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4x4 questions

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Old Feb 16, 2021 | 09:19 AM
  #1  
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4x4 questions

89 f250 auto with 460. First question is a simple one. When Im in 4 hi the 'low range" light comes on and vice versa. Im assuming that somehow switch terminals got swapped??

I have driven and owned a lot of different 4x4 vehicles, I realize they can make some extra noise while in 4x4. Drove it in 4h for the first time this morning getting to work after a big snow. It seemed to function fine, but man was is was whiny, like a high pitched growl, especially if I was decelerating. Is this normal? Should I be looking into anything? It wasnt a a heavy grinding sound, like I said more of a high pitched growl or whine.
 
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Old Feb 16, 2021 | 10:03 AM
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Some gear whine is normal but have you checked fluid level in the front diff and t-case? When were the front end components last serviced?
 
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Old Feb 16, 2021 | 10:09 AM
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Thats next on my list. Truck is new to me.
 
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Old Feb 16, 2021 | 10:19 AM
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Lack of 4wd use and maintenance is the biggest challenge with these trucks, I have had to completely overhaul the front end on every one of the trucks I owned, typically the U joints are always dry and seized, diff fluid never been changed, bushings worn out or missing.
 
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Old Feb 16, 2021 | 01:21 PM
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WRT to the lights, are you saying your "Low Range" is on when you are in 4x4 Hi and goes off in 4x4 Lo? Is the "4x4" light on in Hi and Lo? This is a manual xfer case, right?
 
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Old Feb 16, 2021 | 03:12 PM
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Originally Posted by jas88
WRT to the lights, are you saying your "Low Range" is on when you are in 4x4 Hi and goes off in 4x4 Lo? Is the "4x4" light on in Hi and Lo? This is a manual xfer case, right?
I have an automatic transmission, but yes the t cas is manual. When I pull it to 4h the 'low range' dash light comes on. When I put in in 4l (obvious because of the gear reduction) the low range light stays on but the 4x4 comes on as well.

Reading the manual, those lights should be swapped. Its not really a big deal as I can easily tell what range Im in.
 
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Old Feb 17, 2021 | 08:36 AM
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Yes sounds like the wires on the plug going into the xfer case are reversed.
 
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