Help ! What is this.... - Ford Powerstroke Diesel Forum
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post #1 of 12 Old 04-06-2012, 10:22 AM Thread Starter
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Help ! What is this....

(2000 f250)it's some sort of vacuum switch above the passenger side fender wall..... the vacuum lines are taped off and the electrical plug is undone. What is it for and with it unhook what kind of symptoms would i see happening to the truck?
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post #2 of 12 Old 04-06-2012, 10:51 AM
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Is it a four wheel drive?

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post #3 of 12 Old 04-06-2012, 10:53 AM
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That you esof solenoid. I took mine out after I pulled the lines to my hubs. It's for the electronic shift on a fly


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post #4 of 12 Old 04-06-2012, 11:21 AM Thread Starter
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Yes the truck is a 4x4 and now i know why i have to lock my hubs in order for the 4x4 to work...... how many vacuum connections is required on it in order for it to work....3?
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post #5 of 12 Old 04-06-2012, 11:32 AM
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Quote:
Originally Posted by Cdup View Post
Yes the truck is a 4x4 and now i know why i have to lock my hubs in order for the 4x4 to work...... how many vacuum connections is required on it in order for it to work....3?
If you have aftermarket hubs it wont work. OEM "manual" hubs have a vacuum lock/unlock set up.
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post #6 of 12 Old 04-06-2012, 12:00 PM Thread Starter
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I have the factory hubs !
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post #7 of 12 Old 04-06-2012, 12:12 PM
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Originally Posted by Cdup View Post
I have the factory hubs !
When mine had the factory hubs it was anyone's guess whether they would lock or unlock on their own. I finally replaced them and capped off the vacuum lines.
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post #8 of 12 Old 04-06-2012, 12:16 PM Thread Starter
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I only had to use my 4x4 once since I had it.... But the hubs locked and unlock without any problems.
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post #9 of 12 Old 04-07-2012, 04:01 PM
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Just cause the hubs turn to the unlocked position, doesn't mean they're unlocked...

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post #10 of 12 Old 04-08-2012, 09:04 AM Thread Starter
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I'll take another look at them...... but i experiment with doing the unlock and lock of the hubs by climbing the levee where i live to make sure it was in four wheel drive or not. What would be the best way to begin checking the vacuum switch..... hook up the hoses then plug in the switch and see what i got. I would think it would only be 3 hoses that attach to the switch.... correct me if i'm wrong. Thanks for all of the input on this. I really appreciate it!
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