I have a 2005 F250 that I did a very small lift on a few years ago. It makes an odd noise and has some vibration when I'm accelerating from a stop, usually only for a few seconds, then it goes away. It almost sounds like something is rubbing on the drivetrain, but I've gone under there and checked numerous times, and I don't see anything close.
I do run a tune most of the time, but that's probably not related.
It has a 2 1/2 inch Icon lift, and I run one size larger tires on the stock rims.
I've done a bunch of searches, but haven't found anything conclusive. I've read things about ball joints, u-joints, bearings, etc. What is interesting is that I read a question asking if it only happens when it's in 2WD, and it does. If I lock the hubs and put it in 4WD (I have a manual transaxle), it doesn't make the noise.
I'm not sure if things are slightly out of whack due to the increased angle of the driveshaft(s), if maybe a bearing is out, or what, and I'm hesitant to bring it in anywhere because they will probably charge me out the arse and not fix the problem. I usually do my own work, but for something like this don't even know where to start.
Has anyone experienced this or have any ideas? I don't want it to turn into something serious.
Thanks for looking.