Hey guys.

So I am not sure where to go from here other than go to the dealership. I have a 2016 F150 that when driving is as smooth as butter.

However, when I slow right down sat like I am in a gas station or go through a drive-thru, the truck will feel like brakes are applying then releasing.

It sometimes will happen 2 or 3 times or can happen 8 - 10 times.

The jumps the truck makes can apply as fast as a turn signal blinking, if that makes sense?

It also seems to happen more often when I am in 4 wheel drive.

Any ideas?

Thank you.

 

Are you using 4WD while on dry pavement? If so, that's the problem.

 

Hello Roadie,

Thanks for getting back to me.

Some times, yes. I have a very steep driveway and reversing up it in 2wd won't work so I have to flick it in to 4wd for a few seconds while I get out. That would explain that part.

We have had some icy weather the last few days and I guess around the gas station where they lay a crap load of salt / grit down it can offer some decent traction but it is patchy with some ice and some grit.

Sorry if this has been asked before, I didn't know what to search for so I made my own post. This is my first 4x4. Our other car is AWD and never had this before. My last truck was RWD.

 

If it is occuring while you are turning in 4wd, you are binding the system. You can seriously damage your 4wd if that's the case. It causes the wheels to hop.

You really want to be using 4wd when going straight or on surfaces that are loose and cause slippage.

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Ah OK, this makes sense.

I appreciate you both very much. I have a much better understanding of how it works now.

Thanks again, both!

 

I suggest reading the owners manual: https://www.fleet.ford.com/parts-ser...owner-manuals/

 

Yes, this has been a lot of peoples response when I have seen others looking for help.

When I get the time, I'll be sure to do that...

 

You MUST fully understand the drive system on the vehicle you own.
Locking the front on switch command 4wd, will result in the jumping you experience on high traction surfaces. After all both wheels are locked together where each tries to revolve at different rates in a turn.
The rear, >> if << you also lock it up, is subject to the same physics as the front.
Is there something not understood about this?
AWD does not work the same way.