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question about grinding noise

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Old May 17, 2009 | 04:56 PM
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question about grinding noise

Just purchased a used 2005 F 150 4x4. After driving this truck, it will make a real loud grinding noise. After I slow down, it pops, then stops. We were wondering if the problem had something to do with manual 2 wheel drive to 4 wheel drive shifter. Or possibly a sensor. Please help if you have had this problem.
 
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Old May 17, 2009 | 05:22 PM
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Vacuum leak in the 4X4 engagement system.
 
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Old May 17, 2009 | 06:26 PM
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thanks

What all is involved in getting the vacum leak fixed?
 
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Old May 19, 2009 | 11:48 AM
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Read This:

https://www.ford-trucks.com/forums/8...ml#post7322441
 
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