18 T4R Limited Vibration

Matto2786

New member
Want to see if anyone else has had this issue. I have been trying to find the answer to this for months. I have a Limited with approx 76k miles on it, which I bought in Sept of 2021. Shortly after purchase, I noticed a subtle vibration in the floorboard, gas pedal, and center of the steering wheel only when accelerating. When I coast at any speed, it goes away completely. The harder I accelerate, the more pronounced the vibration becomes, but it is not audible. The best way to describe it is like a phone vibrating in your pocket. Some days, the vibration is more noticeable than others. I’ve had the transmission drained and filled twice in the last year. I have had the fluids in the diffs and transfer case changed. I have had the driveshaft lubricated. Engine and cabin air filters are clean. I just had the spark plugs changed, and had the fuel injection system cleaned. I’ve had the tires balanced 4-5 times and two alignments done since July. Vibrations usually start around 2k rpm. When I rev the engine in neutral or park, I notice the vibrations, but not until closer to 3k rpm. Three different shops in the last year say that they can’t find anything wrong. A buddy of mine says that it just might be the extra components of the AWD system that I’m feeling, but I feel if that was the case, there would be dozens of threads on this. Again, the vibration is subtle and I’m sure a lot of people would just live with it, but I’m convinced there is something off that is causing this. Any help would be appreciated.
 
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I have same year and model as your truck. Same story, alignments from several shops, road force balance from three shops, rotate tires several times, replace lower control arm bushings. You can see the list goes on, I still havent found a solution. Maybe it is the Full-Time 4WD system...

I did have a torque steer problem, that was fixed with a good alignment. Matching caster helped tremendously.

Next on my list are probably, replace lower control arms or front passenger axle, this is the side where I feel most my vibrations.
 

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