Question about 2004 Ford F150

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4X4 sounds like gear not meshing

When disengaging  4 wheel drive, drivers side hub sounds like a gear not fully meshing. Now also does it when switching back to 4H.

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  • robertson458 Nov 17, 2008

    i also have a problem like this but when mine is in 4x4 it pulls hard to the right and is hard to control when disengaed it sounds like its still in 4x4 it feels like the hubs are not locking and or unlocking properly

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Get rid of the crappy O.E. locking hubs. Go to the parts store and buy some Warn manual locking hubs. They are easy to install and will fix your problem.

Posted on Nov 20, 2008

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Toyota tacoma stuck in 4 wheel drive ( but just the front drivers side hub/wheel


I need to know the year and if your 4X4 is electronic or manual shifter.
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08 f150 4x4 on front end only one side is disengaging when in 2 wheel drive. The problem is when engaged into 4x4 wheel drive the front drive line spins and both sides engage but only the back wheels spin...


If I read this correctly ( which I might not have, bit early for me ), the front drive shaft will engage ( from the transfer case ) but the front wheels are not engaged ?

If so, sounds like either the vacuum from the IWE ( Integrated Wheel End ) is not being released, or the IWEs have had an issue with part vacuum ( damage vacuum lines ) and the IWE gear is rounded off.

If you pull the vacuum lines at the IWEs ( there are 2 lines, 1 is the vacuum line, the other is the vent tube that routes up into the engine compartment and is not attached to anything ), the front wheel should engage ( might need a 5 * turn to mesh the gears ). With the vacuum lines off, jack up the front axle ( take precautions, chock the rear wheels, parking brake, jack stands, etc ) see if the front wheels are engaged ( turning one wheel should turn the other ). The option is to do this after the truck has sat over night, and the vacuum has been released out of the vacuum reservoir.

If the wheels turn correctly ( engaged ) I would think the contact plates in the transfer case are not making contact. Good starting point for this is the connector on the side of the transfer case, some times this gets gummed up, and the pins do not make good contact. The contact plates in the transfer case are used for a few things, one of them is to signal the IWE solenoids to release vacuum to the IWEs.

Operationally vacuum holds the IWE ( Integrated Wheel Ends ) out, and once vacuum is removed the spring engages the IWE.

Here is a black diagram of the IWE vacuum system
sscullys_108.jpg

Feb 05, 2011 | 2004 Ford F150

2 Answers

Front drive shaft not fully engaged in 4WD, with truck on stands all 4 wheels do rotate but if i stop front wheels the front drive shaft is not engaged


Hi,
Do you have auto locking hubs on the front wheels, or manual locking hubs?
If you have auto locking hubs chances are they are not engaging properly and will need to be removed and spline sets checked for broken teeth on locking hub and locking shaft.
If you have manual locking hubs then check that they are firm when turning to engage them in the lock position.If they are light when engaging them to the lock position then they my have broken/worn out the locking hub and spline. Also check that the engaging spring inside the hub has enough tension to engage the hubs they may be broken. If the hub are all ok then you have a problem in the transfer box, where the 4WD lever is not meshing the transfer box properly. Hope this helps, let me know how you get on.

Jason

Apr 04, 2010 | 2002 GMC Sierra C/K1500

1 Answer

I have a 96 F150 4x4. I heard a noise that


4 wheel drive trucks make this sound alot im guessing its a manual shift so i would saw that the meshing is more of a grinding instead so i would have the transmission rebuilt to fix the problem or just see if the rings inside the trans. is missing the tooths on it :)

Mar 23, 2010 | 1996 Ford F150 Regular Cab

1 Answer

4x4 lights come on but it does not go in what could it be


There are issues with the 4x4 system I.w.e ends ingesting moisture/water into vacuum actuation system causing no 4x4 or ratcheting outboard I.w.e ends. (Even if you don't go 4x4'n ) pull off vacuum hoses @ I.w.e ends and check for moisture/water/rust also the I.w.e is not part of the wheel bearing itself It is the part on the axle side (inboard) of the spindle. (EVEN DEALERS CAT LISTED WRONG )Many shops just replace the wheel bearing side this may fix the symptom but not the true cause of damaged I.w.e. ! Check with a reputable dealer they should have info on this condition and repair procedure.
The integrated wheel end (IWE) system contains the following:
Vacuum reservoir
IWE solenoid
IWEs (spring loaded vacuum hubs)
Vacuum hoses
Check valve
The IWE system uses vacuum hubs that engage the front wheel hubs to the front halfshafts or disengage the front wheel hubs from the front halfshafts

The IWE solenoid receives engine vacuum from the vacuum reservoir.
When the 4-wheel drive system is in 2WD mode, the 4x4 module (PCM) supplies a ground path to the IWE solenoid to apply vacuum to the integrated wheel ends (disengaging the front hubs from the front halfshafts). In 4WD mode, the 4x4 module (PCM) does not supply the ground path to the IWE solenoid, vacuum is not applied to the integrated wheel ends and an internal spring keeps the front hubs engaged to the front halfshafts.

