Front end knocking - Ford Powerstroke Diesel Forum
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post #1 of 6 Old 01-30-2010, 11:20 AM Thread Starter
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Front end knocking

I got a 4wheel drive and when I take off I can hear a knocking sound coming from what sounds like the front left. The knocking gets faster the faster I go until it drowns out at about 15 or 20mph. I'm thinking the U-joint or something. Anybody know how I can check or have some other ideas, thanks for any feedback.

2001 F-250 Ext. cab, 4 wheel drive, brake controler, diablo sport chip, guages, CB, T/C lockup mod, AFE stage II, Wicked Wheel, 4" turbo back w/ muffler, 10k mod
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post #2 of 6 Old 01-30-2010, 09:15 PM
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What kind of hubs do you have?
Did you check wheel bearings for any play?
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post #3 of 6 Old 01-30-2010, 09:19 PM Thread Starter
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Manual hubs, tomorrow morning I'll check for play.

2001 F-250 Ext. cab, 4 wheel drive, brake controler, diablo sport chip, guages, CB, T/C lockup mod, AFE stage II, Wicked Wheel, 4" turbo back w/ muffler, 10k mod
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post #4 of 6 Old 02-01-2010, 09:38 AM
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Mine did that and the issue was a broken driveshaft. It was broken close to where it mounts to the transfer case.
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post #5 of 6 Old 02-01-2010, 10:31 AM
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I would check the wheel bearings too. Usually (but not always) a u-joint is going to give off a squeeking/chattering sound that increases and decreases with vehicle speed.
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post #6 of 6 Old 02-02-2010, 12:48 PM
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I have them same problem I put a new assembly on and its still doing it. But when I do run it in 4 wheel drive its make a poping sound. Then when I unlock the hubs it make a different sounds like I am dragging cans arcross the pavement.

02 F-250 Crew Cab 4x4
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