hi my name is chris , i have an 02 24v cummins with 55k on it.. original motor ... a few weeks ago i went off roading in some pretty serious stuff shortly after i had a serious loss of power . i immediately thought it was my lift pump and i was right so i installed the air dog fuel system my fuel pressure is right at 15 psi , problem is i still dont have the power i did b4 ? my turbo is building boost and the wastegate is not stuck opened or closed , my inner cooler does not have a hole in it. im new to all of this so any information would help thanks

 

please dont put your truck in the woods or the mud with that low of miles. its so hard to find an unmolested cummins.

what is pressure at WOT?
are your boost #'s the same?
were you playing in a bunch of mud? maybe plugged some intake stuff up?
any excess smoke?
your were off roading, maybe you had some FUNK in the fuel filter that got unlodged?

we need more specific symptoms???

 

i dont have a boost gauge so i do not know , but it was some really nasty mudd and i cleaned the air box the air filter made sure all that was ok , i changed the fuel filter and i got no result from that , the loss of pwer is not noticeable untill about 2000 rpms , and i can tell my turbo is not as loud as it was b4 . im just really stumped on this right now

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also it idles fine . but for some reason it seems like my turbo is not spooling up like it should i checked my wastegate and it seemed to be working right , could it be a boost gauge sensors ? or a tps ?

 

boost leak? you need gauges in the worst way. check all the intercooler pipes for ripps or loose fittings. sounds like your getting some but not all of the boost??? does it smoke a bunch more after 2000rpms then it did prior to the mud hole?

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it idles fine because it is getting the right amount of fuel to air. NO boost. i think you have a boost leak.

 

no smoke change , and i did check the intercooler all seemed to be ok , if i have a boost leak where would it be leaking ?

 

alot of places are possible. i cant answer that. you need to get a boost gauge and a fuel pressure gauge on the thing. you could be starving the vp44 pump out after 2000 rpms?? you gotta know what the thing is doing. any other symptoms? and fill out your sig if you would. makes it easier for us to guess some problems with your truck.

any oil in the intake? maybe you over spun the turbo? bearing wear possibly? take the air filter off and give the turbin a few good wiggles in each direction. up down is ok but in out is bad (that is very vague)

 

ok im going to try and get one put on and ill get back to you ,

 

Welcome to the site

 

 

i have not figured out my problem yet . i called a cummins mechanic in buffalo ny , i will be dropping my truck off there tomorrow night so hopefully i will have my answer this week sometime