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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

electric locker???

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Old Feb 20, 2008 | 07:16 PM
  #1  
Frankenstang57's Avatar
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electric locker???

Just curious, I parted out a '91 F-150 4x4 for a friend.(his dad hit a parked car @ 50mph, it was a mess!) When I got to the rearend I noticed it has 2 wires coming out of it. Is this for some sort of electrically actuated locker? I do know it's an 8.8 and the axle tag says 3L55. From what I understand this means it has 3:55 gears and the L is for locker. I just thought it meant it had a Trackloc unit... If it is what I think it is, how's it actuated? I didn't see a switch anywhere. Thanx!
 
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Old Feb 20, 2008 | 08:00 PM
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Follow wires and see if there is a treasure on the other end.
 
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Old Feb 21, 2008 | 02:13 AM
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Follow wires and see if there is a treasure on the other end.
 
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Old Feb 21, 2008 | 06:33 AM
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It's not the sensor for the read wheel ABS is it?
 
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Old Feb 21, 2008 | 07:12 AM
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Originally Posted by bluesman2333
It's not the sensor for the read wheel ABS is it?
Yes, it is the Vehicle Speed Sensor (VSS) used for the Rear Anti-lock Brakes System (RABS) as well as other functions depending on model.

Its a good score, Franken.
 
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Old Feb 21, 2008 | 08:16 AM
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Those other functions being speed signals to the computer for adjustments based on speed.

If you have a manual trans, the computer will adjust timing and idle air based on speed and clutch position.

If it's an auto, it'll adjust the same kind of thing (like being in drive but stopped) with idle/timing but if it's a computer controlled transmission it'll use the speed to determine shift points.

No locker for you...but a traction lok is there according to the tag. That is a clutch-type limited slip unit.
 
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Old Feb 21, 2008 | 11:31 AM
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Thanx guys!
 
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