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Oil Pressure Suddenly Stopping DANGER=?

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Old 09-21-2021, 02:26 PM
  #31  
Brabus007
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Mine is yellow, it comes on usually when I press o the gas and go over 75mph or so and turns off when I get under 71mph. Around town it hardly ever shows it face only once I hit the freeway. Sometimes I can hit 90mph @ 5.0 bar without it showing up but once I let off the gas pedal it pops up.
Old 09-21-2021, 02:34 PM
  #32  
dime1622
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I'm wondering if we both have it as an issue under low pressure - mine happens not during a corner but once I let off the gas after accelerating out of it, so doesn't happen under high pressure. My guess is it stops sending at all when pressure gets low enough indicating a bad sensor or an electrical gremlin / corroded wires between the sensor and the ECU.
Old 09-21-2021, 02:53 PM
  #33  
Brabus007
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Exactly, this is my thought as well... corroded wires from the heat or ECU gremlin. seems like it's going to be a faulty wire or sensor connectors since so many people been having the same issue. Only wish someone had already pinpoint the problem before having to take in to the dealership were they will take you for a ride 😂
I had read somewhere else that said this....." Well here's the problem - the oil sender unit has two terminals - one for on/off there is oil pressure (this triggers the light) and one for variable resistance (this drives the analog gauge)."
Seems like its a common Porsche problem even with other models.

Old 09-22-2021, 07:16 PM
  #34  
Epcot1988
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Do you guys have a scanner that can give you live data not just codes? When my oil pressure sender was bad, in the live data stream on my Autel scanner I could see that there were actually 3 different oil pressure signals. One was bad/intermittent jumping all over the place, and the other two followed RPM smoothly and were consistent holding at idle. Now I didn't have any readouts or warnings, just no oil pressure indicated as you guys do. As it turns out in my case it was just the sender on the front of the engine. Where the other two signals are coming from, I don't know or didn't research further as I said, the one on the front solved my problem. So, that's why I would check to see what all the senders/pressure signals have to say. There might be something more to it than just a bad sender on the front of the engine if those don't look good.
Old 09-23-2021, 03:39 PM
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No scanner, but glad you were able to figured it out.👍 When you say the "sender" do you mean the sensor in front of the engine? By chance would you happen to have any pictures to show the location of where your issue was? I'm going to have some time this weekend so I figured I could play with it for a bit. Last night on the freeway I went up to 94mph and held the RPM's and had no fault indicator but once the RPM's dropped a bit the message popped up.
This is the fault message I get every so often on the freeway.


🙈
Old 09-23-2021, 06:27 PM
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Old 09-25-2021, 07:21 PM
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Not an expert because I am new to the Pana but my 4.8 gave me the same faults and it was simply low on oil. It seems to consume oil as time passes due to our hot heats and higway driving. Old school rule of thumb is 10psi per 100 rpm but our modern cars do not display pressure numbers unless I just do not know where to look. I topped mine off and all the error messages went away even though the system did not alert me to being low.

Just my 2Cs - cheers Mike.
Old 09-25-2021, 10:50 PM
  #38  
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I had done an oil change on mine thinking the exact same thing, oil levels were on point before, once changed I had the code disappear for half a day 😆
I have heard certain Panies are known to burn through oil a bit more than they should. I try and check my oil level periodically. But glad to hear your oil change took care of that problem👌
Old 09-25-2021, 11:37 PM
  #39  
Epcot1988
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970.1 are expected to use a quart every 1250 to 1000 miles, although the manual says 1.6qt per 620 miles.
The oil level is read from the dash. Just remember that it is one quart from full to low, not one quart per segment on the display.
If I'm not mistaken, the oil pressure is in BAR not PSI. When warmed up I'm getting about 1.5 at idle. That can also be pulled up on the display in the dash separately from the gauge.
Old 09-27-2021, 12:09 PM
  #40  
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Originally Posted by Epcot1988
970.1 are expected to use a quart every 1250 to 1000 miles, although the manual says 1.6qt per 620 miles.
The oil level is read from the dash. Just remember that it is one quart from full to low, not one quart per segment on the display.
If I'm not mistaken, the oil pressure is in BAR not PSI. When warmed up I'm getting about 1.5 at idle. That can also be pulled up on the display in the dash separately from the gauge.
Ill have to play with the displays - thank you, Mike
Old 12-02-2021, 11:03 AM
  #41  
Ed Sev
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I am having the same problem! Anybody fixed the issue? Pretty annoying!
Old 03-28-2022, 09:53 AM
  #42  
JohanvdWalt
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I have this problem on my 2011 Panamera 4S.
I'm currently using it as my daily while on holiday so I had some time to experiment.

