Groaning when turning from standing start. - Ford Powerstroke Diesel Forum

 
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post #1 of 6 Old 06-10-2009, 06:38 PM Thread Starter
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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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post #2 of 6 Old 06-10-2009, 06:42 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.

Built engine, rods, pushrods, cam, springs. Meth, turbo, injectors, fuel system, oil system. 3 disk billet, billet shafts built trans, 6.0 IC, exhaust, intake. Latter bars, gears, system, tint, HIDs. You know the typical stuff to make a 7.3 get out of its own way... dont brake.
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post #3 of 6 Old 06-10-2009, 06:47 PM Thread Starter
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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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2000 F350 7.3 PSD
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post #4 of 6 Old 06-10-2009, 06:47 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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post #5 of 6 Old 06-10-2009, 06:53 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.

Built engine, rods, pushrods, cam, springs. Meth, turbo, injectors, fuel system, oil system. 3 disk billet, billet shafts built trans, 6.0 IC, exhaust, intake. Latter bars, gears, system, tint, HIDs. You know the typical stuff to make a 7.3 get out of its own way... dont brake.
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post #6 of 6 Old 06-11-2009, 05:25 AM Thread Starter
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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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