rahtreelimbs

I have a 2008 F-150 with 3:55 gears and limited slip.........48,000 miles is on this truck. When I first got it it had 36,000 miles and easily spin both rear wheels on pavement. This winter in the snow I could feel both wheels spinning. This evening I was on ice and started to back up.....got about 2 feet and the drivers side wheel was spinning alone. I seem to remember that you need a little bit of friction on both wheels to get both to drive.............anyone shed light on this???

danorules

I could be wrong,but I don't believe the limited slip works in reverse

Platinum T.C.

One rear wheel has to slip, loose traction, then both rear wheels lock and move at the same time.
If you are on Snow, ice, and loose traction, the wheel doing the slipping, I believe it's the right wheel, but may be incorrect on that one, will lock in. Both wheels will spin and
you can still loose traction on both wheels.
Trying to spin both wheels on dry pavement isn't very cost effective. It is designed to help you stay out of trouble. Not to tear out your rear end and get in trouble.
I hope this helps. I know there are clutches involved but I'm no expert and don't pretend to be one.

bill2014

limited slip never really locks the two wheels together instead what it does is allows one to spin and once one is, heat and friction build in the other sides clutch pack and some of the power is transmitted to the other wheel but it is never a full lock. and I don't know if I would try just spinning them on dry pavement, kinda hard on the whole driveline. I think what you are seeing happen over time just happens to be a. the conditions. or b. your clutch packs are a little more worn.

MHOWELL34

Use a little of the E Brake to make the friction, tricks the differential, continue on spinning both tires

FrozenTundraGuy

May be just a good idea to change the rr diff fluid, and add the friction modifer you can get @ your Ford Dealer. I'm doing mine every 30K as I tow with mine.

RajunKajun59

Pulse the brake with your left foot, as fast as you can, it will help (or leave Traction control on, if equiped). A LSD as pointed out doesn't lock up, it just makes it transfer more torque to the wheel that needs it in certain circumstances while keeping the road manners of an open diff. Ice has about as much friction as lifting the wheel off the ground and spinning the tire, the clutch packs will just slip.