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Re: 2006 dodge 5.9 cummins
RPS rail pressure sensor.. it checks fuel pressure before the injector pump start going when you fire up the vehicle..
on the fuel rail, there is a sensor that is on top of fuel rail or at end..
it has a quick connect with 3 pins/wires red/black/green
did you get any codes when you turn ignition on/off/on/off/on dont turn motor.. i didnt know about this trick til i started having problems and someone posted.
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