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Where is vaccum solenoid?

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  #1  
Old 11-13-2017, 08:23 AM
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Where is vaccum solenoid?

09' F150 STX 4.6L 3V. Have seen some videos describing solenoid as being on back firewall either on passenger side or driver side? Cant find it in either location. Just replaced a different sensor that was in a totally different location too. Seems like 09 is a bit different.
 
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Old 11-13-2017, 08:50 AM
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WHICH vacuum solenoid?
 
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  #3  
Old 11-13-2017, 09:01 AM
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the one controlling vacuum to the 4x4 system. I have seen many descriptions of this part:
 
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Old 11-13-2017, 10:56 AM
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According to the factory service manual, look on the inside engine compartment, just forward of the fenderwell, passenger side, just outboard from the battery.
 
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Old 11-13-2017, 10:09 PM
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Loud ratcheting clicking noise

When I engage the four wheel drive and am going around a turn I hear a load ratcheting type clicking noise. Some sources say this is typical when turning tight in 4x4. But I don't remember it before and Uncles truck doesn't do it. Sound goes away when going straight. There are no noises when in 4x2 that would indicate that the 4x4 is trying to engage. At 125000mi is there maintenance that should be done to system?
 
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  #6  
Old 11-13-2017, 10:40 PM
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If you have traction and turn the wheels in 4wd it's going to make noises. You shouldn't do that. 4wd should only be used on low traction surfaces.
 
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