Clunk
Thread Starter
|
Senior User
Joined: Sep 2010
Posts: 147
Likes: 1
Clunk
So this just started a few days ago. Whenever I speed up or upshift gears (manual transmission) during acceleration I hear and feel a "clunk". Seems like it is coming from right underneath me but I am not sure. I read something in the PSD forums about a slip yoke problem that is inherent in these trucks. Does this problem go back to the IDI as well? Anyone else had this same thing happen?
Thread Starter
|
Senior User
Joined: Sep 2010
Posts: 147
Likes: 1
no clunk when I kill the engine. No clunk when idling sitting still. No clunk when slowing down. Only when speeding up. Note that when you shift gears that you will slow down a little when you do this so when it goes into the next gear and starts speeding up then I hear the clunk. If I am VERY careful when I releas the clutch so as not to change speed in any way then I can make the clunk go away. I don't think this is clutch or transmission related. Maybe the mounts but if it were the mounts wouldn't i hear the clunk when I was slowing down as well as speeding up?
Post Fiend
Joined: Oct 2007
Posts: 10,501
Likes: 5
From: Faibanks Ak.
U.joint, carrier bearing, slip yoke,or slack in the ring and pinion.
With your motor dead and tranny in nuetral, you should be able to find slack somewhere in the driveline.
Not as common but can be a loose or damaged spring or mount on the rearend.
With your motor dead and tranny in nuetral, you should be able to find slack somewhere in the driveline.
Not as common but can be a loose or damaged spring or mount on the rearend.
Trending Topics
Thread Starter
|
Senior User
Joined: Sep 2010
Posts: 147
Likes: 1
It really feels like it is somewhere after the tranny. I had some drive shaft work done last year and they did a shoddy job (as ussual). I had to take it to another place to get the first fix fixed. I guess this is just part of that mess...
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Fleet Owner
Joined: Jul 2006
Posts: 20,375
Likes: 841
From: Mi'kma'ki
just get under the truck with it off,and in gear,and try turning the drive shaft back and forth,you'll see the problem hopefully in just a couple seconds.most often its just the U-joints.so look at them closely first.
you won't know until you look.
cheap and easy to replace.
you could have had this fixed probably yourself before lunch and less than 20 bucks.
you won't know until you look.
cheap and easy to replace.
you could have had this fixed probably yourself before lunch and less than 20 bucks.
Postmaster
Joined: Apr 2008
Posts: 4,802
Likes: 1
Yup, set the parking brake on and put the trans in neutral - if she's in gear then there will likely be load on the driveline and you won't be able to feel the slack in the U-joint or wherever else it may be.
Thread
Thread Starter
Forum
Replies
Last Post
