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E24 (1976 - 1989)
The BMW 6 Series (E24) was the first variant of the 6 series produced by BMW from 1976 through 1989.

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  #1  
Old 10-22-2013, 11:27 AM
drseth drseth is offline
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Location: Moon, VA
 
Join Date: Sep 2007
Posts: 10
Mein Auto: 1998 Z3 2.8, 1987 L6 635C
Noisy Power Steering Pump When Cold

Hi,

I have had this L6 for almost ten years. Two years ago I finally got tired of hearing the power steering pump moan and groan and bought a new PS pump. Installed it, filled it with new fluid, and it groaned about as bad as the one I took off. I did notice the reservoir has a filter, so I changed that, and it quieted down.

Two days ago I got in the car to go to church on a cool fall day, and the moaning and groaning returned. Does anyone have any suggestions on what to do? I did change the fluid in the reservoir, using Mobil One ATF. It did seem to be quieter after the fluid change.

Seth Anderson
1987 BMW 635CSi L6
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  #2  
Old 10-22-2013, 05:57 PM
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hornhospital hornhospital is offline
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Join Date: Jan 2008
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Mein Auto: 1995 318is / 1993 325is
Change the filter again?
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  #3  
Old 10-23-2013, 09:01 AM
drseth drseth is offline
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Location: Moon, VA
 
Join Date: Sep 2007
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Mein Auto: 1998 Z3 2.8, 1987 L6 635C
No, I didn't have a new one on hand, and the filter I had looked a heck of a lot better than what I removed a couple of years ago. I noticed that the filter did not fit inside of the rim of the piece that holds the filter against the bottom of the reservoir, so I flipped it over and put the spring and clips back on.

Guess I probably ought to get a new filter anyway.
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