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

Another Transmission Question

Thread Tools
 
Search this Thread
 
Old Nov 24, 2008 | 09:20 AM
  #16  
brian42's Avatar
brian42
Lead Driver
Veteran: Navy
15 Year Member
Community Favorite
Joined: Dec 2006
Posts: 7,093
Likes: 147
From: San Diego, CA
Originally Posted by Mark Kovalsky
It could be slop in the rear end. It might be worth your time to remove the driveshaft and inspect the U-joints and grease the slip yoke.
When I first got my truck last year (146K on the odometer) I was feeling a little clunk-clunk every time I started from a dead stop (or a very ssslllooowww rolling stop from a light). It felt like a tranny hesitation but I couldn't find anything wrong. I found a post that described this and recommended that I grease the slip yoke. I marked the shafts for alignment, disassembled at the u-joint (fwd or aft depends on your year, I think aft for the earlier years IIRC). There was very little play in the shafts and the u-joints were solid. I greased the slip yoke (there was almost none in there before I added grease) and the problem was gone.

It is worth a try. I also thought I was in for the beginning of the end for my transmission and wallet and all it took was an hour and some grease. Needless to say it was well the try before driving to John Wood. Now I grease the slip yoke once a year whether it needs it or not (as the shaft moves inside it pushes the grease out of the grooves into the rear expansion area) to keep it from happening again.

It's worth a try IMO. At least you can rule out any driveline chatter. Best of luck and hope this helps.
 
Reply
Old Nov 24, 2008 | 11:13 AM
  #17  
SpringerPop's Avatar
SpringerPop
Hotshot
Veteran: Air Force
20 Year Member
Liked
Community Favorite
Joined: Jan 2002
Posts: 17,988
Likes: 207
From: La La Land
Club FTE Silver Member

Grease that slip joint.

It works wonders!

Pop
 
Reply
Old Nov 24, 2008 | 03:34 PM
  #18  
Markadeck's Avatar
Markadeck
Thread Starter
|
Gone, but not forgotten
Joined: Oct 2005
Posts: 5,026
Likes: 2
From: Charlotte-Fairbanks-Bflo
Originally Posted by SpringerPop
Grease that slip joint.

It works wonders!

Pop
It's been less than a year since I had the driveshaft balanced and the slip yoke lubed. But when I get back to Charlotte I promise I will do it again. It is the strangest problem. It only does it about half the time, does not seem to do it at all if I leave the dead stop with a little authority instead of my usual fuel sipping practice of slowly accelerating to speed. I am at a loss really. If it is ring and pinion slop as it looks like it may be, you would think there would be a clunk, or a sort of parts slamming together????
 
Reply
Old Nov 24, 2008 | 03:56 PM
  #19  
rbaker6336's Avatar
rbaker6336
Post Fiend
Joined: Feb 2007
Posts: 7,191
Likes: 4
From: Blairsville,Ga
I think if it were excessive ring and pinion backlash you would be getting considerable gear noise
 
Reply
Old Nov 24, 2008 | 04:00 PM
  #20  
Markadeck's Avatar
Markadeck
Thread Starter
|
Gone, but not forgotten
Joined: Oct 2005
Posts: 5,026
Likes: 2
From: Charlotte-Fairbanks-Bflo
Originally Posted by rbaker6336
I think if it were excessive ring and pinion backlash you would be getting considerable gear noise
You'd certainly think so, along with a clunk when changing from forward to reverse.
 
Reply
Old Nov 24, 2008 | 04:46 PM
  #21  
brian42's Avatar
brian42
Lead Driver
Veteran: Navy
15 Year Member
Community Favorite
Joined: Dec 2006
Posts: 7,093
Likes: 147
From: San Diego, CA
Originally Posted by Markadeck
It only does it about half the time, does not seem to do it at all if I leave the dead stop with a little authority instead of my usual fuel sipping practice of slowly accelerating to speed.
Sounds exactly like what I was feeling. It's been a year since you greased your slip yoke so I wouldn't be surprised if most of the grease has been pushed from between the splines now.
 
Reply




All times are GMT -5. The time now is 11:26 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