Axle Wind-Up
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New User
Joined: Jan 2011
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From: Taxachusetts
Axle Wind-Up
I wrote a previous post about my new 2010 F150 having a "bump" or clunk type sound when I step on the gas from a stop. I found there is a TSB on just that problem which deals with the the joint of the two piece drive shaft.
Well, the dealer mechanic still says it's just "axle wind up" which he says is normal for a "raised truck." Keep in mind that this happens when in TWO wheel drive. My understanding of axle wind up is that when in 4 wheel drive and turning, the front drive shaft/wheels are trying to turn at a different RPM than the rear and if you are on dry pavement it will bind or as they call it, axle wind up. If the wheel doesn't hop and release the tension something else will give in the drive train.
So my question. Is this mechanic blowing sunshine up my skirt or does axle wind up happen in 2 wheel drive also when the front axle isn't even engaged?
Well, the dealer mechanic still says it's just "axle wind up" which he says is normal for a "raised truck." Keep in mind that this happens when in TWO wheel drive. My understanding of axle wind up is that when in 4 wheel drive and turning, the front drive shaft/wheels are trying to turn at a different RPM than the rear and if you are on dry pavement it will bind or as they call it, axle wind up. If the wheel doesn't hop and release the tension something else will give in the drive train.
So my question. Is this mechanic blowing sunshine up my skirt or does axle wind up happen in 2 wheel drive also when the front axle isn't even engaged?
Hotshot
Joined: Sep 2010
Posts: 10,459
Likes: 10
From: RVA
Look up the term "axle wrap". Is your truck lifted? And if so, is it lifted with blocks or full leaf springs in the rear?
What your mechanic is referring to is axle wrap. What you are referring to is drivetrain bind when in 4wd. You guys are on different pages in a way. Axle wrap is common on lifted trucks with blocks especially. The axle is literally rotating from the torque and flexing the leafs and changing your pinion angle in the process. Google it...you'll find some info.
What your mechanic is referring to is axle wrap. What you are referring to is drivetrain bind when in 4wd. You guys are on different pages in a way. Axle wrap is common on lifted trucks with blocks especially. The axle is literally rotating from the torque and flexing the leafs and changing your pinion angle in the process. Google it...you'll find some info.
Senior User
Joined: Nov 2007
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i think axel wind up is when your axel twists up. wich is common when u add blocks to the rear to raise it up. so it would happen in 2 wheel drive. the blocks make it easier to twist up. but i think there is a tsb about getting the driveshaft splines lubed up it its making a noise on takeoff.
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New User
Joined: Jan 2011
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From: Taxachusetts
My truck does it every time I step on the gas from a stop. Every single time. I baby this thing and start off slow and it still does it. Like I said, there's a TSB on that problem which deals with the 2 piece drive shaft. What is the aftermarket solution? Ford has a TSB with their solution.
Laughing Gas
Joined: Oct 2005
Posts: 1,058
Likes: 1
From: South Jersey
My truck has axle hop if I accelerate to hard from a dead stop. I'm actually thinking about taking it to the dealer because a friend has the same 2010 f150 configuration as me but an XLT, and his doesn't do it at all.
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