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-   -   2002 Dodge Ram 2500 Diesel (http://www.ramforumz.com/showthread.php?t=39045)

Jayden07 05-14-2009 12:57 AM

2002 Dodge Ram 2500 Diesel
 
I have a 02 dodge diesel and it idles up and down when driving does anyone have any suggestions I have done had it to five different shops and replaced alot of parts that they thought was wrong and it still does it thanks

beglin 05-17-2009 02:36 AM

has anybody checked the lift pump pressure and volume? these trucks run fine with a failed lift pump till someone runs it out of fuel then it rears its ugly head because it will never fully self prime and the high pressure pump is now straining to pull the fuel all the way from the tank through the dead lift pump.you need at least 17 p.s.i. feeding the high pressure pump.very common problem.another is the ground connector by the negative battery post,follow the cable you'll find it.clean it good.I'm not talking about the battery terminals,this is a big ass connector!check all the grounds you can find.second guess would be t.p.s. glitch but I'm just guessing here cause I can't scan it and there's no codes right?.....happy huntin'


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