For all the Dodge mechanics out there. (The Sequel)

[Ghost Hunter]

Ok, got me thinking

Dampner pully bad

Engine mounts bad (i know they said otherwise but still)

Transmission mount bad

Bad injector/s

Cold weather start feature on

From here it gets spendy

I think your on the right track.

[dyhardhuntr]

So it idles fine but shakes the whole truck? Is there any vibration felt in the clutch pedal? If the vibration dampener has a rubber band in it I would make sure it is not coming out in any location. If it idles fine I would check for vibration in the clutch pedal which could be a bad clutch or I’ve also seen a broken crankshaft. Mostly on caterpillar though. Possible motor mounts. I’ve never heard of cold weather mode cutting out cylinders. The ecm usually increases the rpm to around 1,000 to increase engine temp. Is there any smoke from the tailpipe?


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[KFhunter]

Once enabled, idle speed will slowly ramp up from 800 rpm to 1200 rpm when all of the following conditions are met:

1. Intake Manifold Temperature less than 0°C (32°F) and,
2. Coolant Temp is less than 60°C (140°F) and,
3. The Transmission is in Neutral or Park and,
4. The Service Brake pedal is not depressed and,
5. Throttle = 0% and,
6. Vehicle Speed = 0 mph

Additionally, if Intake Manifold Temperature (IMT) is less than -9°C (15°F), and all of the parameters above are met, three of the cylinders will be shut off upon reaching 1200 rpm, creating a slight change in engine sound which is normal. This allows the engine to create increased heat in the cooling system, allowing more rapid engine warm up and cab heating.

Both features will automatically disable when one of the following occurs:

1. The Automatic Transmission is placed in gear (forward or reverse) or,
2. The Service Brake pedal is depressed or,
3. Throttle position is greater than 0% or,
4. Vehicle Speed is greater than 0 mph or,
5. Coolant Temperature is greater than 79°C (175°F).

Engine speed will return to normal operation at 800 rpm. If the engine continues to idle and coolant temperature is at or below 60°C (140°'F), the feature will reenable. In order to operate properly, the Accelerator Pedal Position Sensor (APPS) must stay at idle.


Prolly not it, but was thinking a coolant or intake temp sensor out

[Boss .300 winmag]

Once enabled, idle speed will slowly ramp up from 800 rpm to 1200 rpm when all of the following conditions are met:

1. Intake Manifold Temperature less than 0°C (32°F) and,
2. Coolant Temp is less than 60°C (140°F) and,
3. The Transmission is in Neutral or Park and,
4. The Service Brake pedal is not depressed and,
5. Throttle = 0% and,
6. Vehicle Speed = 0 mph

Additionally, if Intake Manifold Temperature (IMT) is less than -9°C (15°F), and all of the parameters above are met, three of the cylinders will be shut off upon reaching 1200 rpm, creating a slight change in engine sound which is normal. This allows the engine to create increased heat in the cooling system, allowing more rapid engine warm up and cab heating.

Both features will automatically disable when one of the following occurs:

1. The Automatic Transmission is placed in gear (forward or reverse) or,
2. The Service Brake pedal is depressed or,
3. Throttle position is greater than 0% or,
4. Vehicle Speed is greater than 0 mph or,
5. Coolant Temperature is greater than 79°C (175°F).

Engine speed will return to normal operation at 800 rpm. If the engine continues to idle and coolant temperature is at or below 60°C (140°'F), the feature will reenable. In order to operate properly, the Accelerator Pedal Position Sensor (APPS) must stay at idle.


Prolly not it, but was thinking a coolant or intake temp sensor out

I think you would get a code if a sensor was out.

[KFhunter]

Prolly, my dodges are older

[Ghost Hunter]

So it idles fine but shakes the whole truck? Is there any vibration felt in the clutch pedal? If the vibration dampener has a rubber band in it I would make sure it is not coming out in any location. If it idles fine I would check for vibration in the clutch pedal which could be a bad clutch or I’ve also seen a broken crankshaft. Mostly on caterpillar though. Possible motor mounts. I’ve never heard of cold weather mode cutting out cylinders. The ecm usually increases the rpm to around 1,000 to increase engine temp. Is there any smoke from the tailpipe?

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Manual tranny.  I watch the hood and dash shake at idle.  Like watching a Harley.  No vibration felt in clutch pedal.  No smoke.  Motor mounts and dampener check OK.  Usually have exhaust brake on starting.  Warms up quicker.  Doesn't change if on or off.  Crank has been on my mind.

[dyhardhuntr]

Has fuel psi been checked? I believe that year has a common rail system. Maybe check the fuel lines and rail for leaks. A little bit of fuzz around a fuel line can cause air to get in. This stuff is hard to diagnose without seeing/hearing the issue. Can be frustrating though. I had a 6.0 Ford and fought it forever.


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[KFhunter]

did they check the fan clutch?

rail pressure?

fuel return line?

FCA?  fuel control actuator?

[Boss .300 winmag]

did they check the fan clutch?

rail pressure?

fuel return line?

FCA?  fuel control actuator?

Fan clutch will throw a code.

[KFhunter]

Bah!  you and your codes!@!     



    

[Ghost Hunter]

12/7/2010. Letter from Chrysler informing that ECM extended to lifetime coverage for 2004-2005 2500/3500 5.9L. 
We are extending warranty period on your ECM because it may fail to accurately report diagnostic system information. 

Not sure if this is part of the problem in diagnostic issues.  Lifetime means as long as parts available? 

[Boss .300 winmag]

Bah!  you and your codes!@!     



    

🤣

Mine threw the code for the fan clutch, replaced code went bye bye.😉

[Joyce]

I experienced additional vibration at idle when the pilot bearing was failing in my Cummins 

[Ghost Hunter]

 dyhardhuntr:  "I would check for vibration in the clutch pedal which could be a bad clutch or I’ve also seen a broken crankshaft." 
Joyce:  "I experienced additional vibration at idle when the pilot bearing was failing in my Cummins"    Anything unique about your flywheel?

These two, I hope, are very close.  I had said earlier, there is no vibration in the clutch pedal.  Monday, hopefully, will confirm the solution.  And I will have learned something new.
Friday the transmission was removed.  Mechanic said the clutch looked in good shape for 200,000 miles.

[dyhardhuntr]

That is strange that you cannot pull any codes from it. I wonder if the diagnostic tool will communicate with the ecm or there are just no codes not even history codes in the ecm. I do know that dodge only allows certain pids to be read in the scan tool if it is an aftermarket one. The ecm is supplied by Chrysler and is not a product of Cummins. Hopefully the place you have taken it will not charge you for all of the time required to hunt down this issue.


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