996 Turbo / GT2 Turbo discussion on previous model 2000-2005 Porsche 911 Twin Turbo and 911 GT2.

Whining Sound

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  #1  
Old 05-28-2007, 11:23 PM
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Whining Sound

There is a filler cap to the left of the engine oil filler cap. The cap is labeled "only hydraulicoil, pentosin CHF11s". This unit sometimes makes a high pitched whining sound which seems to go away when you depress the clutch? Is this the power steering pump? How is it related to the clutch?

Additionally, the clutch pedal seems stiffer than usual when the engine is off, and gets normal once the engine is turned on. I've heard of hydraulic clutches, but not hydraulic power assist.

Markski has a picture that shows the small black filler cap here


The oil seems to be low....

A search on yahoo says this: Pentosin CHF 11S is a semi-synthetic power steering/level control fluid used in a broad range of European cars. It is unique in providing precise performance in a wide range of temperatures -40C to 150C (-40ºF to 302ºF).
 

Last edited by Turbo Fanatic; 05-28-2007 at 11:37 PM.
  #2  
Old 05-29-2007, 07:32 AM
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TSB 4897 1/05 Replace power steering reservoir.
 
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Old 05-29-2007, 07:34 AM
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Sounds like the pressure release valve on your power steering pump is faulty. The TSB is 4897. If this is the case you will have the replace the whole power steering fluid pump/resevoir. The noise should be especially bad around 3000 rpm.
 
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Old 05-29-2007, 07:48 AM
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Just had it done... 700$ for the part few hundred for labor =loss

Anyway the only thing whining now is my girlfriend!
 
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Old 05-29-2007, 08:31 AM
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Originally Posted by club411
Just had it done... 700$ for the part few hundred for labor =loss

Anyway the only thing whining now is my girlfriend!
I paid $550 or so for the part from Suncoast
 
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Old 05-29-2007, 11:05 AM
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Originally Posted by kris
I paid $550 or so for the part from Suncoast
Did you replace it yourself? Hard to do?

Jeff
 
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Old 05-29-2007, 11:18 AM
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Originally Posted by MidnighTT
Did you replace it yourself? Hard to do?

Jeff
No my mechanic is doing it. I wonder how hard it is??
 
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Old 05-29-2007, 11:32 AM
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IF the fluid is low maybe it just needs a refill.
 
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  #9  
Old 05-29-2007, 04:47 PM
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Thanks all, I'll check the fluid. I have an easycare plan good till 2011, so it will cost $100 deductible max.

While I'm at it I'm going to ask Speed Gallery to replace my coolant reservoir and maybe get some boost hoses.
 

Last edited by Turbo Fanatic; 05-29-2007 at 05:01 PM.
  #10  
Old 06-02-2007, 05:43 PM
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OK, I added a BIT of fluid and now it's perfectly flush with the "hot" mark on the dipstick with the car hot. Still makes noise though....

Can I run the engine with the cap off?

Is there burping necesary? Or is it time to summon the warranty company?
 
  #11  
Old 06-02-2007, 05:59 PM
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I already posted it was a TSB...what more do you want?
 
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Old 06-02-2007, 08:33 PM
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maybe he doesn;t know what a tsb is, why don't you go over there and fix it.
 
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Old 06-02-2007, 09:08 PM
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tough **** balist????
 
  #14  
Old 06-02-2007, 09:50 PM
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Originally Posted by oak
maybe he doesn;t know what a tsb is, why don't you go over there and fix it.
That is why I was asking smart *ss...you took my post the wrong way...I was wondering if he needed more information
 
  #15  
Old 06-02-2007, 11:13 PM
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Originally Posted by wross996TT
That is why I was asking smart *ss...you took my post the wrong way...I was wondering if he needed more information
ah yuk yuk yuk.
 


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