High Oil Pressure?

[DiscobayJoe]

<SHAME> I have a 2002 Carrera 2 Cab that I don't drive nearly as much as I should </SHAME>

When taking it out for a spin (first time out of the garage all year), I noticed that the oil pressure seemed quite high. It normally starts off high and comes down into the 2-3 range, but I found that unless I was coasting it was pegging the needle at 5. After turning off the engine and poking around, I notice the gauge will register just over 1 with the key on but without the motor running, that makes me feel a bit better, as i'm guessing it's the gauge, wiring, or sender and not something more difficult

I found what i'm pretty sure is the oil pressure sender (top right of motor, two wires facing up, kind of hard to reach behind A/C lines) and they both seem secure.

Is there a process that can confirm a bad sender?

Edited July 12, 2009 by DiscobayJoe

[Loren]

Other than swapping out the sender you would need the Durametric Software, a PST2 or PIWIS tester to confirm operation.

[The Hoth]

Just curious, what is the normal oil pressure reading on the oil pressure gauage when idling and crusing?

When crusing on the highway around 60mph. I have 4.5 bars. When idling, I have 2.5 bars.

In the owner's manual it is quite strange. It said @5,000 rpm the gauge should show 3.5bars. That sounds unrealistically low.

Any idea?

[skandalis447]

Loren,as you might remember i had an oil pressure issue lasr week as well at my brothers 996C2 My02...Neither PIWIS nor Dyrametric have the feature to show oil pressure as a real time value so to check for errors...The only way was to bolt a mechanical gauge where sender is bolted...

when engine is cold pressure is high...idles at 3 bar and shows 5 at cruising...When hot it should idle from 1,3 to 1,6 bar and cruise from 3,8 to 4,5bar...99% or oil pressure problems are related to bad sending units,corroded wires and/or faulty gauge in dashboard...I found it the hard way after spending two days doing everything possible to determine the fault...However you should not worry about high pressure...Engine has a relief valve set at 6bar so there is no way you can break something due to high pressure...so far,no one has comment on a faulty relief valve...