Question about 2004 Ford F250
Front u joint turning in two wheel drive. took it and cranked wheel all the way to right. drove in circle and get a clunk and a grinding noise. metal on metal lifted truck off ground definatly in hubs on sure where to look from here. vacume? lines?
Is your battery light on the dash on? When my alternator died, my hubs were auto locking due to low voltage in the 4wd selector even though 2wd was selected. The problem corrected itself when I installed a new alternator.
Posted on Sep 12, 2013
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Posted on Jan 02, 2017
SOURCE: four wheel drive not engaging
Check the front wheel bearings for play and also while the wheel is off the ground lock the front hubs, grab the axle behind the wheel and see if it is engaged. If not then you will need to take the hub apart and find out what is broken.
Posted on May 29, 2009
I had the same thing happen. The automatic locking hubs are faulty, causing one or both hubs to try to engage or disengage onto the front driveshaft. This makes the clicking noise and loud clunking that you hear. You may notice your steering pulling to one side of the road,because one hub is locked in. Replace the automatic hubs with new ones, do not try to fix the old ones. I liked the
convience of automatic hubs but replaced mine with manual hubs, there just way more reliable.
Posted on Jun 06, 2009
if you slide under the truck and try moving the cv with your hands and there is any looseness in joint or noise the joint is indeed worn out, the cv joint if bad should not stop the truck from shifting into 4 wheel drive it could be stuck in 4wd and this would cause cv joints to break, if u have access to lift get all tires in air and try2 vs 4 drive and see if tires turn if not lift front tires off ground tires should turn freelyin 2wd, as u turn tires listen to wheel bearing and shaft noises for grinding clunking indicating bad parts, simple tricks that may help u find problems for cheap good luck!!
Posted on Jul 09, 2009
I agree with duane_wong on this one ( not like he was looking for my approval :) ), it sounds like a problem with the IWE ( Integrated Wheel End ) on that side.
Quick test, when you are in 4H ( or 4L ) does the noise still happen ?
I would say cracked vacuum line to the IWE, or a problem with the vacuum diaphragm in the IWE. You can test by having the motor running in park, and in 2H, and check the vacuum line at the IWE for vacuum. Make sure you test to the vacuum line, not the vent line ( ends in the engine compartment, not hooked to anything )
This is a block diagram of the IWE vacuum system
Posted on Jul 07, 2010
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