21RRF150

iTrader: (1)

I don't have that. 4.6l 2v with the 4 speed + overdrive. I don't have any tow/haul option

RajunKajun59

OK, well it ain't that then. Hmmm.

21RRF150

iTrader: (1)

I'll report back once I test it in 4x4

21RRF150

iTrader: (1)

OK its definitely still there in 4wd. Actually I'd say it's worse. Seems in 4wd there's an added howl or groan. Now that I'm really paying attention to it. It's also at low speeds, really pronounced from 20 mph to complete stop. Guys at work are saying to check the gear oil, which I will tomorrow. But there's nothing leaking under there, I definitely checked. Can't be the tires right? These wouldn't give a weird sound like that, at low speed?

Tothemax

I doubt its tires.

I wonder if its coming from your transfer case. Check the fluid in there and see if its burnt.

21RRF150

iTrader: (1)

Thanks. Will def check that asking with the rear end tomorrow.

21RRF150

iTrader: (1)

For the record, I'm trying to record the sound. But it really doesn't come through on the recording

RES4CUE

Do you have the limited slip? You can check door sticker for axle code. Clutch packs could be going out.

21RRF150

iTrader: (1)

Not sure. What is the axle code? I'll go check


Edit: code 26

RajunKajun59

That's open Diff.

Your on the right track checking fluids. I would also check the tranny fluid.

By chance would you have a go pro? You could stick it in various places to record, and where ever it is louder, would be the area to concentrate most on.