Transmission Clunk 3rd Gear

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hellohithere

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Has anyone noticed a subtle hollow sounding transmission clunk when the Expy shifts into and out of 3rd gear? Also some times can be heard on the 6th to 7th gear shift or shifting from Drive to Reverse.
 

16plati

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Has anyone noticed a subtle hollow sounding transmission clunk when the Expy shifts into and out of 3rd gear? Also some times can be heard on the 6th to 7th gear shift or shifting from Drive to Reverse.
Sounds like u joints failing. May wanna have that checked. 2018-2019 f150s have recalls on sudden abrupt downshifts and this is usually how it starts. Clunking during gear changes. Some guys have even lost the drive shaft on the highway. Not good
 
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hellohithere

hellohithere

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Sounds like u joints failing. May wanna have that checked. 2018-2019 f150s have recalls on sudden abrupt downshifts and this is usually how it starts. Clunking during gear changes. Some guys have even lost the drive shaft on the highway. Not good

It was initially making a loud clunk so I brought it into the dealership to have it checked out. Dealership wrote it is "caused by a slip/stick condition at the transmission output shaft flange/anti-ting ring interface." They lubed and checked torque on parts and then returned the Expedition back to me with much less clunking noise. It still however has a subtle clunking sound as described above. Does this sound like the U joints?
 

16plati

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It was initially making a loud clunk so I brought it into the dealership to have it checked out. Dealership wrote it is "caused by a slip/stick condition at the transmission output shaft flange/anti-ting ring interface." They lubed and checked torque on parts and then returned the Expedition back to me with much less clunking noise. It still however has a subtle clunking sound as described above. Does this sound like the U joints?
Clunking while shifting or accelerating yes
 

AAOO

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Mine does it, gears 3-4-3 somewhere around 15 mph - 20 mph. Happens 80% of the time when I'm nearing my house and coming around a curve on a slight incline. Have a service appointment set for that and a few other things in the near future.
 

Deadman

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Mine doesn't clunk at all, but it does shift much harder into 3rd or 4th on light throttle when its cold in the morning....
 
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hellohithere

hellohithere

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Mine does it, gears 3-4-3 somewhere around 15 mph - 20 mph. Happens 80% of the time when I'm nearing my house and coming around a curve on a slight incline. Have a service appointment set for that and a few other things in the near future.

That sounds very similar to what I have. I took it into the dealer and they lubricated and tightened a portion of the driveshaft and it helped somewhat but the sound is not completely gone. Could you update us when you have the dealer take a look at yours?
 
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hellohithere

hellohithere

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Mine doesn't clunk at all, but it does shift much harder into 3rd or 4th on light throttle when its cold in the morning....

Do you notice anything on your 5th to 6th or 6th to 7th shift on cold mornings?
 

16plati

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Mine does it, gears 3-4-3 somewhere around 15 mph - 20 mph. Happens 80% of the time when I'm nearing my house and coming around a curve on a slight incline. Have a service appointment set for that and a few other things in the near future.
U joints or play in the drive shaft
 

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