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can i use a non-oem PS pump?

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Old 12-20-2004 | 10:43 PM
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rolf morrow
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Default can i use a non-oem PS pump?

can i replace a power steering pump with a generic brand
pump that doesn't cost 250 bucks,including core?
if anyone has used a brand x part and the car had any problems
could you tell me why?
i see such a different price range on different porsche parts
just because it doesnt say porsche or some other german name
does that really mean it is a garbage part?or is it just a status thing.
if it actually works the same,why not?
any help or prior experience?
rolf morrow
83 944
86 951
98 z3
Old 12-20-2004 | 10:56 PM
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Why not just rebuild your pump? It only takes about 15min. and then its good as new.

http://www.rennbay.com/pump.html
Old 12-20-2004 | 10:57 PM
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Rolf,

Don't know whats up with your pump, but I current pump was rebuilt using a kit from Travis at Rennbay. Alternatively the last pump I picked up was used, $50 including shipping, from Todd on this board.

Martin
Old 12-21-2004 | 09:43 PM
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Default ps pump

this power steering is squealing and chattering at startup and hard to manuver
also at low rpm,also it does not appear to be leaking at the pump
because the resevior stays at the same level.
i saw the rebuild kits at rennbay and was under the assumption
that those are for leaking pumps.
the pump on my 951 gets very hot to the touch,so i thought with those
symptoms together the pump had to be going bye-bye.
i rather buy a kit then a new pump,if that sounds logical.
what do you guys think?
rolf morrow
83 944
86 951
Old 12-21-2004 | 09:56 PM
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It's probably worth attempting a rebuild for $15 bucks....what do you have to loose? Travis might have more experience of the actual problem though.
Old 12-21-2004 | 10:57 PM
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you are probably right.
i will contact travis and ask for help.
maybe a kit will work instead of getting new pump .
thanks for reply.
rolf morrow
83 944
86 951
Old 12-21-2004 | 11:44 PM
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What happens is the pump starts leaking but not on the pressure side. It can leak on the intake side and suck air into it. When this happens the air is forced through the pump and gets squished. This causes the pump/rack to create a harmonic vibration witch puts a lot of wear on the internal pieces. The part that takes the brunt of this vibration is the internal pressure relief valve springs inside the rack.
To sum it up, air in the system causes heat and parts to eventually fail. Keep the air out of the system. Rebuild the pump and check the hose connections on the intake side.
Old 12-22-2004 | 09:44 PM
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thanks for information and reply.
looks like i will be contacting rennbay for ps kit.
worth a shot.
rolf morrow



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