Weird sounds at idle with fluctuating oil pressure
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Weird sounds at idle with fluctuating oil pressure
Driving a 2011 panamera 3.6L base model.
After changing the radiator and fan belts, within a day the oil pressure sensor was going crazy with light gas causing the sensor to read 5 and get stuck there, subsequently throwing an Oil Pressure Monitoring Fault. Promptly changed the oil pressure sensor near the alternator, replaced the gasket which was leaking badly too. The problem persisted but when oil reaches operating temperature the pressure reads 1.2 to 1.5 bar at idle but goes up to 5 very quickly when accelerating and throws an error for about 1 minute before it works again.
And now a new problem appeared with a howling/moaning/Morse code like sound from the engine at low rpms (1200-2000rpm) and when oil is cold. It's at 0:28 in the video below. Sound disappears after warming up to 80*C. Together with it is a tapping sound that increases in frequency with rpm but also becomes softer as the temperature increases. What could all these problems be? I'm tempted to think the oil pressure problem is separate but I'm not sure
https://youtu.be/09zsb9-gf6A?si=7Ey738dsv-C8n7Oe
After changing the radiator and fan belts, within a day the oil pressure sensor was going crazy with light gas causing the sensor to read 5 and get stuck there, subsequently throwing an Oil Pressure Monitoring Fault. Promptly changed the oil pressure sensor near the alternator, replaced the gasket which was leaking badly too. The problem persisted but when oil reaches operating temperature the pressure reads 1.2 to 1.5 bar at idle but goes up to 5 very quickly when accelerating and throws an error for about 1 minute before it works again.
And now a new problem appeared with a howling/moaning/Morse code like sound from the engine at low rpms (1200-2000rpm) and when oil is cold. It's at 0:28 in the video below. Sound disappears after warming up to 80*C. Together with it is a tapping sound that increases in frequency with rpm but also becomes softer as the temperature increases. What could all these problems be? I'm tempted to think the oil pressure problem is separate but I'm not sure
https://youtu.be/09zsb9-gf6A?si=7Ey738dsv-C8n7Oe
Last edited by Sg970; May 22, 2024 at 01:55 AM. Reason: More details
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