Power Steering Pump Whine - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Power Steering Pump Whine
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Posted by MikeN [Email] (more from MikeN) on Mon, 9 Nov 2020 12:03:29 Share Post by Email
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2000 9-3. Replaced water pump a couple weeks ago and removed the power steering pump and detached the low pressure hose to move the pump out of the way. When I reinstalled everything I checked the PS fluid level and topped it up with Pentosin (I'd only lost a little). When I drove the car I got the expected pump whine indicating air in the system, and I turned the wheel full lock both left and right to help push it out.

After a 20 minute drive everything quieted down and I rechecked the level. For a week or so after I still got noise when I turned a sharp corner first thing in the morning but like before the noise subsided after a few minutes. But now it's been several weeks and quite a few miles and it still has the same symptoms. I've confirmed that it's air causing the problem by noting froth in the reservoir when the noise occurs, and clear fluid when it's quiet. And there are no leaks; the level remains the same.

Any thoughts about what is causing this? I only disconnected one connection and I've double-checked that I tightened the clamp securely

posted by 98.207.11...


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