This is a Quick and simple Test.
You will need one of these Vacuum Hand Pump and a pice of vacuum line the correct size. I have and old IWE line.
Start with either IWE. Remove the hose It is Here
After removing the line/hose use the vacuum pump to pull 20-25 InHg of vacuum.
Let this Sit 10...
front axel spining
frontdiffnoisefront driveshaft spining
grinding noise
iwe
iwe delete
iwe replasement
low speed grinding
noise in the front end
transfer case
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