basic ranger 4x4 question - Ranger-Forums - The Ultimate Ford Ranger Resource
Ford Ranger Forum - Forums for Ford Ranger enthusiast!

Go Back   Ranger-Forums - The Ultimate Ford Ranger Resource Arrow Ranger-Forums Technical Forum Arrow Drivetrain Tech

Drivetrain Tech General discussion of drivetrain for the Ford Ranger.

LinkBack Thread Tools Search this Thread
Old 05-05-2014
Thread Starter

I am: tom saunders
Join Date: May 2014
Location: beaverton, or
Vehicle: 1991 ford ranger
Drive Type: 4x4
Engine: 2.9
Posts: 1
Total Props: 0
basic ranger 4x4 question

Pretty new to this. I have a 1991 Ranger XLT 4x4. 2.9 engine. Pretty stock except for a 3" lift and bigger wheels/tires. Here is my question before I head into mud and sand: even in 4 wheel drive, in very slippery situations like mud and sand, only one front wheel and one rear wheel will spin, right? I mean, the stock vehicle doesn't have lockers, right? and what about posi? Nothing on the front or rear stock? I watched while a brake job was being done, and they spun one rear wheel and the other didn't spin with it... I want to drive the truck out in the dunes, but I'm really worried about getting stuck while 3 hrs from home and no one around.
Reply With Quote
+ 0 -
Old 05-05-2014
ianyboy's Avatar
I am: Ian Berube
Join Date: Mar 2013
Location: Quebec City, QC, Canada
Vehicle: 2011 Ford Ranger Sport4x4
Posts: 302
Total Props: 0
According to, the '91 XLT Ranger had an optional LSD rear diff. Now to know if yours has it or not, check on the diff itself, you should see a metal plate with indications as to diff type and gears
Reply With Quote
+ 0 -
Old 05-05-2014
iTrader: (1)
I am: Ron Dean
Join Date: Jan 2014
Location: Vancouver, BC
Vehicle: 1994 Ford Ranger
Drive Type: 4x4
Engine: 4.0
Posts: 4,727
Total Props: 88
Look on the drivers door edge for the Safety Standard Cert. Label
There will be an AXLE code number like 87 or R6

Go here to look up Ranger axle code: Ford 7.5 & 8.8 Inch Axle Tag & Door Codes

Open = standard axle(only 1 wheel spins)
L/S - Limited slip(both wheels spin if you get stuck, lol)

Limited-slip differential is the generic name, posi-traction is what GM calls their limited slip differential.

There are also locking differentials, these have a selectable "control" that physically locks the differential so both axles spin at the same speed, great for traction but bad for going around a corner on a hard surface.

L/S is a compromise between open and locked differential

Front axle/differential will be the open type no matter what rear is, but it will have the same ratio as the rear, i.e. 4.10, 3.73, ect.....

Lowering tire pressure is a must in the sand, you need a wider softer footprint to stay on top of the sand.
So a portable air compressor or an air tank is handy to have, so you can refill tires and make it to the closest "real" air compressor.
Also in the Oregon Dunes parks a red flag 9ft above the ground is required on all vehicles.
And I believe you need a permit now as well.

Last edited by RonD; 05-05-2014 at 11:37 AM.
Reply With Quote
+ 0 -

Similar Threads
Thread Thread Starter Forum Replies Last Post
2002 ford ranger basic radio size? RogerLee Interior Semi-Tech 3 10-20-2013 10:48 AM
1997 Ranger XLT Basic Suspension Advice Meadows Suspension Tech 2 07-12-2012 05:52 AM
Basic 1993 ford ranger splash 5 speed 2 wheel drive details travisdehate92 General Ford Ranger Discussion 3 11-27-2008 09:00 PM
basic question 503_94ranger_541 Drivetrain Tech 4 07-11-2008 11:33 PM
Suggestions for a basic, but good sound system. pacodiablo Audio & Video Tech 6 10-02-2004 09:22 PM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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

All times are GMT -6. The time now is 07:36 AM.