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Old 04-13-2015, 01:44 PM
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Is your 4x4 system not working? Forum members suggest various methods to fix the problem. The methods include:
  • Tapping with a hammer to free up a stuck actuator
  • Replacing the shift motor
  • Replacing the Integrated Wheel Ends (IWE)
  • Finding a vacuum leak in the system

Read the full discussion below to find out the preferred methods.
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4x4 not working on 2005 F-150

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Old 05-13-2013, 11:24 PM
Senior Member
Join Date: Apr 2008
Vehicle: 2005 ford f150
Posts: 251
I have a ford f150, 2004 fx4 with the 4hi and 4lo lights blinking 3 times and then repeating 3 times after awoke longer, what does this mean?
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Old 03-08-2014, 12:12 PM
Join Date: Oct 2002
Location: Thorold, Ontario, Canada
Vehicle: 2005 ford f150
Posts: 43
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I amhaving similar problems with my 2005 FX4, it would not go into 4Hi or Lo, I keep trying every now and then, and one day it does go into 4WH, GREAT!!!!!! now it won't come out of 4WH, so I try putting it into 4WL, it goes in, and now won't come out of LOW. I replaced the shift motor last summer when this happened, and it fixed it for a few days, then stopped going into 4WD, I don't think its the IWE's cause it wouldn't go into 4WD and drove in 2WD no problem, until the ESOF finally did send a signal to the shift motor to change to 4WD.

I think my shift motor is not getting the signal to change. I have also replaced the vacuum solenoid, so that rules that out. My mechanic did say I had no power going tot he shift motor at one point when he was working on it, but then power came back.
2005 F150 FX4 Supercrew 5.4L
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Old 03-10-2014, 09:06 AM
Junior Member
Join Date: Mar 2014
Posts: 1
I had this problem too, and after several days of frustration finally re-checked the switch. And that was where the problem was. It was intermittent, sometimes it would work, other times only some of the contacts would work. I would get the 4X4 to engage but not disengage. Sometimes the indicator light would work, other times it was out when the switch was on.
Hope this helps.
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Old 12-07-2014, 12:03 AM
Junior Member
Join Date: Dec 2014
Posts: 3
I had a similar Issue

your 4x4 is a vacuumed activated system. Tapping your hubs with a hammer may help loosen up a stuck actuator. There is also an electric motor on your transfer case. Mine would hang up when I first got my truck due to that the previous owner never used it. I had to tap the motor a few times and then it started to work. Since then I engage it at least once a week to keep it free. There is a lot of info on the net and probably this site on how to check your vacuumed system for leaks etc. good luck. Cudda
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Old 12-07-2014, 12:38 AM
glc glc is offline
Senior Member
Join Date: Dec 2006
Location: Joplin MO
Vehicle: 2003 Ford F150
Posts: 31,722
Who exactly is your reply directed to? Please note the date of each post.
2003 F-150 XL RCSB 2wd 4.2 M5OD 3.55 LS
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Old 02-14-2015, 04:02 PM
Junior Member
Join Date: Feb 2015
Posts: 1
i have the same issue did u ever get it fixed

Originally Posted by carmean View Post
I have an 05 ford f150 4x4 stx with a manual 4wd shifter. When I put it in 4wd the light comes on saying 4x4 and the front drive shaft moves when I am going forward and backward but the front wheels are not locked in. Seems like everything should be working, even low range doesn't work but the correct light comes on and the gearing changes as it should but the rear wheels will only spin. does anyone know what might cause this and what I should do? Thanks
did u ever get it fixed
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Old 02-16-2015, 06:25 PM
Junior Member
Join Date: Dec 2014
Posts: 3
No 4x4

I had a simular problem. Sometimes I would not even get a lite on the dash. I checked the celinoid,vacuume etc. Guess I got lucky. I read on this site that the mecinisims hang up at times and as simple as a tap with a hammer can free them up. Well to my surprise it workeded. I had to climb under the truck a few times but tapping on the front hubs from the inside and on the electric motor on the transfer case. The later I think was my main thing. Just tapping on and around the area on the transfer case would cause it to activate. After several of these it seemed to free up. Now I try to put it in low and Hi range out at my deer camp at least ounce a week to keep it from sticking from non use which I believe was my problem from the start. The fella I bought the trck from never used the 4X4. Good luck. Hope it as easy for you.
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Old 02-20-2015, 03:30 PM
Junior Member
Join Date: Feb 2015
Posts: 1
05 f-150 base

I got a 05 4x4 base shift on the floor. Everything seems to work. It feels like everything locks in but the front wheels won't pull. I found a vacumme leak n fixed it and it has vacumme but front wheels won't pull
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