well i am getting a gas pedal vibration coming and going, i have been reading alot about driveshaft problems, i do have some play in the front driveshaft and wondering if thats cause some vibration from 55mph to 79 mph i see that they had alot of problems and issues with front and back driveshafts causing problems any input??The transfer case has some fluidic friction in 2WD mode that sends a tiny bit of torque to the front driveshaft, but as you found out, it's not much. Not a worry.
Did you do this experiment for curiosity, or are you suspicious of something else you see or hear?
98,000 miles, shocks have been replaced, just had it front end aligned, just got new tires on wednesday, new bearings and hubs both sides. do you know if there should be any play in the shaft? where it mounts to the transfer case.Many, many possible causes of vibration. How many miles? Have you ever had to replace suspension components like control arm bushings or tie rod ends? Are you on your original shocks? Have you freshly spin balanced your tires? Driveshaft vibration is way down the list of possibilities, but a driveline specialist might be able to help diagnose it for you faster with their tools.
