2022 RAM Cummins 6.7L 3500 - Engine Issues?

[RogueDiesel]

So, going to work this morning, it was extremely cold.

While driving to work, I got a DPF warning to see a dealer and a service warning.

My fuel rail pressure was 5 psi, and my IAT was 950 degrees, according to my Edge monitor.

The truck is completely stock for now.

It still has a warranty.

As soon as it started spitting and sputtering, I cut it off and got it towed to the dealership.

They can’t see it until next weds.

Does anyone have any idea what the issue is?

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[AK Bob]

It's really hard to say without any trouble codes.

The Edge readings are very strange.

If the rail pressure were 5 psi, the engine would not start or run.

If it were the lift pump pressure, that would be more realistic.

The intake air temperature reading was extremely high at 950*F, which could be a stuck open EGR valve or a stuck on grid heater.

The only thing that makes any sense is the DPF warning.

You have peeked my curiosity.

Please keep us posted.

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[RogueDiesel]

Yeah, I find it strange and confusing.

The trouble code was low fuel rail pressure.

It still drove somewhat, LOL.

I just shut it down and got it towed to be safe.


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[CrazyTrain]

Yeah, I find it strange and confusing.

The trouble code was low fuel rail pressure.

It still drove somewhat, LOL.

I just shut it down and got it towed to be safe.


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Whenever I notice something different when it is extremely cold, I always suspect fuel first, especially treatments or the lack thereof.

My 01 was very bitchy yesterday at -10, but after warmup comes around.

I treat the heck outta my fuel.

1 gel up 35 years ago was enough for me.

I don’t know about the other stuff you’re experiencing, but I suspect fuel first.

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[CrazyTrain]

How cold was extremely cold?

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[RogueDiesel]

-30/-25.

I use Hotshot for my fuel treatment.


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[RogueDiesel]

I never went crazy in the cold.

The only difference was I had it plugged in this time.

I usually don’t have to plug it in.

Usually, a trooper starts in the cold.

It's kind of odd that I actually plugged in the truck, and this happens, LOL.


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[CrazyTrain]

I never went crazy in the cold.

The only difference was I had it plugged in this time.

I usually don’t have to plug it in.

Usually, a trooper starts in the cold.

It's kind of odd that I actually plugged in the truck, and this happens, LOL.


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Are there any aftermarket fuel filters in the Windstream without a heater?

That is downright frosty temps!

Also, what dose are you using?

I use Hotshot, but go with max dose.

Also, my edge tuner has shown erroneous readings when really hot or really cold.

I know you said had it towed, just brainstorming on my past experiences.

I might even wonder about batteries at that temp.

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[RogueDiesel]

I also do the max dose.

The truck is complete stock.

Waiting for the warranty to finally end.

I already have a long list, LOL, but it’s completely stock.


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[CrazyTrain]

I am really, really curious and perplexed, at this point.

How many miles?

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