Grinding Noise

Tiny
WCWCWC16
  • MEMBER
  • 2 POSTS
  • 1988 FORD F-150
  • 6 CYL
  • 2WD
  • MANUAL
  • 147,000 MILES
About a month ago I replaced the steering gear box and power steering pump along with new hoses on my 1988 F-150. Everything worked great until this morning when a loud grinding noise could be heard inside the cab apparently from the power steering pump. The sound only occurs when the steering wheel is turned, however, even the slightest pull on the wheel produces the sound leaving me to believe the new pump is faulty. Am I on the right track or are there other things that could cause this? Is there something I can do to check the pump before pulling it off (as this is incredibly fun on this vehicle, ha).

Thank you for your help.
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Monday, June 17th, 2019 AT 10:43 AM (Merged)
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,749 POSTS
Did you check the power steering fluid level? Usually when the pump whines it is from low fluid or high pressure. Make sure your hoses are not kinked. Hope this helps. Feedback and votes are very much appreciated.
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Monday, June 17th, 2019 AT 10:43 AM (Merged)
Tiny
WCWCWC16
  • MEMBER
  • 2 POSTS
The power steering fluid was the first thing I checked. It was full. The hoses are metal near the gear box and rubber coming up to the pump with no kinks or even bends. I picked up a new pump on warranty and plan to change it out this weekend unless you think it might be something else.

Also, the sound really isn't a whine as much as a growl or grind. It sounds much more severe than a whine.

Thank you for your input!
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Monday, June 17th, 2019 AT 10:43 AM (Merged)
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,749 POSTS
Yeah id probably pop in a new pump. Thats about the only thing that it can be. Let us know if it fixes it.
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Monday, June 17th, 2019 AT 10:43 AM (Merged)
Tiny
98RANGERXLT
  • MEMBER
  • 301 POSTS
Fords tend to have noisy steering try this, turn wheel lock to lock and see if it gets quieter when it does that, that mean theres air in the system if that doesnt do it you may have to live with it.
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Monday, June 17th, 2019 AT 10:43 AM (Merged)
Tiny
LUIS ALCANTAR
  • MEMBER
  • 1 POST
  • 1997 FORD F-150
  • V8
  • 2WD
  • AUTOMATIC
  • 338,000 MILES
Recently, I try to speed up on the freeway and as soon as I am gaining some speed my truck feels as if it's skipping or grinding and I loose the speed. So I let the pedal go and I re- accelarate about 3 to 4 times just to get the speed I need. Each time I do this the same sound accures. Any ideas, I have been told that my tranny is going out.
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Monday, June 17th, 2019 AT 10:43 AM (Merged)
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Hi there,

This is not good, I would not be driving any further than the closest transmission specialist, get a testy & report done, the more you drive the more damage you will be doing, do this ASAP.

Mark (mhpautos)
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Monday, June 17th, 2019 AT 10:43 AM (Merged)

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