Bad limited slip? Pics inside, also trutrac questions - Ford Powerstroke Diesel Forum
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post #1 of 20 Old 11-12-2012, 04:49 PM Thread Starter
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Bad limited slip? Pics inside, also trutrac questions

Ok guys I'm haveing a weird issue. First accelerating while turning I'm getting horrible rear axle chatter. On occasion accelerating heavy from a stop and not turning I get a bad chatter. Basically i'm having a difficult time getting my limited slip to unlock, and when it does i'm getting these noises. YES i've changed oil and have added over 8OZ of motorcraft friction modifier alittle at a time. Driveshaft u-joint's I did this month from a high speed vibrations which is gone now. Tonight it snowed and it was alot worse so I pulled my cover off againnn... The only thing i'm finding out of the ordinary is a gap in between my last few clutch packs shown in the pics. Is this normal? Granted my diff is bad I need a parts list and the best place to buy a detroit trutrac.
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Chad

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post #2 of 20 Old 11-12-2012, 05:30 PM
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Quote:
Originally Posted by snopro_03 View Post
Ok guys I'm haveing a weird issue. First accelerating while turning I'm getting horrible rear axle chatter. On occasion accelerating heavy from a stop and not turning I get a bad chatter. Basically i'm having a difficult time getting my limited slip to unlock, and when it does i'm getting these noises. YES i've changed oil and have added over 8OZ of motorcraft friction modifier alittle at a time. Driveshaft u-joint's I did this month from a high speed vibrations which is gone now. Tonight it snowed and it was alot worse so I pulled my cover off againnn... The only thing i'm finding out of the ordinary is a gap in between my last few clutch packs shown in the pics. Is this normal? Granted my diff is bad I need a parts list and the best place to buy a detroit trutrac.
yep needs a rebuild! also get friction modifier 2 bottles. youll be good to go. easy to do!!


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post #3 of 20 Old 11-12-2012, 05:40 PM
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I have a POS True Trac in my rig. I'd rather go through that Trac Lock than use another POS True Trac. Left turn, nail it, locks. Right turn, nail it 1 tire fire. 2 foot it, 2 stripes then right side only.

Yeah, I f'in HATE that $600 POS True Trac in my truck.

Oh yeah, you can buy fluid with friction modifier mixed in.

sent from a dumb guy with a smart phone

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post #4 of 20 Old 11-12-2012, 06:18 PM Thread Starter
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Originally Posted by Karls03 View Post
I have a POS True Trac in my rig. I'd rather go through that Trac Lock than use another POS True Trac. Left turn, nail it, locks. Right turn, nail it 1 tire fire. 2 foot it, 2 stripes then right side only.

Yeah, I f'in HATE that $600 POS True Trac in my truck.

Oh yeah, you can buy fluid with friction modifier mixed in.

sent from a dumb guy with a smart phone

Well your prabably the first person I've come across on here not liking the trutrac. Either way i'm not rebuilding my stocker because I know i'll be doing it again later on.
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Originally Posted by JUGERNAUT View Post
yep needs a rebuild! also get friction modifier 2 bottles. youll be good to go. easy to do!!
Thanks for the Input man.

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post #5 of 20 Old 11-12-2012, 06:32 PM
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how can you tell if u have a limited slip in your truck

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post #6 of 20 Old 11-12-2012, 06:37 PM
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Apply brakes, mash throttle, release brakes, and see how many tire marks you have. That's the easiest, I think and don't quote me but all the superduties came with ls, but they suck. I replaced mine with a detriot locker. Works much better for me as my truck stays on the road more than it does off.

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post #7 of 20 Old 11-12-2012, 06:56 PM
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Love my Trutrac, money well spent when i rebuilt the rear diff. I dont hot rod my truck on the road, but it does have a lot of off road farm experience and i rarely have to get out and lock in the hubs for 4x4, i get around in 2wd pretty good

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post #8 of 20 Old 11-13-2012, 05:16 AM
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Quote:
Originally Posted by Karls03 View Post
I have a POS True Trac in my rig. I'd rather go through that Trac Lock than use another POS True Trac. Left turn, nail it, locks. Right turn, nail it 1 tire fire. 2 foot it, 2 stripes then right side only.

Yeah, I f'in HATE that $600 POS True Trac in my truck.

Oh yeah, you can buy fluid with friction modifier mixed in.

sent from a dumb guy with a smart phone
I know we've talked about this before, and I am pretty happy with my Tru-Trac. I can't say that I have ever experienced what you are describing but that is just my personal experience.
Chad, I wouldn't rebuilt the stocker if I was you. I don't think they handle additional power all that well, especially if you want to upgrade turbos or injectors later. I know you can buy a Tru-Trac on line at 4wheelparts.com and a bunch of other places. If you want to buy from and actual person, Performance Diesel in Green Bay is a detroit distributor. They could help you out with a parts list and some tips on the install.

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post #9 of 20 Old 11-13-2012, 05:48 AM
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Originally Posted by HarvestingInternationally View Post
how can you tell if u have a limited slip in your truck
there will be a tag on the axle one with the gear ratio and the other with fluid try

look for "LS"

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post #10 of 20 Old 11-13-2012, 06:17 AM
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Quote:
Originally Posted by snopro_03 View Post
Well your prabably the first person I've come across on here not liking the trutrac. Either way i'm not rebuilding my stocker because I know i'll be doing it again later on.
Maybe I got the only bad Truetrac ever made, IDK. It's MORE than annoying to me considering the amount of money that I paid for the thing. I should have ponied up the extra $100 for a Detroit Locker. Trust me, while I paid a shop to install it, I verified it was there when I put on my aluminum diff cover.

Quote:
Originally Posted by HarvestingInternationally View Post
how can you tell if u have a limited slip in your truck
Quote:
Originally Posted by ZMANN View Post
there will be a tag on the axle one with the gear ratio and the other with fluid try look for "LS"
There should be an L in the gear ratio number. ie "3L73". If it simply states 3 73, it's a one leg. Also, as previously stated, there should also be a second tag for the use of limited slip lube.

Karl and his 2003 6.0

Barefoot Accelerator Pedal
TRICO Force wiper blades
Yellow Military Aircraft Valve Stem Caps
Offensive "Stick Family" Decal
Big Ol'Honkin 1 1/4" Shank Receiver Hitch


WHAT!?! I was trying to list stuff that everyone else
hasn't already listed for their truck!




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