Noticed oil dripping from front crank seal after doing about 300 miles of highway driving. The oil was spread back covering transmission pan from wind.
Could this be the source of this engine vibration at idle or the other way around, or did the engine vibration cause the seal to go bad? I've read about getting grooves on the crank and fixing with a sleeve kit.
Did notice oil buildup on steering components so must have been leaking for awhile now.

 

Oil leak is likely a separate issue.

You stated you think the balancer was replaced? Is it the right one for the 5.9?

has fuel sync been checked?

 

The balancer doesn't look like it's been exposed to the elements for very long,but thats only a guess. It is the correct one, the 5.9 has a cut out about 6 in along the outer edge that makes it look wobbly even when it's not, the 5.2 balancer is solid all the way around according to pics posted by DH on some older posts.
Fuel sync is my next move, just hadn't found the time yet. Prime time in construction season.
Another issue, the fuel pump is making a nasty high pitched noise. If fuel pressure was on the low end could it cause a lean misfire at idle and not when driving?

The plug tips are always white as can be. My other truck they were tannish after a couple thousand miles.
Going to make time and take it to the dealer this week. Will post results so hopefully will help someone else down the road.

 

Your plugs should be a light tan color. White indicates either overheating, or a lean condition. Have you tested fuel pressure??

 

Fuel pressure was on the low side but just within specs at last shop it was looked at. I checked once with an auto parts rental gauge and was 47 to 48psi. Pretty beat up gauge.
Temp gauge is always 1/8 in below the 210 mark.

 

That's close enough.

Tried unplugging the front O2 sensor? (Long thread, I don't remember everything that has been done. )

 

Yes tried unplugging the recently replaced 02 sensor to see if any change,none. got new cat and muffler, new plugs and wires, cap and rotor,and new fan clutch last week that was really dragging. Going in to Dodge dealer early tomorrow for screaming fuel pump and leaky front crank seal. Told them I wanted to get fuel synch checked, only reason having them do the other routine work. Time will tell!

 

Got screaming fuel pump replaced and front crank seal for a small fortune at dealership and asked them to specifically to check fuel synch and whatever else their DRB3 scan tool can do. Told them the excessive vibration is worse after reaching operating temp. Everything is working like it should, was the diagnosis. That's pretty normal for these old trucks the service boy said. Even the little jerk,jerks at idle with brakes lightly applied.
How stupid do i look,c'mon! because my other 3 rams never did this at 82,000 miles. Of course they didn't charge me for hooking up the scan. So end of thread. Live with the stumble at every red light. I am so frustrated! Thanks to all for the suggestions along the way.

 

I bet they didn't.

Dealers are notorious for not servicing our trucks properly in hopes of us buying new ****.

 

Right after Thanksgiving we went into the deep freeze. I've noticed that the slight stumble at idle isn't as noticeable. So ambient temperature is affecting whatever is causing the uneven vibrations. If that gives anybody a clue. I would think if it had cracked valve seats that it would be more noticeable when cold, as metal shrinks when cold.