vibration at idle when at stop light

[juspassinthrough]

2005 dodge ram 3500 vibrates at idle seems if you put in gear gets better has 1.70000 on it one owner runs great good fuel mileage edge tuner on it since new this vibration you can feel in the seat also any ideas,, ALSO trans has never been messed with except flush fluids clean not burned i was wondering if i change tore converter and maybe updated valve body might head of a problem i tow a 16 thousand pound rv around the country. IDEAL ALSO THANKS

[Mopar1973Man]

How many miles on the injectors? Any longer starts? White smoke at startup?

[dripley]

Harmonic dampner maybe? You can look and see if rubber is starting go bad. It would wobbling a little while idling also. My 2nd gen had alignment marks on it but they were very hard to see.

[Mopar1973Man]

Droplet is right. Dampner will slip in rotation and later show up as a wobble. 

[dave110]

From Dripley to Droplet. Is that a promotion, demotion, or a lateral move 

[dripley]

6 hours ago, dave110 said:

From Dripley to Droplet. Is that a promotion, demotion, or a lateral move 

I choose lateral. I'll help him with one one day.

[Dieselfuture]

Could it be motor mounts or a tranny mount also