2012 F150 feels like spool in 4x4 - FordTough.ca - Home of Canadian Ford Truck Enthusiasts
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post #1 of 15 (permalink) Old 11-29-2012, 04:52 PM Thread Starter
 
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2012 F150 feels like spool in 4x4

My '12 F150 SuperCrew feels like it has a spool in the back on tight turns when in 4x4. It's annoying on snow (yesterday), as it has a tendency to push the truck straight when trying to turn. I have the old school limited slip rear (Trac Lok), not the E-locker. The spool-like "grabbing" gets very pronounced on pavement/gravel. Is this normal behavior for these trucks? Forgive my ignorance if that's the case. This is the first truck I've owned and spent a lot of time behind the wheel of.

Could it be a product of the double driveshaft? The slip-yoke bump that the 157" trucks are famous for comes to mind.

2012 F150 SuperCrew XLT 4x4 - 78kms, 5.0L, HD payload, Solo duals, FX/HD lights, Extang SF
2004 Buick LeSabre, 121kms, daily driver
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post #2 of 15 (permalink) Old 11-29-2012, 04:56 PM
 
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in my work truck 4x4 the turning radius is much larger when in 4x4 and often fells weird in the steering wheel.



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post #3 of 15 (permalink) Old 11-29-2012, 05:28 PM
 
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My 4x4 (won't mention the make) does the same when making tight turns in 4wd. Just make your turns wider and it won't happen

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post #4 of 15 (permalink) Old 11-29-2012, 06:02 PM
 
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yep, it's normal. scared the crap outa me first time it happened..lol Can't turn in 4x4 .
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post #5 of 15 (permalink) Old 11-29-2012, 07:34 PM
 
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Why would you have it in 4x4 on pavement? Of course it will bind.

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post #6 of 15 (permalink) Old 11-29-2012, 08:42 PM
 
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Quote:
Originally Posted by b4000 View Post
Why would you have it in 4x4 on pavement? Of course it will bind.
x2

4x4 on dry pavement or a solid surface is a no no. Regardless of surface 4wd increases your turning radius because your steering tires are also now pulling. 4x4 doesn't work like front wheel drive vehicles.

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post #7 of 15 (permalink) Old 11-29-2012, 09:34 PM
 
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The shorter the wheel base and when you have it in 4x4 turning the grabber it will be, but these new trucks when in 4x4 making tight turns do grab and have a jumping feeling to them.

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post #8 of 15 (permalink) Old 11-29-2012, 10:34 PM
 
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On a 4x4, there's no centre differential.

4x4≠AWD

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post #9 of 15 (permalink) Old 11-30-2012, 12:04 AM
 
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at the end of my street there;s a stop sign.
the stop sign is on an up hill and the street perpendicular to is on a hill. high side to the left.

so I have to leave my street on an uphill and turn to the left on a uphill.

It's usually the only spot i use 4x4 if it's snowy/ icy.
leaving the stop sign on an incline and turning turning into a incline. ..

no 4x4 = no go.. or turn right..
.

a bit of binding and not wanting to turn.. I just push on the throttle a bit more. LOL

then let off and flip it back to 2x4 if it's not horrible.
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post #10 of 15 (permalink) Old 11-30-2012, 09:57 AM
 
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As others have mentioned, this is normal (and really freaking annoying) for this setup. Ford has put no thought into this system. Basically all 4 wheels are trying to turn at the same speed, and therefore naturally it wants to make the truck go striaght. GM's Autotrac system that I had on my Chevy was FAR superior. I had the option of 4X4 or Autotrac (which is essential AWD). I would put it in 4X4 when just driving on open roads, but in parking lots I could switch it on the fly to Autotrac. What it allowed was for the 4 wheels to travelled seperately at there own speed....therefore not loosing my turning radius. When I test drove the F150, I was shocked that in this day and age that Ford hadn't developed something similiar to GM by now.
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