Question about 2002 Ford Expedition
Now this vehicle has a fairly loud grinding and crunching noise emitting from the right front wheel area.
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: Front right side is making
Could either be a bad vacuum line or the TSB for the IWE solenoid.
If you have the truck running in park ( parking brake, chock wheels, necessary safety precautions ) check the vacuum on the front right IWE vacuum line. there are 2 vacuum hoses on there, 1 is the vac, the other is the vent, which routes up into the engine compartment, and is not hooked to anything.
Usually if it is the TSB, both sides will be making the grinding noise, as they are a common IWE solenoid
TSB : http://my.voyager.net/~sscully/file_tsb06_08_15.pdf
Operationally vacuum holds the IWE ( Integrated Wheel Ends ) out, and once vacuum is removed the spring engages the IWE.
Block diagram of the IWE vacuum system
Posted on Jun 20, 2011
I think yours has the automatic locking hubs that slide over the the rotor hub. If this is the case than what has probably happened is a u-joint has gone bad and wiped out that auto hub.
Be prepared for some sticker shock on those hubs. they are not cheap. The usual fix for this is to replace the front axle ujoints and what ever hub is making the noise, hopefully just one.
Posted on Feb 14, 2012
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