Shops, Barns, Varmints, and Trucks

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F 150 2009

Printed From: Unofficial Allis
Category: Other Topics
Forum Name: Shops, Barns, Varmints, and Trucks
Forum Description: anything you want to talk about except politics
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=159635
Printed Date: 21 Aug 2025 at 7:38am
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Topic: F 150 2009

Posted By: atucker
Subject: F 150 2009
Date Posted: 03 Apr 2019 at 11:58pm

Here is my problem I have a Grinding noise it started when in two wheel drive, put the truck in 4 high or 4 low the noise goes away. I pullled the 5 amp fuse in location 54 from the fuse box under the hood. the noise is now goen in 2 wheel drive and i still have 4 wheel drive Is it the 4x4 module going bad

Replies:

Posted By: Brian Jasper co. Ia
Date Posted: 04 Apr 2019 at 5:52pm

The IWEs (Integrated Wheel Ends) use engine vacuum to hold them in the released position. There is a vacuum check valve near the solenoid that controls the vacuum to the wheels in the vacuum line that's leaking. When engine vacuum drops like when under load climbing a hill, the hubs start to engage and the grinding sound you hear. The solenoid is located on the passenger side of the engine compartment near the hood hinge. The original design allowed water to get into the solenoid and freeze or rust it internally. The redesigned solenoid has a hood on it to keep the water out. You'll have to buy the vacuum supply line to get the new check valve.

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"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford

Posted By: steve(ill)
Date Posted: 04 Apr 2019 at 8:43pm

im with Brian, but a little more info.... The IWE ( wheel end) has a vacuum piston to engage and disengage the 4 x 4... years ago you could do it manually with HUB LOCKS... The problem is after 10 years the piston / O-rings can get sticky , dirty, hard grease and they can drag.......... might be the vacuum lines, might be the check valves as Brian said, and might be the wheel end itself...... if you stop the vacuum you will lock the 4 x 4 hubs in constantly... that might be what happened when you pulled the fuse.

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Like them all, but love the "B"s.

Posted By: steve(ill)
Date Posted: 04 Apr 2019 at 8:47pm

test procedure to figure out what is the problem......... I like this FORD site for info.

https://www.ford-trucks.com/forums/836438-everything-you-wanted-to-know-about-the-iwe-system-and-then-some.html" rel="nofollow - https://www.ford-trucks.com/forums/836438-everything-you-wanted-to-know-about-the-iwe-system-and-then-some.html

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Like them all, but love the "B"s.