rear differential question - Ford Powerstroke Diesel Forum
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post #1 of 8 Old 03-30-2012, 04:17 PM Thread Starter
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rear differential question

hey guys i have a quick question to ask, just bought an 08 f250 psd and i'm trying to figure out whether or not it has a limited slip or just a one tire fire. did a burn out the other day and it only lit one tire up but when i launched it, it spun both tires. any help would be great!
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post #2 of 8 Old 03-30-2012, 04:17 PM Thread Starter
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it is two wheel drive also
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post #3 of 8 Old 03-31-2012, 02:49 PM
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sure it has a lim slip, the brakes prob held the left side tire till you launched

2008 F250 sd ps cc sb
stock for now, in need of mpg!!
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post #4 of 8 Old 04-01-2012, 07:56 PM
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Ford axle codes I think you can find the axle code on the door tag as well, but I'm not sure if its the same code, but I would assume so. You may or may not have one, they weren't std. The LS in these truck are know for being worthless, Also remember its not a full locker so don't expect the it to act like one.

2008 (Job 1) F250 King ranch 4x4, snow plow prep package with 2.5 level. Black Maxx, B&W Diehard platinums. Dieselsite coolant and transmission filters, NCU Motorsports/amsoil oil bypass kit. Turbo blankets, 5.5 PMF traction
Please collect and message me Shell, Rotella oil cap codes aka "my miles matter" I'm trying to save up for a hat or something.

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post #5 of 8 Old 04-02-2012, 11:05 AM
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Fords limited slip sucks.....sometimes it works, sometimes it doesn't. Total joke. I have mine checked every time my truck goes in for service....I do it just to make sure there is documentation, so when it fails, Ford, can fix it.
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post #6 of 8 Old 04-05-2012, 01:09 PM Thread Starter
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gotcha okay i'll get the axle code and check it out, thanks for the help guys!
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post #7 of 8 Old 04-05-2012, 01:13 PM Thread Starter
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well according to the door code i have 4.10 ratio gears and its a non-limited slip. thanks again!
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post #8 of 8 Old 04-06-2012, 05:41 AM
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Quote:
Originally Posted by turbo kidd View Post
Fords limited slip sucks.....sometimes it works, sometimes it doesn't. Total joke. I have mine checked every time my truck goes in for service....I do it just to make sure there is documentation, so when it fails, Ford, can fix it.
Question what is the dealer checking? is he actually pulling the cover and measureing the clutch discs? Or just checking that the fluid is correct?

Fords LS unit is a clutch type, they normally need to be replaced aroudn 25-30K miles. Beat on it and they need to be done sooner. They have used the same design since I can't remember when. It is not a lockup type, and depending on loading one wheel will slip while the other tries to get power.

Tru-trac is a better unit to upgrade to as it uses gears not clutches. The 450/550 D110 are Gear type LS units. I have 78K on my rig and the LS unit works just fine, but then again I do not drag race the machine just work it for what she is. Occasionally I can spin one wheel but the other will generally apply some power to the ground and get me moving.

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