grinding in the 4X4 system
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Elder User
Joined: Apr 2008
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From: south shore massachusetts
grinding in the 4X4 system
I saw this posted elsewhere and thought it was important enough and easy enough to fix to post here...
If any of you don't want the same problem of the grinding in the 04 -06 4x4 go to your local dealer and buy a new "redesigned" vacuum solenoid. My truck started making the same noise as seems like hundreds of others. This is caused by the old solenoid ingesting water and it getting into the 4wd vacuum system. The water can cause the IWE to try and engage 4x4 while in 2wd. This can cause damage to the hubs also. So if you own a truck between these years look on the passenger side firewall at the vacuum solenoid (could also be called an IWE solenoid) and if it does not have a Square plastic protective cover it could ingest water and cause damage. I bought the new part for $23 and put it on in about 10 minutes. The damage has already been done to mine but this could save people who haven't had the problem alot of money in the long run. Oh yeah it is easier to get to the part if you take the battery cover off.
The bottom of the box should say CX-2117, followed by the part # 6L3Z-9E441-A.
Its an IWE solenoid located on the firewall behind the battery part
# 6L3Z-9E441-A updated part has a plastic mounting brackett that covers the top, old stye is mounted on a metal brackett. Make sure to disconnect the lines at the hubs and blow out any moisture ( lines between iwe solenoid and hubs) and also use a vacume pump if you have one and vacume the hubs to remove any moisture thats present
# 6L3Z-9E441-A updated part has a plastic mounting brackett that covers the top, old stye is mounted on a metal brackett. Make sure to disconnect the lines at the hubs and blow out any moisture ( lines between iwe solenoid and hubs) and also use a vacume pump if you have one and vacume the hubs to remove any moisture thats present
