4 wheel drive problem

Reply Subscribe

Thread Tools

Search this Thread

Dec 13, 2013 | 08:28 PM

zgraham

Thread Starter

Freshman User

Joined: Jan 2013

Posts: 28

Likes: 0

4 wheel drive problem

I am fairly new to 4 wheel drive Fords. I have a 78 4 wheel drive with the 300 six and a 4 speed. We have had some rough weather here the past week and the 4 wheel drive worked great for a few days. Yesterday I put the truck in reverse and hear a clunking sound come from the front passenger side. I stopped got out and looked, but didn't see anything. The truck drove fine down the hill. When I got to the highway, I put it in 2 wheel drive and went to town. When I got back home I put it in 4 wheel drive to go up the hill. The truck stayed in 2 wheel drive even after I moved the shifter to 4 high. I tried 4 low with no luck. Where should I begin the search to find the problem? I tried unlocking and relocating the hubs with no luck.

Dec 13, 2013 | 08:35 PM

75Three90

Cargo Master

Joined: Dec 2009

Posts: 3,452

Likes: 2

From: Santa Fe Tx

Sounds like maybe your lockouts are bad

Dec 13, 2013 | 08:36 PM

mudweiser2

New User

Joined: Nov 2013

Posts: 11

Likes: 0

probally a hub problem. jack up front end and turn wheel with nhub locked in see if ujoint is turning with wheel or not. if not the hub is not locking or is broken

Dec 14, 2013 | 01:25 AM

f150kindaguy

New User

Joined: Dec 2013

Posts: 9

Likes: 0

hi,
theres a few things that could cause this problem.
checking the hub is probably your best bet..
some of these trucks have free-moving manual locking hubs
the other could be transfer case related.. i wouldn't touch that unless the problem is visible or the hubs are inspected
from your story it sounds like its not fully engaged at some point..

Dec 14, 2013 | 07:50 AM

MeanGreen460

Elder User

Joined: Mar 2013

Posts: 559

Likes: 0

From: In Hastings Delton area

I'd check the lockout hubs they probally need cleaned up and greased

Dec 14, 2013 | 01:29 PM

zgraham

Thread Starter

Freshman User

Joined: Jan 2013

Posts: 28

Likes: 0

Thanks for the help. I will take them out and clean the, ans see if that fixes it.

Dec 14, 2013 | 02:11 PM

iggybob44

Post Fiend

Joined: Apr 2008

Posts: 5,338

Likes: 3

From: Grants Pass, Oregon

Well, about the only thing that should make a sound that comes from the front passenger side would be the hub assembly or front axle shaft..........you probably have an "open" front differential, not a limited slip and if the pass side front isnt getting power transmitted to the ground, the drivers side front wont be getting power either....