Join Date: Apr 2013
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Death wobble...I think?!?!?
Hey guys I am new around here. Been on the site a few months but havent posted anything. Just been doing alot of reading and research about these trucks.
Ok for starters let me tell you about my truck. I just purchased a 2005 f-250 4x4 crew cab with a fab tech 4.0 coilover 8" lift with the upgraded 2 fox shoxs front stablizers and has the 4 link front kit instead of the radius arms, also has 35" tires. The truck has a bunch of other stuff done to the motor and trans and chip and all that good stuff but I figured I would tell you more about the suspension as that is where I seem to be having a problem.
OK well at first after I bought the truck I just always noticed the truck was very touchy to input for steering once you got going about 40 mph or so. This isnt my first lifted truck, but is my first lifted ford diesel. I thought the steering had a little issue but maybe it was just how the ford trucks were. So I called up the guy I bought the truck from and he was telling me he had already replaced the hydrabooster and put moog ball joints in the truck and had the truck aligned about 2 months before selling the truck. So I figured that maybe that was just how the truck drove and went on my merry way.
Well about 2 weeks ago I noticed when getting up to freeway speeds about 55-60 mph the truck would shake like the tires might be out of balance and would even start to make the truck to go left and right and was very hard to control. So I took the truck home and started doing some research to see if anyone else had a problem and got a bunch of results...death wobble was the main thing that came up. So I went outside and did a couple checks on things. I checked if bolts were tight, I checked my tire pressure, and I dont know if I did it right but I checked the drag link bar. What I did was I took a 2-3' piece of metal pipe and stuck it between the axle and the drag link and kind of pride the drag link upwards. It seemed to have a little movement in it, but more so it was flex between the big shaft part on the drivers side of the drag link and the tie rod end of the drag link on the passenger side where the two of them come together with a coupler/sleeve. It would almost start to bend at that point or flex. What I also did was grab the drag link with my hand and twist it like a throttle on a dirtbike/streetbike. I dont know if the ball joints in the drag link are shot or not but I could get it to twist probably 1/3 of a turn to where the ball joints would max out and then turn back all the way the other way to max the ball joints in the other direction pretty easily. I would assume that the ball joints are either worn or almost totally shot.
Well I didnt happen to get to drive the truck for a week and a half and I took it for a little small trip and notice every time I would get to between 55-62 mph the truck would kinda shake and more so if I hit a bump around those speeds it would be worse. It also was extremely hard to handle. I would assume this is the death wobble alot of other people have had happen to them as well. Is the problem just the drag link? Could there be other problems? What about alignment, should I have the alignment re setup to a "certain spec"? I am a little lost right now. I dont want to just keep throwing money at the problem and not fix it. Its not my DD but I dont want to waste a ton of money on fixing it.
I was thinking about ordering one of the WC Motorsports drag link but it just seems a bit pricey. I was thinking about maybe having a good fab guy friend of mine make me one. Is it hard to do or should I just buy the real deal one? ANy ideas from you guys on what I should do or anything to really check to get this right? I dont want to drive the truck again until it is fixed. It was way to hairy to drive.
Thanks for any help guys and sorry for the long post.