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One of the IWEs on my wife's truck started making noise again tonight. This is the third time in four years it's acted up and I'm tired of replacing solenoids and check valves as they go bad so I disconnected the iwe solenoid on the firewall.
Trying to decide if I should leave the front end locked in full-time or fix the vacuum leak again. Truck has a 2" leveling kit so I'm wondering if the extra angle the half shafts are at will cause some issues if they are spinning all the time.
I have over two hundred thousand miles between three trucks with leveling kits installed without any parts failures but the shafts were only spinning when 4wd was engaged.
I’d just plug the vacuum lines. Cut them about 1/2” or so above the hub and them plug them to keep moisture and dust out. Plug the other side of the vacuum line too, so that the pump wont constantly run and burn out.
The angle of the shafts should be a non issue for the hubs. The CVs may be stressed, but I don’t think 2” is enough to cause an issue.
Next time mine act up, I’ll plug them and order some RCV IWE eliminators.
The Vacuum pump. The turbo engine wont create enough vacuum for the brakes. The IWE uses vacuum as well. Reserve vacuum is also kept in a small plastic tank. Without plugging the ends that go to the hubs, the system will want to keep drawing vacuum and therefore, running the pump as the system will see it as a leak.
This how Ford does it now. They recommend removing the vacuum lines, then putting the plugs on the nipples on the hubs, and at the source of vacuum for the lines that were removed. Same idea, just a cleaner way of doing it.
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