Ford F-150 (2004-2008) :: 2006 - Front Wheels Won't Engage When Select 4H Or 4L
Dec 23, 2016
2006 Lariat 4x4 Troubleshooting. My front wheels wont engage when I select 4H or 4L. No dash lights are ever lit.
I read up and understand how the system works and plan to replace the solenoid, transfer case motor and both hub actuators. I swapped out the solenoid and wanted to test that it was functioning properly so I followed the video below:
YouTube........
With the engine running and selector switch at 2WD, I pull the vacuum lines off and can feel vacuum at the supply. I then hook up just the supply line up (to the bottom port) and expect to feel vacuum at the other solenoid port (top port - what I would call the outlet) and cannot feel any vacuum.
This has halted my repair attempts as I am not convinced this is functioning and would pull in the actuators if they were functional. I know it's a small vacuum from a small orifice but I would think I should feel it by hand, no?
The solenoid's electrical connector is plugged in during this as well. I get the same performance with the old solenoid and the new. If I bypass the solenoid I can feel vacuum at the front wheel hubs.
Should I try a third solenoid? Seems unlikely I would have 2 bad ones...No OBDII codes at all. What to try next?
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I have a 2006 XLT w/ the 5.4L engine. Manual transfer case, I'm wondering where to start looking for problems w/ the 4x4...the front wheels don't engage.
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I have a 2005 KR that the 4wd doesn't lock in the front wheels. I haven't seen my exact problem as I have been searching it. When I turn the switch. The dash lights both in high and low 4wd. I hear the transfer motor engage in both hi and low. No ratcheting noises from the wheels. I have replaced the solenoid. And still nothing. Checked fuses And they are OK.
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I just recently bought a used 2004 fx4 with 148k and everything appears to be engaging but front wheels not pulling. I've already replaced the IWE solenoid behind the battery to avail, my question is, when I put it in 4H, light comes comes on, but I don't "feel" the transfer case engage, when I put it in 4L, light on I feel it shift. So could the shift motor not be engaging the front driveshaft even though the lights come on?
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2004 fx4, transfer case engages, but front wheels won't engage. I assume the vacuum solenoid is stuck, any other thoughts?
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I have an intermittent grinding noise coming from what sounds like both front wheels, it sounds like metal on metal almost like something metal rubbing the rotor but I just put new pads on and the noise was there before as well with nothing touching the rotors but the pads. The sound will appear out of no-where at low speeds of 35 or below and will continue until I brake and slow down, just before I come to a compete stop the noise will stop with a slight clunk.
I can then drive away with no noise. I am pretty sure it is not brake related except maybe ABS somehow but was also thinking front axle or diff, also have read posts that are bearing related, but both at the same time?. It is the slight clunk before stopping that I can not figure out is related to. It is an 05 f150 xlt 5.4 super cab 4wd with 85k miles
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I have a 2005 f150 and it will not engage the front hubs. It is a manual shift on the fly not electric. I have done some checking and this is what i have found so far. Pull the lever into 4H, dash light comes on, IWE's do not lock onto axle. Same for 4L. The transfer case does come in when lever is pulled into either 4H or 4L. Front end up on jack stands, engine off. Turn either wheel and axle turns with it as it should. Start engine, turn either wheel and it is free from axle, as it should be. so there is vacuum going to IWE when engine is on. Not sure what to check next. Is the vacuum solenoid on the firewall bad?? Is there something not getting activated when i pull the floor lever back?
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When I turn the switch on the front wheels don't engage. I replaced the two vacuum solenoids on the firewall no change. I replaced the actuator motor on the transfer case and everything worked....once. Tried to go around the back of the house thought I was in 4x4 but front wheels not engaging again. buried in mud. I let it set there overnight. Went out earlier started it and put it in 4x4 and it started puling out front wheels engaged. As soon as I gave it a little gas the front wheels became disengaged and it wouldn't go anywhere. I made several more attempts and no luck. I did the vacuum test where you turn the heater on panel and if there's a vacuum leak somewhere the heater blower will default to defrost. It passed this test so I'm assuming there is no leak anywhere. Why it worked right after I replaced the transfer case motor and again only after I got stuck and it set in the mud overnight?
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I have a 2006 F-150 4x4 and the 4x4 quit working, it gives me a P1867 & P1891 code but my scanner don't tell me possible causes. Where to start looking?
