HammaMan
Well-known member
Quite surprised they just didn't install the locked hubs they started putting on 22+ AWD trucks. They failed too often so ford just made everything forward of the TC fully connected.My truck is currently in for an IWE replacement on the front left. 3rd time is the charm apparently as I had it in twice before and they couldn’t recreate the grinding noise. I spoke to the tech about the new IWE system and he said they have electric solenoid on them but it is still vacuum that engages them, at least on my 3.5 EB. I believe the old system had the vacuum keeping the IWE’s disengaged. I did see the post about that line being just a breather but I have not personally verified that on my own truck. Just an fyi my front pinion seal is being replaced also as I noticed oil on the crossmember under the front diff, may be worth a check on your own trucks.
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