Need help with my 4x4!!!
Thread Starter
Junior Member
Joined: Mar 2015
Posts: 5
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Need help with my 4x4!!!
I have a 2005 fx4. I think I'm having some problems with my 4x4 and I need some help. It doesn't work all the time, it's like it works when it wants to. If I was to jack up the front end of the truck so that the front 2 tires are off the ground, and I lock the truck in four wheel drive (with the truck running), should I be able to spin the wheels freely?
Senior Member
Joined: Jan 2009
Posts: 601
Likes: 34
From: Upstate New York
When you say "freely", yes and no.
If in 4wd, front wheels off the ground, truck running, if you turn one front tire, the opposite tire should turn in the opposite direction, because the driveshaft should be locked to the transfer case.
With the front end off the ground, in 4wd, running, crawl under and see if you can turn the front driveshaft. you should Not be able to, because it SHOULD be locked to the rear driveline which is on the ground, and in PARK. If you can, the problem is likely the shift motor not engaging.
Then, turn each wheel, and see if the C.V. shaft behind it is turning as well. That will tell you if the hubs are locking. that could be either a bad IWE (integrated wheel end (hub)), or IWE solenoid on the firewall.
but as I said, if when you do this test, the front wheel turns, and the other turns in the opposite direction, you're probably ok .
If in 4wd, front wheels off the ground, truck running, if you turn one front tire, the opposite tire should turn in the opposite direction, because the driveshaft should be locked to the transfer case.
With the front end off the ground, in 4wd, running, crawl under and see if you can turn the front driveshaft. you should Not be able to, because it SHOULD be locked to the rear driveline which is on the ground, and in PARK. If you can, the problem is likely the shift motor not engaging.
Then, turn each wheel, and see if the C.V. shaft behind it is turning as well. That will tell you if the hubs are locking. that could be either a bad IWE (integrated wheel end (hub)), or IWE solenoid on the firewall.
but as I said, if when you do this test, the front wheel turns, and the other turns in the opposite direction, you're probably ok .
