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Help! Truck has humming noise/vibration from front end
I just installed a 6" lift on my 2005 Supercrew 4x4 and now the front end starts humming when I get over 45mph. I already re-clocked the front driveshaft but that didnt seem to help. The u-joints are still in good shape and not loose. I took the front driveshaft out and the noise stopped. Can anyone give me any ideas of what to check or look for? PLEASE...
I don't know what your noise is! but on my truck I hade a noise - vibration above 45 after my 6" lift also. The shop re-timed my frt drive shaft with no change also. I found that there was a vac leak causing the frt hubs to engage. once that was fixed I was good.
Vac needs to be on when in two wheel drive. no vacum in 4x4
I have been messing with this same problem in my 2003.. I have change Front hub bearings , shocks, CV axles , Checked vac Lines, I even checked the U joints the best I could... I have 4 conclusions left .. U joints have seized up, Transmission probs due to coolant leaking into trans from a bad radiator detreating the fluid, rear end bearings or the infamous out of round or un balaced tire...
Well I know its not the u-joints, and I also know its not the tires because I haven't even put my 35's on yet. Like I said, the humming/vibration will stop if I take out my front driveshaft. I talked to a buddy and he told me that I need to have my driveshaft rebuilt and put a CV joint on the back side of it, but when I called and talked to the manufacturer of my lift the tech told me there is no way I should have to do that.
It seems to me that the first thing I need to check is the vacuum lines. Any other suggestions???