Rear Diff Issues
5 Year Member
Joined: Dec 2015
Posts: 348
Likes: 49
From: Santa Fe, Tx.
I had my leaking pinion seal replaced well before 36,000 miles under warranty. Less than a year later, the howling started and a few months after that, the e-locker came apart and trashed the differential. Took them 9 weeks to get the parts and fix it. So far after putting 5k miles on it, it's doing good. Don't procrastinate and wait to get it fixed. Good luck with it.
Senior Member
Joined: Nov 2020
Posts: 117
Likes: 62
From: MN
My 2018 XLT, 3.5, max tow, 355 rear, was low on lube from new. Had to replace ring and pinion at 85k. ESP warranty covered it. Was about 1.5 pints low. No leaks so I never bothered to check it and the dealer where I bought it new didn't either.
Thread Starter
Junior Member
Joined: Sep 2015
Posts: 25
Likes: 2
Last time I had a howl and a pinion seal leak it ended up being the carrier bearings, and pinion bearing/seal. Diff gears themselves were fine. 2016 F150 that was at 175k km. Did a pinion seal way earlier like 20k.
Still has a light howl same thing, on the gas only, quiet when not. Nothing leaking, nothing hot. Seems fine.
I'd get a second opinion on if its the whole diff. From the **** and abuse mine has been through I have to say they are fairly strong.
Still has a light howl same thing, on the gas only, quiet when not. Nothing leaking, nothing hot. Seems fine.
I'd get a second opinion on if its the whole diff. From the **** and abuse mine has been through I have to say they are fairly strong.
Thread Starter
Junior Member
Joined: Sep 2015
Posts: 25
Likes: 2
I had my leaking pinion seal replaced well before 36,000 miles under warranty. Less than a year later, the howling started and a few months after that, the e-locker came apart and trashed the differential. Took them 9 weeks to get the parts and fix it. So far after putting 5k miles on it, it's doing good. Don't procrastinate and wait to get it fixed. Good luck with it.