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

[Ghost Hunter]

Diagnose, best guess?  2005 Dodge Ram 2500, Cummins, manual trans, 4WD.  Runs fine, no power issues.  Shifts good, drives good.  Sitting at idle, shakes like a Harley.  No shaking or vibration while driving.  Where would you start?  Sorry, no diagnostic communication with computer.

[Weatherby92]

I'm not a mechanic in the least. I would check engine mounts. I'm sure someone more knowledgeable will chime in here soon. Good luck.

[Fastass350]

You can pull the stored codes with 3 key cycles, if you didn’t know. It’ll give you a basic place to start.3 cycles, starting with the key off, ending with the key on, within 10 seconds, and you’ll start seeing codes where the odometer is, starting with the letter P. Have a pen and paper ready, then google is your friend. Mines done that at times when it’s battery voltage is low from a bad terminal end but who knows. Holler if I can help at all.

[Ghost Hunter]

I'm not a mechanic in the least. I would check engine mounts. I'm sure someone more knowledgeable will chime in here soon. Good luck.

That was one of my first thoughts.  Mounts are in good shape.

[Mudman]

Injector could be worn.  Nozzles spray pattern due to erosion of tip.  Possible.. ?

[Ghost Hunter]

Injector could be worn.  Nozzles spray pattern due to erosion of tip.  Possible.. ?

My thoughts too, I'm no mechanic.  Injectors checked/tested and ruled out.

[huntnnw]

I have the same truck in a auto and does the same thing . 287k and still has power like new.

[Ghost Hunter]

I have the same truck in a auto and does the same thing . 287k and still has power like new.

Hood shake, dash shake?  Normal for it, or how long?  Ever look into it?

[Boss .300 winmag]

🤔

[MR5x5]

Check your filters and belts? Cleaned the MAF?

[KFhunter]

Could it be a cold weather warmup feature of the ECM cutting out half tbe cylinders?

Try a reflash and get rid of it, don't need it.

Do you have a cold weather package?

[Ghost Hunter]

Guess I don't feel so bad about my mechanics scratching their heads. 

[Boss .300 winmag]

Have you checked your codes like fastass suggested?

I have an 04 and have never glass that situation.🤔

[Ghost Hunter]

Have you checked your codes like fastass suggested?

I have an 04 and have never glass that situation.🤔

It's at the dealer.  They say they couldn't pull any codes.  Might try it when/if I get it back.    Past time to forget about computer diagnostics, and go old school. 

By they way, a new injector harness didn't change anything either.  But keep the ideas coming.   

I do have the Jacobs exhaust brake that was dealer installed at 10,000 miles.

[KFhunter]

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