IWE Grinding

[WhiteLightningnshitshadow]

Man I'm hoping this isn't a big deal. It was mid 20s this morning and I took a short trip to the gym (2.5 miles). The 2022 2.7 ESOF truck with only 340 miles was grinding it's front right IWE for a half second every time I took my foot off the gas. I'm actually typing this from the gym, but I'll see how it does the rest of the day as I have some errands to run. Does this mean meaningful damage?

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[zacko11288]

Same issue but front left, breaks look good. I'm assuming mine is IWE because it reminds me of when I used to have manual locking hubs and they would not fully disengage. This seems to be a somewhat common issue based on reading other threads. Noise also stops if I engage 4x4

 

[WhiteLightningnshitshadow]

After seeing some threads on older Gen 13 trucks with the same issue, it seems IWEs are supposed to be engaged full time UNTIL the truck warms. This kinda makes sense for me because 2.5 miles wasn't enough to even get a quarter way warm.

 

[JExpedition07]

The system is not comparable to the 13th gen as we have electronic hubs. They have vacuum hubs which normally were a vacuum diaphragm problem.

 

[WhiteLightningnshitshadow]

The system is not comparable to the 13th gen as we have electronic hubs. They have vacuum hubs which normally were a vacuum diaphragm problem.

I thought these 14th gen were electronically actuated, but still vacuum operated?

 

[JExpedition07]

I thought these 14th gen were electronically actuated, but still vacuum operated?

No vacuum at all from what I have read, it’s electromagnetic

https://www.f150gen14.com/forum/threads/4x4-system-differences.1208/

 

[JExpedition07]

I just linked a thread which does show a vacuum line, so you are correct it must still play a role

 

[WhiteLightningnshitshadow]

Yeah I thought they were a little different from previous gens, but I couldn't say exactly how other than I think they still use the vac system. Electromagnetic would make too much sense. Kinda ridiculous they're default locked without vac pressure. Should be designed to be default unlocked IMHO with a manual override if the system fails that has you lock them from the outside like has been done for a long time.

 

[antho]

They are electromagnetic. The line you see is a breather tube. The air has to go somewhere when actuated as it’s sealed.

 

[Chease44]

My truck is currently in for an IWE replacement on the front left. 3rd time is the charm apparently as I had it in twice before and they couldn’t recreate the grinding noise. I spoke to the tech about the new IWE system and he said they have electric solenoid on them but it is still vacuum that engages them, at least on my 3.5 EB. I believe the old system had the vacuum keeping the IWE’s disengaged. I did see the post about that line being just a breather but I have not personally verified that on my own truck. Just an fyi my front pinion seal is being replaced also as I noticed oil on the crossmember under the front diff, may be worth a check on your own trucks.

 

[WhiteLightningnshitshadow]

Man this is a pretty major change. If I were Ford, this improvement would be in the advertising materials. I just read that other thread about it being a breather.

 

[WhiteLightningnshitshadow]

My truck is currently in for an IWE replacement on the front left. 3rd time is the charm apparently as I had it in twice before and they couldn’t recreate the grinding noise. I spoke to the tech about the new IWE system and he said they have electric solenoid on them but it is still vacuum that engages them, at least on my 3.5 EB. I believe the old system had the vacuum keeping the IWE’s disengaged. I did see the post about that line being just a breather but I have not personally verified that on my own truck. Just an fyi my front pinion seal is being replaced also as I noticed oil on the crossmember under the front diff, may be worth a check on your own trucks.

Did it happen when cold out? Mine only happened this morning when it was below 30. I drove another 60 miles today on some back roads mostly and didn't have any issues.

The mechanism you're describing is what I thought they were as well. I did just read this other thread linked above about them possibly/likely being exclusively electric. I'll try taking a look at my 22 ESOF 2.7 this weekend.

 

[Chease44]

Did it happen when cold out? Mine only happened this morning when it was below 30. I drove another 60 miles today on some back roads mostly and didn't have any issues.

The mechanism you're describing is what I thought they were as well. I did just read this other thread linked above about them possibly/likely being exclusively electric. I'll try taking a look at my 22 ESOF 2.7 this weekend.

The grinding started a few days after I put my snow tires on in late November so yes it was likely below 0 (I’m in Canada). It’s was terribly load around christmas time and I almost feel like the teeth ground right off the IWE because it hasn’t been that bad since. Mostly makes the noise with the steering wheel turned 90 degrees left and 15-20km/h. When I put my all season tires back on in a couple weeks I will try to trace that vacuum line as well.

 

[antho]

 

[WhiteLightningnshitshadow]

I mean this makes it sound like an it's either on or off sort of thing. Makes me wonder why it would have been grinding a little this morning.

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