Mine has recently started doing this also... it is not the Death Wobble that other speak aobut just what feels like front or truck is hopping like on a wavy road. It is there at exactly 46 MPh... but goes away at higher and lower speeds and i have noticed it does not occur at all on concrete paved roads.. strange. Will be digging into it this weekend to see if i can isolate where it is coming from. I have some worn body mounts, and maybe some shocks that need replacing (70K on those)... but have new tires with only 10K miles. Will let you know if i find anything that corrects it.
1 - 8 of 8 Posts
Agree with you .. very small window that this happens in.. Also if i accel hard or aggressive it doesnt appear to do it, or i just pass that 46MPH window to fast. I replaced all my shocks last night. (put on Rancho RS9000Xls) and althought the front shocks were warn out (old units were monroe reflex)... it did not cure the bounce i am feeling. Although the truck deff rides better over bumps 
.. So those needed to be done reguardless. Next up is the front axle rebuilt... found the drivers side hub bearing is worn, and inner axle seal is leaking on driver side. Was going to Body mounts first, but have to shift focus based on what i found with the hub. Also , i ruled out carrier bearing by putting one of those in (old one worn\torn). and one final note.. when i place it in 4WD.. it doesnt do it... so that is leading me to the front end\driveline causing it. The hunt continues.
.. So those needed to be done reguardless. Next up is the front axle rebuilt... found the drivers side hub bearing is worn, and inner axle seal is leaking on driver side. Was going to Body mounts first, but have to shift focus based on what i found with the hub. Also , i ruled out carrier bearing by putting one of those in (old one worn\torn). and one final note.. when i place it in 4WD.. it doesnt do it... so that is leading me to the front end\driveline causing it. The hunt continues.
Well the hunt is still on.. this weekend i replaced, Both Hub assys, removed axles and replaced both axle shaft ujoints (since it was apart) also replaced big seals on the axles that get distroyed when you remove the axles, Replaced all 4 Ball joints. and also dropped the front diff and replaced the inner axles seals along with the new version of the outer Axle seals. Took about 8 hours to complete (had all the right tools.. and i recommed this hub seal tool to anyone doing this job OTC-6697). It seats the seal on the axle shaft but also seats the seal in the hub to the right depth during reassembly.. but i digress... after all that work was completed.. my bounce is still there. Front End is MUCH tighter and the work needed to be done.. but bummed it didnt cure my issue. Now i am focusing on Tires or Drive shafts .. So simply going to remove each drive shaft and road test.. and see how things change. Tires are new (6K on them).. so will hit a local place and have them Road Forced Balanced.
1 - 8 of 8 Posts
