Barry_Vee

My 2011 w/LSD does not make banging noises like the OP describes. 2nd gear only doesn't help me. But I might look for a front drive line/front axle issue anyway.

MEZERR

Is the e-locker turned on when the noise is present? Does it do it with the elocker off?

FordService

Hi folks,

Get in touch with me if you're currently experiencing this banging noise; I want to see what I can do to help. PM me your full name, best daytime phone number, VIN, mileage, and servicing dealership; I'll start my research.

Crystal

username taken

Mine actually still made the noise with the solenoid for the locker unplugged. Sending PM now

Dvanderzee

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oneinch

My truck has exhibited this symptom this year. 96K miles. You won't convince me this is normal. My truck is in the shop a third time in a row for this. Each time they replace different parts. Thank God it's warranty work. I've experienced this bang in 4H and 4A. This bang can only be two things; broken gears or slipping clutches. Only the transfer case has a clutch and I don't have broken gears. This third time in they are finally going to look at the transfer case. I'm expecting a new transfer case. Tomorrow or the next day I'll have an answer.

RJR

Any answers, on your issue? My truck an 11 F-150 has been doing this for years I've had it looked at three times with zero answers so far. I'm debating upgrading or at least ditching this truck because my warrenty just expired and I don't want to risk this being something major.

oneinch

The dealer said it was the LF IWE. They had previously replaced both IWEs, the LF hub and vacuum lines. I drove away and within a mile it did it again. I turned around and went right back to the dealership. They figure it was a defective IWE. They replaced the LF IWE. It has not done this again...so far.

I can only say what they told me. I listen with a big huh? on my face. I just don't have great faith in their ability to diagnose problems. A lot of these mechanics as young and inexperienced. They consult yes/no flow charts to come up with possible answers.

Here's is how I tested for this. I found a straight road that was smooth and a slight incline. I want a constant load on the drive train. I drive up this with cruise control on 25-35 mph. I engage/disengage 4A and 4H. I got a single BANG! Not multiple bangs. It seemed like 4x did engage but I quickly disengaged it. Not knowing what it was I didn't want to do more damage. In hindsight I wish I would just tore the hell out things. Something totally broke is easier to fix. Like I did though, it hasn't done it again and I keep testing for it.

Oh, I always did this going straight. The dealer would say you can't use 4x on dry pavement. Yes you can. Going straight is not the problem. Making turns is. The dealer carrys this BS causes my lack of confidence in them.

Ahmedyar

hey - I am facing the same issue with my 2012 Raptor - this LF IWE, is it the IWE switch on the firewall. Thanks for the help in advance.

I was in the desert when it happened and it scared the crap out of me.

Doug overfield

I have a 2018 Ford F-150 4 x 4 my 4 wheel drive locks in okay but when I go to take it out it will not disengage unless I stop turn the vehicle off and wait a few minutes sometimes when it does disengage and I'm driving it will make a loud bang and I'm taking it to the dealer twice and they told me that actually this is normal for a truck with miles on it because there's a slight tread difference I have a 2/32 difference between the front and the back tires and they're telling me that the only way to solve that is to put a new set of tires on the truck my truck only has twenty-six thousand miles on it and the tread depth is only at 9/32 and 10/32 + 11/32 so I can't imagine you would need to buy new tires when you're only down a few 32 nds from a new tire it seems unreasonable to me it sounds like the front is going to come apart when it comes out of four-wheel drive but yet I'm told this is normal I'm coming up on the end of my lease and I don't want to get anything for it at the dealer when they drive it and hear the loud bang when it comes out of 4 wheel drive what do I do I need some direction here the service manager tells me there's nothing they can do about it they've changed out the IW he's and they've looked everything over and said everything is fine frustrated for donor this may be my last for if I don't get something done on this
number adding name and phone number I would like to have my name and phone number my name is Doug Overfield phone number is 402-630-7915