Good afternoon!
New to this forum and like most people looking for some advice please....
I have a 2010 F150 4.6 regular cab with an 8ft bed.
It had been sat for about 2 years when I got it so I carried out some routine maintenance and I replaced (deep breath as I remember the money I have spent)
Rotors and pads
2 calipers (one front one rear)
3 wheel Bearings
all 3 universal joints
diff fluid
Transmission fluid and filter
Transmission mount
Tires
and a partridge in a pear tree...
However I still have a judder that comes in at exactly 100kp/h and I cannot for the life of me think what it might be? If you go over that speed it doesnt go away and it still judders if you take your foot off the gas but goes away as soon as it dips below 100.

Any advice would be greatly appreciated
Brindyboy.

 

Happy New Year !
Where do you feel the judder, in the steering wheel or maybe in the driver's seat?
Now,,,,,,,,,,,,,, Was the problem present before the u-joints were replaced ?
If so , need to know that.
If not, Don't know who replaced the u joints, but if the joints are not in phase , it could produce something like I believe you call judder.
Can you help us out with some answers /addl info, thanks.

 

Happy new year to you Hanky
Thank you for getting back to me, I dont know if it was there prior to them being replaced as it was driven very little, it sat for sometime and was taken to the workshop around the corner so never got up enough speed to feel it.
if the U joints are out of phase how do I adjust them or fix that issue?
The judder isnt coming through the steering wheel like a balancing issue it kind of feels like its under the seats, its a rapid vibration and is completely undetectable under 100kp/h.
Best regards

 

If the driveline was assembled incorrectly at the time the joints were replaced, the shaft will need to be removed and the slip joint correctly placed.

 

OK, thats great thank you very much, I will get it in to the workshop next week and check that out.
Really appreciate your input! I will let you how it goes.

 

Good afternoon!
Hope you are all well, I removed the driveshaft and checked the uj's were all level with a inclinometer, all perfect, I did find one of them at the transmission was very tight, got that all freed up but the same problems persists... So frustrating. Not sure where to go from here, don't really want to pay main stealer to diagnose.

Best regards.