Driveline Vibration. U-Joints, Carrier Bearing, and Output shaft Bushing Replaced.

[da_raabi]

I second the torque converter bolting. I rebuilt my TH400 and put a reman converter on it with a new flexplate. Started getting a nasty vibration at 60+mph. A real vroooommmm vroooooommm vroooooommmm sorta thing. Turns out either the converter or the flexplate are out of balance. I rotated the converter one bolt on the flexplate and the vibration went away... for a while. It finally came back several months later.

My point being that an out-of-balance torque converter can definitely cause some funky vibration. It took me pulling the driveshaft and running the truck up to 70mph in the driveway (the neighbors loved that with a 454 and Super 44s lol) to figure it out. My Dad was dead set it was a bad tire/wheel. Nope. Torque converter.

 

[RedBarnLLC]

I just did purchase this truck. It has had the vibration ever since I have owned it.

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As you asked. Here are photos of the carrier bearing. Is this normal? The driveshaft angle is around 4 Degrees. Output shaft and rear end are both orientated in the same direction at the same 3 or 4 degrees. I didn't know if this sort of bind with the carrier bearing could cause any issues. I've indexed the driveshaft 180 degrees and no change in the vibration. At this point I'm starting to thing it is a combination of driveline with engine vibration.

 

[RedBarnLLC]

I found one loose torque converter bolt when looking at the flex plate. Balancer, motor mounts and trans mount are fine. I think I'm going to see if moving the torque converter over one set of holes does anything. If not then I'll move it to the next set to exhaust my options there.

 

[Frankenchevy]

I had a vibration in a vintage car that I traced down to the torque converter bolted to the flywheel in the wrong place. There are markings where they should mate up and its not hard to check it, just drop the cover.

Can you elaborate on this? My TC and flex plate had no markings that I recall.. installed both new a couple months ago, but haven’t run the truck yet?

 

[bedwards]

This is a '59 Edsel which is similar to a Ford, but there were alignment marks on the flywheel and converter to match up and a hole in the flywheel at that spot to drain the converter. The PO bolted it up 33 degrees off if I remember right. It would bolt up just not balanced. It gave the car/engine an unsettling vibration.

 

[Kim Burke]

First, the carrier bearing is wrong. It should not be in an opposing angle.

Secondly, if you kick it into neutral at highway speed and there’s no noticeable change, the TC/flex plate/fan clutch/motor mounts are not your problem.

 

[RedBarnLLC]

Are you saying it is on backward? It is mounted to a flat crossmember, so I don't know if pulling it off, and turning it around would do anything for it?

 

[RedBarnLLC]

It may look like an opposing angle from the picture but the Truck is jacked up in the air. It is perpendicular with the crossmember it mounts to. Sorry for the confusion.