Groaning when turning from standing start. - Ford Powerstroke Diesel Forum
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Old 06-10-2009, 07:38 PM
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Groaning when turning from standing start.

The subject is a 2WD Excursion with 100K miles.

From a standing start and when turning either Left or Right, there's a groan-like sound coming from the rear of the truck. It doesn't do it if I'm rolling; just from a standing start.

My thoughts are either the rear end, U joints or wheel bearings?

Anybody care to hazard a guess or offer a diagnosis plan? To my knowledge, everything is pretty much original back there.
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Old 06-10-2009, 07:42 PM
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thats wierd. most of us have pickups on here so I doubt many have encountered this issue. Ill bet its just something loose causing a vibration underneith when you put a little load on the powerstearing pump. something to that extent.
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Old 06-10-2009, 07:47 PM
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Wouldn't the PS pump cause a noise in the engine bay instead of the rear of the truck?

What would bad U-joints sound like? Would a dying rear end makes sounds only from a standing start?
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Old 06-10-2009, 07:47 PM
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power steering it resonates through the brake booster on the fire wall and down through the floor board
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Old 06-10-2009, 07:53 PM
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u joints and wheel berrings do not make noise from a stand still. I highly doubt either are warn out at 100k either way. Id look around underneith. possibly loose fuel pump. loose cross member. something loose.
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Old 06-11-2009, 06:25 AM
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Thanks Stroker. That's strange, never would have thought about a PS pump. Now I'm going to test the truck by turning as I start off, then turning before I stop and starting off without touching the steering wheel.

I should notice a difference in the noise if its the PS pump, yes?
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