4th Gear Poster
Join Date: Apr 2006
Location: Ontario, Canada
Put the rear end of the car in the air with the wheels free (jack stands), put it in neutral and spin one of the tires with your hand. If the other tire spins the same way, you have a trac loc... if it doesn't, its an open diff.
...or pop the cover off the diff and look for a big S spring right in the middle of everything...
1994 Lincoln Mark VIII
4.6L DOHC; meter4it.com chase/sequential tail lights; 20" Giovanna Dalars; 4.30 gears; FRPP Track-Lok; SCT tuned; Baumann ReCal; Addco bars; Cobra brakes...
RIP - '86 Mark VII LSC