Power steering pump: flush or replace?

Discussion in 'Stock Suspension + Bolt On Kits' started by Vikingswithwrenches, Feb 22, 2021.

  1. Vikingswithwrenches

    Vikingswithwrenches I'm Awesome

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    On my 97 K1500, "oreo", the steering gets incredibly stiff at low speeds when I'm trying to turn, like pulling into a parking space.

    Before I bought it, the truck had a whine from the pump, I checked it and had no fluid in the reservoir. The guy put some in there and the noise went away. Below ~5 MPH it's hard to turn the wheel.

    So should I flush the system or just replace the pump?
     
    stutaeng likes this.
  2. PlayingWithTBI

    PlayingWithTBI Desert Old Guy

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    If it was run dry, it's probably bypassing internally causing loss of pressure and volume. IMO, time to replace and flush.
     
    SUBURBAN5 likes this.
  3. 10mm Nut

    10mm Nut OBS Enthusiast

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    Never replace a power steering pump until you're forced to do so. Rebuilt pumps that you can get at the parts store are mostly junk. My local OReillys has a 40% return rate on those damn Cardone pumps that everyone sells.

    I'd fix any leaks and flush it and fill it with fresh fluid before I condemned it.
     
  4. Supercharged111

    Supercharged111 I'm Awesome

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    I had a pump that did this. It was an Advance reman and was full of clean fluid. I replaced it with a 140,000 mile virgin GM pump. Were that not an option I happened to have on hand I'd go with a Redhead/Bluetop or T1 rebuild.
     
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  5. Vikingswithwrenches

    Vikingswithwrenches I'm Awesome

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    That's what I'm thinking. I've expired a pump that failed and had to drive the truck home. Don't want to do that again!
     
  6. Vikingswithwrenches

    Vikingswithwrenches I'm Awesome

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    I don't know, quality with a grain of salt. I bought a reman unit years ago and never changed it out till my pump failed on my green K1500 in a parking lot. It's been on that truck for about a year and no problems so far.

    Just with any reman part, there's always a 50/50 chance if it works or not.
     
  7. Vikingswithwrenches

    Vikingswithwrenches I'm Awesome

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    I looked at those and they are WAY out of my budget. A new factory one is about $170 and I don't even want to spend that much. I'll probably just rob the pump off my 4.3 K1500 since I don't really have a transmission for it...
     
  8. Supercharged111

    Supercharged111 I'm Awesome

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    If it's a good pump then go for it. The parts store crap isn't worth it.
     
    Garrett Fulton likes this.
  9. ameadows7

    ameadows7 I'm Awesome

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    I can attest to parts store pumps not being worth a shit. The only consistent problem I've had with my truck is power steering. I thought I finally had it fixed for good, was on vacation in eastern Tennessee a couple weeks ago and went to turn and heard whining, looked in the rear view and saw a huge splotch of fluid on the road. Turns out the pressure line at the back of the pump was loose, so that was an easy fix and I only drove it about 100 feet without fluid. I always carry a parts bin for long trips and I have both steering lines, a new pump, and a p/s pump pulley puller that I bring with me
     
  10. Garrett Fulton

    Garrett Fulton Newbie

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    I had 3 parts store PS pumps that were junk. 2 from Autozone, one from NAPA. All the same problem. The check valve at the back of the pump inside the line fitting was machined wrong and jammed open. This was a '93 C2500 6.5 diesel. The front seal was leaking on the original pump and I rented the pulley removal kit, changed the seal. Still working fine and that was 5 yrs. ago. I think all the parts store reman. PS pumps come from the same place. The guys that work there can crossthread a mayonnaise jar.
     
    TexasMaq and east302 like this.

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