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FTO....so whats your thoughts on capping the system though? Seems with the CV's spinning full time efficiency goes way down, and mileage too..

Sam...curious if you got this fixed?... see this link (also attached)..pretty helpful to understand the issue: https://4wheeldriveguide.com/wp-content/uploads/2020/05/Ford-F150-IWE-grinding-noise-replacement-service-bulliton.pdf Not sure what year you have, but this vacuum 4x4 system has been...

So did you ever get a fix for this? I have a 2019 F-150, been in the shop 5x's for this, the last one after a 4x4 fail where the dash flashed "4x4 Temporarily Disabled". Had grinding in the left front hub area when it failed. Clearly the IWE/Actuator or something in the hub isn't right. Fords...