Feb 02, 2010 | 1998 Ford Expedition

1 Answer

My 97 ford f150 4 wheel drive whont lock in to 4high fuses are good but no fire 2 dash swich can any one help?


There are issues with the 4x4 system I.w.e ends ingesting moisture/water into vacuum actuation system causing no 4x4 or ratcheting outboard I.w.e ends. (Even if you don't go 4x4'n ) pull off vacuum hoses @ I.w.e ends and check for moisture/water/rust also the I.w.e is not part of the wheel bearing itself It is the part on the axle side (inboard) of the spindle. (EVEN DEALERS CAT LISTED WRONG)Many shops just replace the wheel bearing side this may fix the symptom but not the true cause of damaged I.w.e. ! Check with a reputable dealer they should have info on this condition and repair procedure.


The integrated wheel end (IWE) system contains the following:

Vacuum reservoir
IWE solenoid
IWEs (spring loaded vacuum hubs)
Vacuum hoses
Check valve
The IWE system uses vacuum hubs that engage the front wheel hubs to the front half shafts or disengage the front wheel hubs from the front half shafts.

The IWE solenoid receives engine vacuum from the vacuum reservoir.

When the 4-wheel drive system is in 2WD mode, the 4x4 module (PCM)supplies a ground path to the IWE solenoid to apply vacuum to the integrated wheel ends (disengaging the front hubs from the front half-shafts). In 4WD mode, the 4x4 module (PCM) does not supply the ground path to the IWE solenoid, vacuum is not applied to the integrated wheel ends and an internal spring keeps the front hubs engaged to the front half-shafts.

Good luck and check the vacuum line, start with the simple. Keep me posted, be glad to get your 4wd working again.

Jan 26, 2010 | 1997 Ford F150 Regular Cab

2 Answers

When engaged in 4x4 hi. im getting this clicking sound while driving. stops when truck stops. its a 96 with the 5.0


It could be several things. The first thing that comes to mind is your u-joint(s) on your front drive shaft. Try turning it by hand, if it has some play in it, it needs to be replaced. There are many other things that can cause your clicking noise tho:

Ball joints
Wheel bearing/wheel hub
Sway bar links

If your clicking noise sounds more like a "electrical" click, Then you might have to try following the noise and give more details about your problem.

Jan 18, 2010 | 1996 Ford F150 Regular Cab

1 Answer

My 4 wheel drive will not disengage


You might want to check the gear selector switch that is located on the driver side of the tranny, if the 4x4 is electric and not manual for engagement, selector must read neutral to disengage 4 wheel drive. by experience if you drove it through deep water gear selector switch can get damaged.
Your hubs may be locked as well. Try reversing for 30 or more feet to try manually unlocking your hubs. Make sure 4WD is turned off when trying.

May 25, 2009 | 2003 Chevrolet Suburban 1500

1 Answer

1990 Suzuki Escudo 4 wheel drive


As far as I know the procedure should go something like this...

Stop the vehicle, engage the parking brake and if applicable, get out and turn the hubs on the front wheels from Free, to Lock.(You may not have these on a Suzuki, they may be auto-lockers)

Get back in the vehicle and put the transmission shift selector into Neutral.

If you have a manual transfer case, move the selector-shaft to 4x4-High, or 4x4-Low -- whichever is desired. Now, putting the vehicle in gear with the transfer case is sometimes somewhat difficult. As long as the vehicle's transmission is in neutral, don't worry, the gears inside the transfer case are big and beefy -- Don't be afraid to be rough -- Again as long as the transmission is in neutral. You may also have to disengage the parking brake and slightly let the vehicle roll forward or back with your foot-brake to get the Transfer case to lock into place.

Once 4x4 of the selected High, Or Low range is selected, usually indicated by the vehicle jerking slightly with a slightly loud clank/thud. Move the Transmission selector out of neutral into your desired gear (Drive if Automatic, if Manual, whichever gear you pull out from). and voila! You should now be in 4-Wheel-Drive.

To disengage 4-Wheel-Drive. Just reverse the steps.

May 16, 2008 | 1990 Suzuki Sidekick

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