Rattle with RP Fluctuation

Rattle with RP Fluctuation

07-01-2008, 02:03 AM

#1 (permalink)

Erik@LCD

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Join Date: Nov 2007 Location: Livermore, CA Posts: 127

Rattle with RP Fluctuation

Looking for some help here, this is one we haven't seen before.
Have an 04.5 manual truck that has a cyclic rattle at idle. Every 7 seconds or so, it has what sounds like an injector or lifter rattle. Hooked up to the scan tool, this sound corresponds to a change from 5500psi (ish..normal idle pressure) to a spike of 10-13kpsi. I suspect the noise is the injectors rattling or a return valve rattling. The cause is the question.

I am leaning to the FCA as the cause. Any thoughts or similar experiences?

Thanks!

__________________
Erik Lind
2004, 2wd, SRW. Lowered,Smarty,SuperBSpecial, CFM+,S&B,5"Magnaflow,X-Monitor, Mag-Hytec, Flux's, LCD Grid Delete, FASS, Goerend,Custom Trac Bars
630 on Fuel/755 GhettoFogged 12.73@108.8mph
erik@leftcoastdiesel.com
www.leftcoastdiesel.com
www.norcaldieselforum.com

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