TwizzleStix
Pudendum Inspector aka FORZDA 1
We'll see. The vacuum system failing is what destroys the IWE as it only half-way engages and grinds itself to death- so magnets might be the solution.
Actually, it doesn’t disengage fully, so it allows the moving hub to touch slightly (or more) the stationary hub causing the noise and eventual wear/destruction.
Although many blame the check valve, I’ve seen the solenoid itself cause the issue more often.
Ford included the awesome new transfer case with clutched automatic torque transfer in the Gen2+, so if you’re running in 2wd, it’s because you like to hear/smell the burning rubber of the rear tires.
I have nearing 80k miles on mine, E50, tuned, mid 12sec 1/4 mile, 140mph(+) top speed, all done in 4A. It’s the most durable way to go. The hubs never need to disengage unless…, well smoke and noise is desired.