Grumble at various speeds and gears - Ford Powerstroke Diesel Forum
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post #1 of 2 Old 01-23-2014, 09:02 AM Thread Starter Rookie
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Grumble at various speeds and gears

Ford fans
I am sort of new to this forum. Tried to review previous posts with no luck.

If I missed one please guide me to it.

I have a 2000 Ford F350 with 6 speed manual and 4x4 on the dash.

Immediately after I turn truck on in idle, when down shifting to slow down, and if I step on brake pedal while slowly letting off clutch I hear a very aggressive grumble like driving over rumble strip.

I thought at first this might be a bad turbo bearing but decided it didn't match turbo spool up.

Then I thought maybe a carrier bearing but noise is present at idle at a stand still so crossed that out.

Thought maybe a pilot bushing or clutch release bearing but seeing how clutch in or out doesn't really change the grumble I figured it ain't these.


If this is the case anyone know a good t-case and tranny pull guide I can use to get the tranny out.

Please help

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post #2 of 2 Old 01-23-2014, 10:58 AM
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Before you think it's something big, it's possible it's something small. First thing I would do is to go out and engage the front hubs manually (any time I hear someone say "rumble strips" I think this) you don't need 4WD, just so the axles are turning with the tire.

Drive around and see if you hear it again. If you Don't, all you probably need is the Needle Bearings in the front hubs. A cheap & easy fix and pretty common
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