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Nov 14, 2018 | 07:03 PM

Ford333

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Joined: May 2014

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Front end

I put coil overs on now I get a humming noise if I put it in 4wd the noise goes away

Nov 14, 2018 | 11:40 PM

JustaV6

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Joined: Jun 2017

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check vacuum lines going to iwe's on each hub. likely one of them got bumped and you have an intermittent leak that is causing partial engagement of that iwe -> noise.

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