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#1
04-29-2005, 06:56 PM
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Moaning and Groaning
Power steering pumps is failing on my 88 560SEL. I have done a search and only found info on power steering rebuild. I have the kit and it looks like it only fixes leaks. My pump does leak, however, it moans non stop when full of fluid and is loader when turning. Anyone know why? The fluid is bit foamy after turning the car off.
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David 1988 560SEL, Green, Chrome wheels. 2000 Suburban, 20" wheels, DVD, wood grain dash (wife's car). 67 Beetle euro, Lots of Empi parts. 69 Beetle conv, 1980s cal look. 
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#2
05-04-2005, 01:55 PM
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Anyone?
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David 1988 560SEL, Green, Chrome wheels. 2000 Suburban, 20" wheels, DVD, wood grain dash (wife's car). 67 Beetle euro, Lots of Empi parts. 69 Beetle conv, 1980s cal look.
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#3
05-04-2005, 02:15 PM
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Have you tried sucking out the fluid with a turkey baster (several times) and refilling with synthetic fluid....
I am trying to think of the cheaper possible fixes first... I once had a q45 that I filled with transmission fluid in the power steering case.... turns out the pump hated that fluid and groaned....replaced with real synthetic (valvoline)power steering fluid...and it behaved normally. Now on the down side...I once owned a 72 mercedes that developed the groan....turned out it was the steering box...very expensive...
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1989 300ce 129k ( facelifted front,updated tail lights, lowered suspension,bilstein sports, lorinser front spoiler, MOMO steering wheel, remus exhaust,stainless steel brake lines). (Gone) 1997 s320 154k (what a ride). Sold with 179k miles. Replaced with Hyundai Equus 1994 e320 Cabriolet 108k  1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it [/SIGPIC]
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#4
05-04-2005, 02:45 PM
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Don't forget the filter as well. Change the fluid and filter before you buy a new pump.
Do not use ATF!!!
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2016 Corvette Stingray 2LT 1969 280SE 2023 Ram 1500 2007 Tiara 3200
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#5
05-04-2005, 02:47 PM
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forgot about the filter....and I just changed one (and the fluid) in the 300ce this weekend....old one was pretty dirty....
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1989 300ce 129k ( facelifted front,updated tail lights, lowered suspension,bilstein sports, lorinser front spoiler, MOMO steering wheel, remus exhaust,stainless steel brake lines). (Gone) 1997 s320 154k (what a ride). Sold with 179k miles. Replaced with Hyundai Equus 1994 e320 Cabriolet 108k 1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it [/SIGPIC]
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#7
05-05-2005, 07:49 AM
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One other thing >> when a fluid is "foamy" > it's usually an indication that the fluid has been overfilled > the excess fluid gets thrashed about > ergo the foam.
more is not necessarily "better" when it comes to fluids [except in beer]
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