2004 FX4 Rear Locker??
Thread Starter
|
Laughing Gas
Joined: Jun 2011
Posts: 1,223
Likes: 89
From: TN
2004 FX4 Rear Locker??
It seems that every time I put the truck into 4 low, the rear axle locks up. When turning, one tire skips no difference which way I turn. When doing this, I do not have the front hubs locked. Also noticed that when turning in 2wd one tire will spin w/o other locking up. I have spun the tire enough for the L/S to catch, but hasn't. I have heard that the locker was not available until years later. Is this true?
Lead Driver
Joined: May 2003
Posts: 9,303
Likes: 48
From: Lyndonville, Vermont
Jack up the rear put in neutral spin one tire. If LS both will spin same direction. If open opposite direction. Wires on top of diff for speed sensor.
Look at tag on diff L means LS like 4.10L etc.
Dick
Look at tag on diff L means LS like 4.10L etc.
Dick
Thread Starter
|
Laughing Gas
Joined: Jun 2011
Posts: 1,223
Likes: 89
From: TN
No. The rear tires will skip when turning in 4lo. Front hubs unlocked. Does not matter which way I turn, the inside wheel will skip just like the rear axle is locked. Also, when I take it out of 4lo and do not release the tension on the diff, it will stay locked until I stop and back up a few feet. Went to the mountains over easter w/end and had to use 4lo to crawl out of the steep, hard right drive way(Dang near straight up). Did this several times and each time, the inside wheel would skip. At the top of the hill, I would put it back in 2wd. Navigating the turns down the hill, I could tell the rear diff was locked. After backing up a few feet it would release.
After I got home, I did the same thing in the road around the house and each time I put it in 4lo the rear axle locks. Put it in 2wd and both axles are free if I back up a few feet.
Not sure if it was equipped from factory with a locker by special order or not, but it acts just like it has one. When it gets warmer,I will drain and replace both diffs with fluid. Guess I will find out for sure then.
After I got home, I did the same thing in the road around the house and each time I put it in 4lo the rear axle locks. Put it in 2wd and both axles are free if I back up a few feet.
Not sure if it was equipped from factory with a locker by special order or not, but it acts just like it has one. When it gets warmer,I will drain and replace both diffs with fluid. Guess I will find out for sure then.
Trending Topics
Lead Driver
Joined: May 2003
Posts: 9,303
Likes: 48
From: Lyndonville, Vermont
Shouldn't turn hard unless you have a bad ujoint on the front axles.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
FTE Leadership Emeritus
Joined: Sep 2000
Posts: 23,174
Likes: 1,678
From: Stephensville WI
It could be the OP has one hub that is not unlocking, which is causing the issues.
Lead Driver
Joined: May 2003
Posts: 9,303
Likes: 48
From: Lyndonville, Vermont
Dick
Thread
Thread Starter
Forum
Replies
Last Post
Dean06919
1987 - 1996 F150 & Larger F-Series Trucks
1
Aug 27, 2015 12:25 PM