4H and loud clunk

[Granch]

Noticing the same clunking on a early build 21 4x4 platinum, it’s not constant its pretty hit or miss when the noise happen.

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[Vincem1228]

Just the last 2 times I put my 21 stx in 4hi It clunked so hard I could feel it in the floor. Only 4300 miles, guess it Could be a common problem on these new f150s.

 

[Mtnman1]

the immediately heard the issue. BUT decided last week to check the rear diff....for an issue that only occurs in 4H....of course, rear checked fine. Today I got a call that they are replacing the transfer case, as that’s where the noise is coming from. They suspect that the magnets that engage the front axles are not engaging/disengaging correctly. Parts order and should be picking the truck up Wednesday.

side note: Ford has got to do a better job getting customers into loaners/rentals. I traded in my Rubicon and I tell you guys, Jeep has it figured out. I assumed a $70,000, one week old F150 that already has issues would get a loaner without question. I was wrong.

Loners are on the dealer, not ford. I have a few dealers around me that do not provide loaners. 2 being a chevy and jeep dealer.

 

[biceps583]

2021 Lariat.

I noticed last night while turning into my neighborhood that I’m getting a loud bang/clunk sound from what sounds like driver side front. We had some snow so I was in 4H when this occurred. I was making a left turn at a normal speed. I had music playing (18 speaker system) and I heard it over that! I turned the music down and then made another left, I heard it again but not as loud. Then today I’m doing some testing to see if I notice anything. In 2H, silence. No sounds at any speed or turns but as soon as I switch to 4H I notice Some weird sounds from the front, almost like a sticking rotor...metal on metal type noise. Then like clock work, turn left and accelerate slightly, clunk! I also noticed in 4H that I get the clunk when I brake somewhat harder (did that for testing). So basically, in left turns only, and sometimes under harder acceleration (around 2,000rpms)/braking. Taking it in Monday.

same issue here with my Gen 2 Raptor, very loud BANGS ?when on 4H and I have a feeling that this means that the transfer case is dead. Did yoy manage to find out what's happening?

 

[biceps583]

same issue here with my Gen 2 Raptor, very loud BANGS ?when on 4H and I have a feeling that this means that the transfer case is dead. Did yoy manage to find out what's happening?

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[Bret56]

2021 Lariat.

I noticed last night while turning into my neighborhood that I’m getting a loud bang/clunk sound from what sounds like driver side front. We had some snow so I was in 4H when this occurred. I was making a left turn at a normal speed. I had music playing (18 speaker system) and I heard it over that! I turned the music down and then made another left, I heard it again but not as loud. Then today I’m doing some testing to see if I notice anything. In 2H, silence. No sounds at any speed or turns but as soon as I switch to 4H I notice Some weird sounds from the front, almost like a sticking rotor...metal on metal type noise. Then like clock work, turn left and accelerate slightly, clunk! I also noticed in 4H that I get the clunk when I brake somewhat harder (did that for testing). So basically, in left turns only, and sometimes under harder acceleration (around 2,000rpms)/braking. Taking it in Monday.
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did the new transfer case solve the problem completely? Mine is doing the same thing. 22 lariat fx4. Clunks when turning left, then again when u straighten out and hit the throttle again.

 

[JohnTrigger]

Bret56, if you click on his name you’ll see he hasn’t been on this site since Apr ‘21 so don’t expect an answer.

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