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Wolfganghd's avatar
Wolfganghd
Explorer
Sep 11, 2014

300 HP Cummins shuts down

2006 Damon Astoria, Freightliner chassis 300 HP Cummins, with 35000 miles on it been no problem . Last month when started it. idled for about 1 min then shut down did this couple time then stared ok and drove home stopping and starting it a few time. Sat in the yard for home for a week went to start it...just shut down and it is now doing it all the time now....will not idled more then a min then shut down, can't even drive to have service. ???
Class A
  • Wolfganghd's avatar
    Wolfganghd
    Explorer
    Oct 30, 2014
    Well all it was the transfer pump , and it's located hind the cpu cooling plate on the engine......
  • islandvagabonds's avatar
    islandvagabonds
    Explorer
    Sep 13, 2014
    If not the filters check the oil pressure sensor. I had similar symptoms on my C7 Cat. Turned out to be a faulty sensor. You will need a technician that has the Cummins diagnostic program on the computer to tell you which sensor is faulty.
  • dakdave's avatar
    dakdave
    Explorer
    Sep 12, 2014
    on my 300 hp cummins if i turn key on with fuel water seperator off lift pump will push fuel out .If u get fuel it is not lift pump.If fuel pressure low check engine lite should come on,al least it did on mine.
  • Wolfganghd's avatar
    Wolfganghd
    Explorer
    Sep 12, 2014
    Ok found the Racor RAI-025 will get a new one..so I'll do all fuel filter first...will let all know how it goes.....
  • journey_indiana's avatar
    journey_indiana
    Explorer
    Sep 12, 2014
    You also have a fuel strainer before the filter. It is located inside the passenger side frame rail, just in front of the rear axle. (Racor RAI-025 RAC10) It can also cause problems with fuel delivery.
    Good Luck,
    Journey Indiana
  • ScottG's avatar
    ScottG
    Nomad
    Sep 12, 2014
    The LP is the best guess but you have a number of other sensors and protection devices that can cause issues. Hope it's simple though!

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