98 f150 front diff not kicking in - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford Forum Ford Forum

» Auto Insurance
» Featured Product
ยป Wheel & Tire Center

Go Back   Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Ford Trucks | Utes | Vans |SUVs | Crossovers > Ford F-100 | Ford F-150 | Ford F-250 | Ford F-350 | Ford Super Duty | Ford Diesel
Register Home Forum Active Topics Photo Gallery Auto Loans Garage Mark Forums Read Auto Escrow

Ford F-100 | Ford F-150 | Ford F-250 | Ford F-350 | Ford Super Duty | Ford Diesel Forum for discussion of the Ford F100, F150, F250, F350, Superduty and Diesel trucks.

FordForums.com is the premier Ford Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 01-23-2008, 11:06   #1 (permalink)
Registered User
 
Join Date: Feb 2004
Posts: 11
98 f150 front diff not kicking in

my sister just bought a 98 f-150 and now the 4x4 dosn't work the front driveshaft spins but dosn't turn the wheels any help ?
i've heard those are vacume operated?
tiresmoke19 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 01-23-2008, 13:50   #2 (permalink)
wwb
Registered User
 
Join Date: Nov 2005
Location: Manitowoc, WI
Posts: 138
Re: 98 f150 front diff not kicking in

The truck probably has the "automatic" hubs if it has a dash-mounted switch for 4WD. There should be 2 positions on the front hubs, marked "auto" and "locked" or something similar.

The purpose of the hubs is to connect the axle shaft to the wheel when in 4WD and disconnect them when in 2WD. They are actuated by vacuum, but can be locked manually if the vacuum system fails.

If the 4WD is engaged by pulling a lever down on the floor, then the truck has manual hubs, marked "free" and "lock" or something similar. These must be locked or unlocked manually.
wwb is offline   Reply With Quote
Old 01-24-2008, 08:41   #3 (permalink)
Registered User
 
Join Date: Feb 2004
Posts: 11
Re: 98 f150 front diff not kicking in

this truck has the manual on floor shift trasfercase but no hubs to turn like the 96 and older fords i think the axle shafts always spin and somehow lock togather in the diff when turned on ???????????????
any ideas
tiresmoke19 is offline   Reply With Quote
Old 02-01-2008, 15:27   #4 (permalink)
Registered User
 
Thunder1's Avatar
 
Join Date: Feb 2008
Location: Colorado
Posts: 2
Re: 98 f150 front diff not kicking in

Just had this happen to my 03. More than likely it is the shifting fork in the front diff that worn out. It's a cheaply made aluminum fork. Mine wore out after only 60K. Maybe around 100 miles a year in 4WD.
Thunder1 is offline   Reply With Quote
Old 04-19-2008, 05:58   #5 (permalink)
Registered User
 
Join Date: Apr 2008
Posts: 1
Re: 98 f150 front diff not kicking in

I had the same problem with my 97 F150. The shifting fork in the front differential was not moving. Removed the small cover, sprayed it with WD40, moved it back and fort with a screw driver as I engage/disengage 4WD. I did this until it was moving freely. I have to do this once a year to keep it working.
lubomir is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Ford Trucks | Utes | Vans |SUVs | Crossovers > Ford F-100 | Ford F-150 | Ford F-250 | Ford F-350 | Ford Super Duty | Ford Diesel



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Powered by vBadvanced CMPS v3.2.2

All times are GMT -7. The time now is 16:56.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.0
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.