4x4 grind in front end when in 2 wheel drive

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Dec 20, 2008 - 4x4 not working on 2005 F-150 ... I cut this out of the 2005 shop manual for Four Wheel Drive - Electronic ... 1998 Ford F-150 4.6L Long Box! Help 4 wheel drive not working -lights work- vacume to wheels ...
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Ford F150 4X4 Diagnosis No Tools Required - YouTube

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I have a 2005 F150 FX4 and the hubs seem to lock intermittently.... of the tire, but the driver side CV shaft remains engaged with the tire even when ... What happens when can not get INTO 4wdLights come on here the clunk have .... 1994-2015 Ford F150 5.4L & 4.6L VCT Solenoid Replacement - Duration: ...

4x4 not working - Ford F150 Forum - FordF150.net

If the shaft is powering out to rear end then internal on rear possibly broken differential. If no power from case to rear then broken in case.

You may have a bad bearing or CV joint.

put the vehicle on a lift and have the mechanic observe the entire driveline while its running on the lift with the tires turning..this takes 2 people.. the shafts..and each wheel..look for anything loose or banging..its usually the front end that makes a lot of noise..it may also be in the transfer case..normally caused by different gear ratios in each axle..they must match front to rear..

replace wheel bearings or check for feathering of tires

Hi,
your description is a little generic, however, that is what we shall work on.
Is the grinding apparent whether the 4X4 is engaged or just in 4X2 mode? On left lock or right lock?

Best thing would be to put the front end on axle stands and start checking. Check the front wheel station on each side by trying to rock it top and bottom. Rotate each wheel and check for noise. When doing this check, listen for any noise emanating from the actual drive shafts to the hubs.

Drain the front differential and check the drained oil for metal shavings etc. To be honest, "grinding" noises usually are accompanied by damaged parts. It's just a question of checking each item in turn. Also check the front prop / Drive shaft for UJ's that are dry and thus will make noise. Also include the sliding spline in your check, again, if it's dry it will be noisy, and it could be intermittent.

4X4's need to have the front ends greased on a regular and generous basis.
You did not mention if you had hublocks fitted, which would be another check to carry out.

Good luck.

Today and over the weekend .I too had the same problem. Took it to the dealer and they tested everything and could not find the problem. Did vac test on the lines, Test drove it with code tester to see if there was any problems . Checked the hubs... They replaced the IWE solenold. Just hope that is the fix and it didn;t damage anything else... Thanks for the above info!

might check the bearings to see if properly greased

I had this problem in my 2005 F-150 twice! The first time was covered under the warranty and the second time was out of my pocket! ( close to $500.00!) There is a solodoid u[pp on the firewall that gets water into it then it corrodes the lines and such. Ford dealership replaced 2 valve assemblies, 2 actuator assemblies, and the IWE Solonoid to fix mine. They claim the problem will not come back but that remains to be seen.

My 2003 F150 Supercrew would not engage in 4x4, it ended up being the shifting fork in the front end, cost me $200.