1) - I drove 1500kms in two days and it only appeared twice - both times directly after full power acceleration - the only times I did hard acceleration as I did a very casual drive at a steady 130km/s all the way'
2) - I then did five test runs and every single time I did a full power acceleration the gauge went to zero and the warning came on.
3) - I then noted, when I accelerated at about 60% of full power, the gauge would peg at 5Bar and stay there for ten seconds or so after I let go of the accelerator and just coasted.
4) - This made me think the computer might be shutting the gauge down due to over pressure
5) - Then I connected my iCarsoft PorV3 scanner and took live reading while my wife drove the car
6) - When accelerating at full power the pressure on the scanner went up to 7,5Bar
7) - A few seconds later the warning would come on and the car's gauge go down to zero while the pressure remained above 5bar on the scanner
8) - When she let go of the accelerator and coasted the scanner still showed normal pressures of around 3bar while the gauge was at zero with the warning on.
9) After a few second to a minute the gauge returned to normal pressure (as always) and show the same pressure as the scanner.

This tell me the problem might be over pressure rather than low pressure.
The gauge might be faulty but it show the same pressure as the scanner while operating.
Can someone please advise whether 7.5bar is over pressure or is it acceptable and normal on these cars?
I did buy a replacement pressure sensor and will fit it when I get back home.

I hope this help us to find a solution to this common problem.
Old 03-28-2022, 10:10 AM
  #43  
Epcot1988
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JohanvdWalt,

I would change the sender first and see what happens. I would guess that 7,5bar isn't going to hurt anything.
Old 04-16-2022, 04:11 PM
  #44  
Jan Becker
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Thumbs up PROBLEM SOLVED

Hi everyone,
after having this problem for 2 years and all kinds of 'specialists' weren't able to help me but my new mechanic fixed it!
He replaced the OIL PUMP SOLENOID VALVE and voila - no more warnings! It's part of the oil pump but as you see, you don't need to replace the whole pump as earlier mentioned. The part is $490 and with hours and taxes I paid $1000.
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Old 05-01-2022, 01:18 AM
  #45  
JohanvdWalt
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Originally Posted by JohanvdWalt
I have this problem on my 2011 Panamera 4S.
I'm currently using it as my daily while on holiday so I had some time to experiment.

1) - I drove 1500kms in two days and it only appeared twice - both times directly after full power acceleration - the only times I did hard acceleration as I did a very casual drive at a steady 130km/s all the way'
2) - I then did five test runs and every single time I did a full power acceleration the gauge went to zero and the warning came on.
3) - I then noted, when I accelerated at about 60% of full power, the gauge would peg at 5Bar and stay there for ten seconds or so after I let go of the accelerator and just coasted.
4) - This made me think the computer might be shutting the gauge down due to over pressure
5) - Then I connected my iCarsoft PorV3 scanner and took live reading while my wife drove the car
6) - When accelerating at full power the pressure on the scanner went up to 7,5Bar
7) - A few seconds later the warning would come on and the car's gauge go down to zero while the pressure remained above 5bar on the scanner
8) - When she let go of the accelerator and coasted the scanner still showed normal pressures of around 3bar while the gauge was at zero with the warning on.
9) After a few second to a minute the gauge returned to normal pressure (as always) and show the same pressure as the scanner.

This tell me the problem might be over pressure rather than low pressure.
The gauge might be faulty but it show the same pressure as the scanner while operating.
Can someone please advise whether 7.5bar is over pressure or is it acceptable and normal on these cars?
I did buy a replacement pressure sensor and will fit it when I get back home.

I hope this help us to find a solution to this common problem.
I replaced the sender unit yesterday, (which was not as hard as I expected) the gauge now show the oil pressure at 5 bar at full revs and the moment the revs drop the pressure on the gauge also drop. It does not stay at 5 bar for a few seconds as it use to.
The oil monitoring failure warning is also gone.

I will see what is does in the next few days and let you know if the problem return.


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