated earlier in the post... they may be running diff, PSI
 
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Old Dec 12, 2009 | 08:19 PM
  #36  
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Ya you could have a bad lift pump.
 
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Old Dec 13, 2009 | 11:35 AM
  #37  
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thanks guys! Luke what fp should i be seein with the BD Diesel replacement lp? i see about 10 at idle and 6.5-7 at wot
 
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Old Dec 14, 2009 | 12:37 PM
  #38  
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I seam to get beter milege when im on setting 5 then max milege. Have you updated the program at all?
 
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Old Dec 14, 2009 | 12:40 PM
  #39  
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no i havent, what program do you have loaded? 1000, 2000, 3000, comp, dyno, or torq? im assuming mine is 1000 cause i just put it on when i got it and didnt do anything with it. Should i try loading a different tune or reloading the 1000. Also i was wondering if maybe my IAT sensor could be bad? i cleaned it but if it is bad then that wouldnt do much of anything. the truck runs like a champ so idk
 
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Old Mar 14, 2012 | 07:42 PM
  #40  
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it seems I get better mileage with my ADR on about level 5 or 6 and driving it fairly easy, im at about 19.4 right now and thats on level 7
 
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