Rumbling at 60mph

superduty4x4 · Nov 18, 2013

Running around in the truck this weekend I noticed a rumbling that was most prevalent at 60mph. It's barely noticeable but it is there, nothing like a bad u-joint does. I replaced the clutch about 1k miles ago and at that time all the u-joints were fine. Front wheel bearings have been recently repacked. It seems to be coming from the front end but who knows. Possibly a bad rear wheel bearing? Any other ideas?

joebob3093 · Nov 18, 2013

Carrier bearing?

superduty4x4 · Nov 19, 2013

joebob3093 said:
Carrier bearing?

Don't think so. That usually makes the whole truck shake from what I've seen, this is just a rumbling in the floor boards.

sootie · Nov 19, 2013

rear end?
undo the rear u-joint and check for pinion play. or else jack the back end up and use a doctors stethoscope to isolate the noise

superduty4x4 · Nov 25, 2013

sootie said:
rear end?
undo the rear u-joint and check for pinion play. or else jack the back end up and use a doctors stethoscope to isolate the noise

That's kind of what I'm afraid of... if it is the rear end (or heck, could even be the front end) I might just start hunting for a set of 05+ SD axles.

sootie · Nov 25, 2013

superduty4x4 said:
That's kind of what I'm afraid of... if it is the rear end (or heck, could even be the front end) I might just start hunting for a set of 05+ SD axles.

look no further. i have a set of 05 axles sitting here on a rolled truck. i can also make you a deal if you need additional suspension parts to make them work. pm me if you want.

superduty4x4 · Nov 25, 2013

PM coming!

Tom S · Nov 26, 2013

I think I would recheck those front wheel bearings and if you have locking hubs make sure they are free.

superduty4x4 · Nov 27, 2013

Tom S said:
I think I would recheck those front wheel bearings and if you have locking hubs make sure they are free.

Front wheel bearings were fully packed (both the little one up front and the big one in the back of the hub) within 100 miles. Locking hubs seem to be functioning properly but I'll check them again.

TERRCO · Nov 28, 2013

X2 on the hubs. Are you sure your not in 4H?

superduty4x4 · Dec 2, 2013

Fawkin kids... one of them must have locked my hubs in at some point. I haven't used 4WD since last winter and when I went out to check this weekend guess what... both hubs were locked in. Didn't get it up to over 60 but the problem seems to have gone away :doh: