Drone noise around 70 mph - Ford Powerstroke Diesel Forum
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post #1 of 1 Old 10-22-2011, 08:48 PM Thread Starter
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Drone noise around 70 mph

I installed a 4" rough country lift about 2 or 3 months ago. didnt do the shim kit till last month and i just replaced all my u joints and carrier bearing and this "drone" started about a month ago. it rides fine with a slight vibration (which i think is the tires) but when you roll into the throttle and get to 75-and on it got a bad humming/droning noise. its not my exhaust system i know that nor is it the tires. u joints all look good but i cant figure this out. it only does it around those speeds and gets louder the faster you get. and i might mention you can feel it in the seat and in the petal when it does it. also it will do it every time. i cant tell if the shim kit is causing it or if its the axle or what. its driving me nuts being that i have replaced the u joints and carrier bearing

2009 Ford F-350 FX4 4x4, H&S 300HD, MBRP 5" DP back exhaust, S&B intake, sinister egr delete, 4" BDS lift with fox shocks, 20x12 fuel nutz, 37" toyos, Custom painted headlights by me

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