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Old 06-30-2021, 03:08 PM   #1
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2006 Dodge Ram 2500 5.9 turbo diesel shuts off while driving

Hi Everyone,

After we setup in our site in Las Vegas, NV we were driving just the truck and the engine shut off on us. Since then when trying to restart is will not turn over right way and have to give it some gas to get it started.

I've seen a number of posts on the internet about this and it has been pretty inconclusive with the cause.

My question/concern for this group is if I should still try to pull my 39' Avalanche 5th wheel when we are ready to go?

Thanks Everyone,
Regards
John O
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Old 06-30-2021, 06:32 PM   #2
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You didn't mention a CEL , ( Check Engine Light ) so I'll assume no active codes.

Delay in cranking over and having to apply throttle to get to start .

When the engine does crank over , does the cranking speed sound normal ?

First thing to do is have both batteries load tested , and make sure all connections on both batteries are clean and tight .
Cummins ECM will do weird things if supply voltage drops below 10 volts during cranking.

Last thing you need is to stall in Vegas traffic with your 5er in tow . See if nearest parts store will rent you a scan tool , to check for any stored codes in the ECM.
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Old 06-30-2021, 08:50 PM   #3
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I have a 2003 3500 with a 5.9. I had an issue similar to yours. It was the injector fuel pump mounted on the side of the engine.

It stalled on me while driving. Started back up but would only idle a bit then stall. I could push on the accelerator but out would not stay running in gear.

You may want to check the codes to see what error codes you are getting.
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Old 06-30-2021, 09:21 PM   #4
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As suggested.........go to auto parts store and have the OBD codes read

Auto Zone does it for free so I would think completion stores would also

Only takes a few minutes to check the codes.
Pen/Paper in hand so you can write them down...internet search for what code means

Could very well be the CP3 High pressure injection pump
Info about issues
https://xlmechanicalservice.ca/techn...lure-symptoms/


Truck alone stalling...do you really what it stalling out with trailer connected??????
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Old 07-02-2021, 06:34 PM   #5
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I should have asked in my first post.

Do you have any type of chip or non stock tuner equipment on your truck ?

This type of equipment can cause issues with the vehicle's HPCR fuel system , buy causing the manual safety fuel pressure relief valve to fail , and not allowing prober fuel pressure to the electronic fuel injectors .

The manual pressure relief valve , if failed or leaking , will cause stalling and loss of power and sometimes low fuel pressure codes .
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Old 07-02-2021, 07:59 PM   #6
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My guess is the lift pump failing, which is rather common due to the engine heat.
There is a different thread on this same topic here somewhere.
Unlike the larger Cummins engines, the B engine lift pump runs continually when engine is running.
I seem to remember the lift pump has a filter screen inside that get stopped up. Then there is the issue of old flexible fuel lines to/from the lift pump to steel fuel lines along the frame, they appear fine but the inside lining deteriorates with age and collapses shutting off the fuel flow.
Also there is a check valve in the fuel line to prevent fuel from backflowing to the tank. There is no fuel return line to my knowledge.

That's all my old memory can recall tonight.
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Old 07-02-2021, 08:12 PM   #7
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Quote:
Originally Posted by Ray,IN View Post
My guess is the lift pump failing, which is rather common due to the engine heat.
There is a different thread on this same topic here somewhere.
Unlike the larger Cummins engines, the B engine lift pump runs continually when engine is running.
I seem to remember the lift pump has a filter screen inside that get stopped up. Then there is the issue of old flexible fuel lines to/from the lift pump to steel fuel lines along the frame, they appear fine but the inside lining deteriorates with age and collapses shutting off the fuel flow.
Also there is a check valve in the fuel line to prevent fuel from backflowing to the tank. There is no fuel return line to my knowledge.

That's all my old memory can recall tonight.
Since 2005 Lift pump was relocated to inside the fuel tank so it pushed fuel and not exposed to heat from engine
Return line from CP3 Injection pump goes back to fuel tank
OP has a 2006 Dodge
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Old 07-03-2021, 07:14 AM   #8
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Quote:
Originally Posted by Old-Biscuit View Post
Since 2005 Lift pump was relocated to inside the fuel tank so it pushed fuel and not exposed to heat from engine
Return line from CP3 Injection pump goes back to fuel tank
OP has a 2006 Dodge
Thanks for bringing me up to speed Byron. His reference to a 5.9 engine was misleading for me.
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