Notices
1999 - 2003 7.3L Power Stroke Diesel  
Sponsored by:
Sponsored by: DP Tuner

Rear end chatter

Thread Tools
 
Search this Thread
 
Old Jun 1, 2007 | 07:35 PM
  #1  
Ron Chichelli's Avatar
Ron Chichelli
Thread Starter
|
New User
Joined: Sep 2006
Posts: 20
Likes: 0
From: Spencerport NY
Rear end chatter

I have a 1999 F350 duelly 7.3 with limited slip rear end. I only have 26000 miles on it.
I changed the rear end fluid and added the ford additive.
The rear end still chatters a little when I turn a corner and step on the gas.
Is this normal?
 
Reply
Old Jun 1, 2007 | 07:54 PM
  #2  
Uzumati's Avatar
Uzumati
Post Fiend
Joined: Jun 2006
Posts: 5,497
Likes: 7
From: Central, Al
Sounds like you need a little more additive, what weight oil did you put in?
 
Reply
Old Jun 1, 2007 | 08:01 PM
  #3  
Ron Chichelli's Avatar
Ron Chichelli
Thread Starter
|
New User
Joined: Sep 2006
Posts: 20
Likes: 0
From: Spencerport NY
I used ford recommended, not sure of weight
 
Reply
Old Jun 1, 2007 | 10:28 PM
  #4  
miker67's Avatar
miker67
Elder User
Joined: Oct 2004
Posts: 855
Likes: 5
Check out this link, discusses how much friction modifier to add. You should do it soon, because the clutches in the limited slip will get torn up quick without it.
https://www.ford-trucks.com/forums/4...ction+modifier
 
Reply
Old Jun 1, 2007 | 10:36 PM
  #5  
Tenn01PSD350's Avatar
Tenn01PSD350
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
Originally Posted by Ron Chichelli
I have a 1999 F350 duelly 7.3 with limited slip rear end. I only have 26000 miles on it.
I changed the rear end fluid and added the ford additive.
The rear end still chatters a little when I turn a corner and step on the gas.
Is this normal?
Sounds like mine. Wow, only 26k. I am closing in on 60k and mine has done this. I replaced fluid with royal purple, and while better, it is not gone. I am curious about the response to this. AFAIK it is possible to go too far with additive and have a limited grip diff. The royal purple is not supposed to require any additive AKA friction modifier.
 
Reply




All times are GMT -5. The time now is 10:38 PM.

story-0
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.

By Verdad Gallardo | 2026-06-12 11:01:55


VIEW MORE
story-1
Top 10 Fords at 2026 Carlisle Ford Nationals

Slideshow: Top 10 Fords at 2026 Ford Nationals

By Joe Kucinski | 2026-06-09 11:10:08


VIEW MORE
story-2
3 Best / 3 Worst Parts of Modern Ford Ownership

Based on years of owning multiple modern Ford products.

By Brett Foote | 2026-06-09 10:53:36


VIEW MORE
story-3
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

SPONSORED: From muddy boots to rain-soaked cargo, these upgrades address some of the most common frustrations Ford truck owners face every day.

By Pouria Savadkouei | 2026-06-08 18:50:34


VIEW MORE
story-4
Every 2026 Ford Engine Explained

Here's everything you need to know about every Ford engine available for the 2026 model year.

By Brett Foote | 2026-06-05 12:58:01


VIEW MORE
story-5
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-6
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-7
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-06-03 11:38:36


VIEW MORE
story-8
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-9
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE