Rear ends in the Fx4? - Ford Powerstroke Diesel Forum
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post #1 of 9 Old 12-11-2011, 03:50 PM Thread Starter
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Question Rear ends in the Fx4?

How is the rear end locked up on fx4 trucks when the truck is put into 4wd? Is it electric or vacuum powered?
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post #2 of 9 Old 12-11-2011, 06:51 PM Thread Starter
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Come on guys.
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post #3 of 9 Old 12-11-2011, 07:02 PM
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did your google subscription run out?
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post #4 of 9 Old 12-13-2011, 02:30 PM Thread Starter
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did your google subscription run out?
No need to be a dickhead. If you don't know the answer to the question, don't post.
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post #5 of 9 Old 12-13-2011, 02:46 PM
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oh, I thought you were talking to everybody on the forum when you said "come on guys"

like you were tapping your toe and frustrated with every member on the forum for not answering your question
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post #6 of 9 Old 12-13-2011, 02:46 PM
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I don't understand your question.

Trucks with ESOF have electronically activated vacuum locking hubs if thats what you are questioning.
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post #7 of 9 Old 12-13-2011, 03:18 PM
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I dont think they all have a locker in them. I think the older ones were just a limited slip and I think the newer ones are electronic but dont quote me. OHHHHH please dont quote me.

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post #8 of 9 Old 12-13-2011, 04:31 PM Thread Starter
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I don't understand your question.

Trucks with ESOF have electronically activated vacuum locking hubs if thats what you are questioning.
Talking about the year. It is something offered on the newer trucks.

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I dont think they all have a locker in them. I think the older ones were just a limited slip and I think the newer ones are electronic but dont quote me. OHHHHH please dont quote me.
They ARE a limited slip, but in 4wd, the rear end is locked. ie. both tires get the same torque, and spin at the same speed.
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post #9 of 9 Old 12-13-2011, 04:33 PM Thread Starter
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The locking differential is useful for serious off-road vehicles and for drag racing. This type of differential has the same parts as an open differential, but adds an electric, pneumatic or hydraulic mechanism to lock the two output pinions together. This mechanism is usually activated manually by switch, and when activated, both wheels will spin at the same speed. If one wheel ends up off the ground, the other wheel won't know or care. Both wheels will continue to spin at the same speed as if nothing had changed. This maximizes the amount of forward motion, irregardless of wheel slippage - perfect for drag racing.
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