Limited Slip Question
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Senior User
Joined: Jul 2005
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From: California
Limited Slip Question
I have noticed lately that it seems like my diff is not locking up both sides. When I pull my boat out of water the right wheel spins and I have to put it into 4x4 mode to pull the boat out (it is only a 18 ft. boat...). I did a power brake test and only the right side went spinning. I took it to the dealer and they said everything is fine and that they were able to do a power brake test and both wheels locked up. They also mentions that they put it in the air and rotated one tire and that the other counter-rotated. Is there really a problem or is it just my imagination?
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Senior User
Joined: Jul 2005
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From: California
Big Inch- I thought the same thing when he told me that. I figured that at first the tires would turn opposite, and then after a moment the lock function would ingage and they would turn the same direction.
Cargo Master
Joined: May 2006
Posts: 2,116
Likes: 6
From: Florida
when i buried my rear axle for fun the other day both tires spun. i have not put it in the air to test your theory, read what your door sticker says for axle.
Last edited by raptor131; Aug 3, 2006 at 06:35 PM.
Cargo Master
Joined: May 2006
Posts: 2,116
Likes: 6
From: Florida
The newer 2005-2006 use these codes:
37- 3.73
3L- 3.73 LS
41- 4.10
4N- 4.10 LS
43- 4.30
4L- 4.30 LS
48- 4.88
8L- 4.88 LS
53- 5.38
5L- 5.38 LS
"Ls" is limited slip. so you have 3.73's limited slip,just making sure..
37- 3.73
3L- 3.73 LS
41- 4.10
4N- 4.10 LS
43- 4.30
4L- 4.30 LS
48- 4.88
8L- 4.88 LS
53- 5.38
5L- 5.38 LS
"Ls" is limited slip. so you have 3.73's limited slip,just making sure..
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Senior User
Joined: May 2005
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From: Atlanta GA
I have had the same problem with my '05. And after I started using the Bully-Dog Triple dog the problem showes up every day. Nothing more embarrassing then wanting to have some fun and laying into a powerbrake and after the smoke clears just the "old-school, one wheel peel" Now that sucks!!!!!!
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Senior User
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From: California
Raptor131- Thank you for the info. It is really great to have this site to learn from and have people willing to help.
Tdusseau- yea, that's what I'm talking about... I ran with my friend who drives a Chevy and has never had that problem.
Tdusseau- yea, that's what I'm talking about... I ran with my friend who drives a Chevy and has never had that problem.
Junior User
Joined: May 2006
Posts: 67
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From: Durango, CO
Originally Posted by hschiro
I have noticed lately that it seems like my diff is not locking up both sides. When I pull my boat out of water the right wheel spins and I have to put it into 4x4 mode to pull the boat out (it is only a 18 ft. boat...). I did a power brake test and only the right side went spinning. I took it to the dealer and they said everything is fine and that they were able to do a power brake test and both wheels locked up. They also mentions that they put it in the air and rotated one tire and that the other counter-rotated. Is there really a problem or is it just my imagination?
https://www.ford-trucks.com/forums/s...d.php?t=510104
There is some good information on modifying the amount of additive in the rear end that may help. I had the same issues and questions, I couldn't get up my old driveway if one side was wet. Bottom line is Ford's LS is not that tight, nothing like what someone who drives a Jeep or HP car with LS would expect. I had the same thng you experienced, Ford tech' said it's just as it's supposed to be. I'm going to try changing the rear end lube per the previous post then look into aftermarket if that doesn't bring it up to par. Meanwhile be glad the ESOF works in those cases
Last edited by daveshan; Aug 4, 2006 at 08:15 AM.
Its Comin Right for us!
Joined: Feb 2005
Posts: 12,206
Likes: 2,662
From: GA
theres not much you can do, these are very loose l/s's....some people add another clutch to the packs to tigthen them up....thats about all you can do....unless you go aftermarket l/s or selectable locker...or auto locker like a detroit no spin