2 Problems 04 F350

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May 20, 2009 | 07:14 PM

T C

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Cross-Country

Joined: Oct 2007

Posts: 56

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From: CT

2 Problems 04 F350

My 04 F350 has 89K; getting an intermittent humming noise from the engine usually at idle or in gear at idle. 2nd; when starting from a dead stop turning left or right I'm getting a grinding noise/vibration in the rear axle. I changed the fluid and put the additive in but no change. Any help appreciated.

May 20, 2009 | 07:52 PM

F350-6

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Joined: Mar 2007

Posts: 26,966

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From: Texas

Tell us what engine you have, as well as SRW or DRW truck. Do you have a limited slip rear end, or the regular one? What does the humming noise sound like?

May 20, 2009 | 09:18 PM

Fordfanatic4life

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Joined: Oct 2008

Posts: 3,924

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From: Richmond BC

are ur rear brakes dragging by chance ???

ur calipers or E-brake assembly might be sticking...

humming noise might be a bearing going south.. like a clutch fan or other belt assembly type bearing...have u pulled the serp. belt off and checked the various assemblies for signs of ruff/worn bearings ???

things like the tensioner/power steering/water pump...