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Aug 27, 2012 | 08:15 PM

#16

JT250

Cargo Master

Joined: Jan 2009

Posts: 2,800

Likes: 31

From: OKC, OK

Quote:

Originally Posted by thomabb

Ah, you are on to something here. If your rears are in the air you should be able to spin them. Was this before or after the oil change?

When was the last time you checked your parking brake? The lining can delaminate from the shoe and cause what you are describing.

Is this all the time or only when it is in neutral?

Aug 27, 2012 | 08:22 PM

#17

dothedew192

Tuned

Joined: Jun 2010

Posts: 427

Likes: 1

From: New York

I followed guzzles maintenance website (http://www.guzzle7pt3.com/rdiff.php) when i changed my fluid and his instructions said it took 3 1/2 quarts of synthetic 75w 140 and if its limited slip add 4 oz of ford xl friction modifier. Both of those were exact measurements for my truck. How much fluid and modifier do you think you added?

Aug 27, 2012 | 08:33 PM

#18

Sirpecka

Thread Starter

5th Wheeling

Joined: Sep 2011

Posts: 47

Likes: 0

From: Montrose

Quote:

Originally Posted by dothedew192

I followed guzzles maintenance website (Welcome to guzzle's Rear Differential Maintenance Web Page) when i changed my fluid and his instructions said it took 3 1/2 quarts of synthetic 75w 140 and if its limited slip add 4 oz of ford xl friction modifier. Both of those were exact measurements for my truck. How much fluid and modifier do you think you added?

I took the4 oz friction mod and poured it into my first quart of oil then it took 2 more quartz and then started to overflow it was like 3 quarts and a little bit out f the 4th then it was full

Aug 27, 2012 | 11:17 PM

#19

szotty

Senior User

Joined: Jul 2009

Posts: 336

Likes: 0

i would double check the e brake cus both of mine were hanging up not returning all the way so i had to tear alll apart and clean and grease little bit for them to release all the way

Aug 28, 2012 | 12:54 AM

#20

4inchlovin

Lead Driver

Joined: Nov 2007

Posts: 5,578

Likes: 1

TOTTAL SHOT IN THE DARK...

I have had a similar issue along with a similar issue in my boss's excursion. Peter (Duck Fan) suggested the we pull apart the TPS (Throttle Posistioning Sensor) and clean the contacts with spray. We did this in both vehicles and have not had any issues yet. Just my .02c

Aug 28, 2012 | 02:23 PM

#21

F250_

Hotshot

Joined: Nov 2006

Posts: 11,288

Likes: 269

From: North of Greenville

Quote:

Originally Posted by Sirpecka

Well my rear diff cover is stock cover from AutoZone so it shouldn't be any higher capacity. I filled it until it started dumping out the overflow and then sealed it. I was told to fill it till it spilled out the overflow andcap it off. Is that to much?

Not too much.

Aug 28, 2012 | 02:50 PM

#22

Sirpecka

Thread Starter

5th Wheeling

Joined: Sep 2011

Posts: 47

Likes: 0

From: Montrose

Well heres whats happening now. It has just randomly stopped doing it hahaha. So im not going to worry about it. Im selling the truck now anyway. Im leaving PSD and going back to the old 7.3 IDI. Found a wicked nice 1994 F350 Super Cab Dulley im probably gonna get. I need to get a heavier truck for things im going to be doing in the near future. Im not one for heavily modding engines or anything like that. Ill probablly put a different turbo on it but im tired of working on my PSD all the time. With the IDI parts are cheep and in the end its only like 10 horsepower less then the stock PSD. I love the old style too.

Aug 28, 2012 | 03:21 PM

#23

JT250

Cargo Master

Joined: Jan 2009

Posts: 2,800

Likes: 31

From: OKC, OK

Same topic, kinda, but I jacked up my rear end and spun, spinned? ...whatever....and they turned, freely, not easily. Question is does the limited slip cause them to spin together in the same direction? I guess I am just used to an open diff that spins opposite.