my oil pressure is at 5 all the time???
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I think I have figuered out what's going on with the rather large difference in oil pressures. When my '07 997S is at FOT the oil pressure at idle is about 1.5 bar and every once in a while during the exact same conditions it's 3.5 and then pretty much pegged at 5 at any higher rpms. I had the same type situation with my 04 MB coupe's oil pressure and it was traced to a faulty oil pressure sending unit and I'd bet this is exactly what's going on here. Normal oil pressure at idle and at FOT (oil temp +/-220) should be +/- 1.5 not 3.5 or higher. See your dealer and get your sending units replaced and watch what happens...
Last edited by 500; May 25, 2009 at 02:30 PM.
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revisiting an old thread, i just had a light go off with the reading "failure, oil pressure indicator".... my oil pressure reads zero... then the light goes off and tachs out at 5... then the needle bounces back and forth...
called my tech who indicated it must be a faulty sending unit. will update once i get the car into the shop.
called my tech who indicated it must be a faulty sending unit. will update once i get the car into the shop.
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Good news for you (say I w/o knowing what the cost will be...) Tx for posting. This should have been separated from the OP wherein the guy who thought his oil pressure was at 5 all the time realized it just wasn't. 
Last edited by Gpjli; Sep 11, 2010 at 12:54 PM.
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5 bar pressure reading
I had the exact same concern..pressure reading is almost always a 5 bars.
I discussed it with guys who should know, S Car Go (http://scargoracing.ypguides.net/). Their response was "perfectly normal"...regardless of what the manual says it should be. Since then I haven't worried much about it.
I discussed it with guys who should know, S Car Go (http://scargoracing.ypguides.net/). Their response was "perfectly normal"...regardless of what the manual says it should be. Since then I haven't worried much about it.
Registered User
Joined: Apr 2007
Posts: 1,352
From: long island
Rep Power: 87
I had the exact same concern..pressure reading is almost always a 5 bars.
I discussed it with guys who should know, S Car Go (http://scargoracing.ypguides.net/). Their response was "perfectly normal"...regardless of what the manual says it should be. Since then I haven't worried much about it.
I discussed it with guys who should know, S Car Go (http://scargoracing.ypguides.net/). Their response was "perfectly normal"...regardless of what the manual says it should be. Since then I haven't worried much about it.
Last edited by Gpjli; Sep 11, 2010 at 06:58 PM.
It will drop when warm at idle. Porsche spec for that 997 is that at 5k rpms, pressure should be 5 bar.
If it never moves off the very top, it is usually due to the wiring getting knocked off the pressure sender, which does not sound like it is the case in this situation.
If it never moves off the very top, it is usually due to the wiring getting knocked off the pressure sender, which does not sound like it is the case in this situation.
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