Cracked IWE
Thread Starter
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Joined: May 2011
Posts: 81
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From: MA
Ok, meanwhile unplug the vacuum line that goes from the engine to the IWE solenoid on the firewall. Cap off the engine side. That will (should) fully engage the hubs, no matter if you are in 2WD or 4WD. It won't hurt anything but fuel economy to run this way. If the grinding goes away, then you know you have a vacuum problem somewhere between the engine and one or both IWEs. If the grinding persists, make sure each IWE is bolted to the steering knuckle properly. Make sure the axle end nut was installed and torqued to 20 in-lbs. After that, I'd suspect the hubs as being bad.
Sheep Dog
Joined: Nov 2012
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I'm not where I can look at mine right now, so I don't know if they are flexible enough to seal off by pinching them with something.
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Joined: May 2011
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From: MA
jaxwireman
Joined: Sep 2012
Posts: 265
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From: Jacksonville,Fl.
I just pulled the vacum line off the solenoid and tied it to the line going to the vacum box to apply vacum to the IWE'S. Lets you no if those lines are holding vacum or not. You can get a vacum pressure tester at Harbor Freight if one is near you.
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Joined: May 2011
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From: MA
I know where the solenoid is I was having trouble tracing the line back to the engine. I found this method of bypassing the solenoid on another forum. The picture I attached above is my understanding of how the solenoid is supposed to be bypassed. Where on the engine does the vacuum line go to?
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Joined: May 2011
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From: MA