5.9L 12V Performance Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps Related to Performance and Longevity

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Old May 7, 2010 | 11:02 PM
  #1  
lodal cummins's Avatar
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From: portland oregon
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so i just installed my 75hp stage 2 injectors today. truck idles real low around 600rpm. is it normal for idle to go down? seems like it should be high with larger injectors. going to bump the idle up in the morning. or do i need to give the gov. springs another click. i set them at .050 thanks!!!!
 
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Old May 8, 2010 | 12:53 AM
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94 12valve's Avatar
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From: Pylesville, Maryland
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whos injectors did you buy?

did you install the gov springs with the injectors or before?
 
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Old May 8, 2010 | 07:28 PM
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lodal cummins's Avatar
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they are ddp and the springs i put in about 5 months ago. strange thing is the truck runs really great with the new injectors but in o/d around 50 to 60 i get this weird virbration now like some thing is out of balance. like the motor is lugging and makes the cab shake a little. not in any other gears just o/d. not sure if it is a little wheel hopp in the back end. i think i will replace the back shocks as they are the original ones. did not do this before the new sticks. i hope that could be it with the added rwhp
 
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Old May 8, 2010 | 07:39 PM
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no it sounds like clutch chatter from the t/c or the overdrive unit
 
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Old May 8, 2010 | 07:57 PM
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lodal cummins's Avatar
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so if that is the case are the 75hp sticks too much for the tranny? they said it was good for about 450hp. what is the next step to fix this problem? i guess time to save for a converter.

---AutoMerged DoublePost---

i really hope that is not whats going on. the tranny only has 26,000 miles on it just dropped the pan and only a finger swipe of debris on the pan magnet.
 

Last edited by lodal cummins; May 8, 2010 at 07:57 PM. Reason: Automerged Doublepost
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