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I picked up a 98 jimmy for my son and turns out it has many issues! The one I'm tackling now is the 4wd. Front wheels don't engage "unless you can't tell on these on dry pavement just to test it, but I don't feel it "crab walking" when turning.
Things I've done so far ..... New transfer case vacuum switch, replaced any tore vac lines "I had Hvac issue which is corrected now that I've done this" replaced cable to actuator under battery. It's a 3 button switch and lights appropriately when selecting 4hi or 4lo.
I can hear it engage and disengage and also hear the tccm click when I push the buttons. The cable pulls the actuator and the actuator moves and holds as it should which leads me to believe everything is working but why aren't the front wheels engaging??
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2006 F150, SuperCrew with 5.4
I just replaced the firewall actuator valve for the hubs, and went to try out the 4 wheel drive. The hubs engage and lock to the axle shaft, the transfer case engages and locks to the front driveline, but the front differential isn't doing anything. Is there an actuator for the front or did something break inside?
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my f150 has the push button 4x4 and the light on the dash illuminates but i get no power to the front wheels only a grinding noise if the rear wheels spin.
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I just bought 2006 f150 4wd . It make a grinding sound on both sides in the front end..it seems to be independent and when I slow and come to a stop, I makes a clanking noise like its locking something in.
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Some say the front drive shaft should turn by hand in 2h and some say it shouldn't.... I have an 06 FX4, with auto locking hubs (meaning if I want 4H i turn from 2H to 4H). I've been getting a terrible shake at 55mph (yes I've read the forums on that too, not my question) .
So I crawled underneath to look at rear driveshaft, u joints, etc..., and by chance I grabbed the front driveshaft to pull myself forward to check out everything else, and it didn't turn......
I twisted a little and the shafts going to both front wheels turned. Now shouldn't these turn freely in 2H?....The light to 4H never comes on when I switch it, but it is engaged (or else I'd never have gotten unstuck....several times)... Am I stuck in 4H and just didn't know? .
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I'm not too familiar with the difference between lift kits and leveling kits. I want to lift my truck 2" but in doing research do i need get a lift kit and a leveling kit? For the front and the back? I have a 2006 F150 4.6 V8 RWD I also haven't been able to find any good places to but the kits (also because I don't know what all i may need) It would be ideal to get a kit i can bolt on myself.
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2008 5.4L triton. When I'm in the snow or mud and engage the 4 wheel drive I hit the gas and I can hear what I think it is the hub spinning but it will not turn the wheel. Hoping it is not my transfer case...
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Truck shifts great from 2 to 4h to 4l and back to 2. However, at random times - any speed - usually when slowing down - I hear/feel something engage and there is usually a ratchet sound. I figured out its the 4x4 - if I switch to 4h then back to 2 quick, it stops. What the heck.
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I have a 1998 F-150 and when shifting into 4 wheel drive (manual floor mount shifter) the drive shaft from the transfer case turns but the wheels do not engage.
Looking for a diagram of how the axle works?
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For the last little while I have been having an issue with the 4wd in my 2006 F-150 with about 93k on the clock. Sometimes it would engage when I switched to 4H/4L and other times it wouldn't. A friend of mine works at a Ford dealership and said it could be the vacuum solenoid on the firewall going bad. So I bought a new one and as I removed the old one, noticed debris in one of the inlets. So I cleaned that out and neither old or new solved the problem. Then I went through ALL of the vacuum lines and found some debris in parts of them....
Cleaned them all out and still nothing. Then I got to thinking it may be the ESOF motor on the transfer case. Checked to make sure there was power to the plug, which there was. Removed the motor and turned switch, and the motor seemed to be working. Reattached the motor and the 4wd would engage/disengage without problem. Pretty much everywhere I went I would check it and it worked fine . Then all of a sudden it didn't . So I took the motor off, turned selector and it worked fine. No issues yesterday at all.
So, I am not sure if it is the motor going bad or not. Could there be a contact problem? I talked to a mechanic this morning and he told me to drive around with it in 4H for a while because more times than not it doesn't get used enough. I'm just not sure what could be going on...am I missing something?
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I have a 2007 ford f150 and the 4wd will not engage at all checked vacuum lines they all look intact wondering if it could be the IWE solenoid and is there any way to test the IWE solenoid ...
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