Kam992

My carrera 4S
Hi 👋 folks , I have this 992 since a couple of months > 2nd hand 5.000km . I realized the engine makes a horrible noise exactly at 1500 tr/min in Normal mode. After weeks of investigation porsche dubaï says it’s Normal air Intake > anybody with the same crap sound ? Definitely not normal .. I asked them to bring me a car with similar noise. Whatever they say I am 100% sure this is not normal.. opinion are welcome but I feel it will be a long battle for what is obvious for anyone who will drive the car..

Captain P

would help if you can record the noise. Mine makes some mechanical weird sounding noise at low rpm, did not concern me cos warranty and seems to go away at higher speeds.

But I do like the idea of driving another car off the lot to compare.

Kam992

i will definitely record that - that’s the same for me > below or above that 1500 RPM no more noise but that is just not acceptable for 200.000 usd car to hear that literally every few seconds when you change gears… I don’t want to drive it on sport or sport + to avoid that crap sound..

BIGWORM

Sounds like the same low harmonic hum we all hear in normal auto mode. Where light throttle with slight load will cause the exhaust to "honk" a harmonic hum for a second anywhere from 1500-2100 rpm.

Tupper

You must have the infamous crickets.

Common sound, a lot of us have it.

But do share a recording, perhaps it’s something different?

Kam992

OMG > that means I am not the only one … that’s exactly what you describe here.. I don’t find that nice or normal for such a car.. even under warranty.. for me it’s a valid reason to sell.. here are all their answers to explain >
1- Our technical team in factory confirmed this noise is a normal characteristic of the air intake system and it's not a defect.
2- Our technical team in factory confirmed this noise is a normal characteristic of the air intake system and it's not a defect.
3- They even compared with another 911 and identified this is the gas exchange flow noise from the engine .
4- They even spend lot of time to make sure there is no mechanical damage in the components.
5- The noise is bit louder on cabriolets compered to hard top

when I messages the 992 owners group of dubaï > none is facing such noise issues or Normal mode is really quite..

tomorrow I am meeting with technician and management on this .. I won’t be happy with the car with that personally.. it’s like being ok with a breathing issue 98% of the time 🤣 but then being ok when running…

BIGWORM

The crickets is one problem. The low harmonic hum between 1500-2100 is a drone like sound that sounds horrible for the second it lasts is another. You have to be in normal auto mode. Light throttle with slight load. Your exhaust will reverberate a deep low hum for a split second. It's very annoying and another odd character of the 992.

BIGWORM

Wait until you notice the clicking "cricket" like noise. That one drives me nuts. But I have also noticed the low harmonic hum honk in very low RPM that you describe. My dealer is looking into that with mine as we speak. They are also trying to figure out what the low harmonic hum is. Today they told me the think its something in the exhaust. I seem to think it has more to do with PDK normal auto mode holding the gear too long and upshifting too soon.

Bluehighways

Try this . . . . Under lite load, starting to accelerate up a hill at 30-45 mph or accelerating away from normally from a stop light at the same 30-45 mph, between 1,200 and 2,200 rpm (1,500 - 1,700 in particular) I get a rattle from the rear. My description is that, while moderate in volume, it sounds an awful lot like loose lumber does rattling around in the back of a pick-up truck on a bumpy road.
I can get this to repeat itself quite consistently. It's not a once in awhile and hard to replicate noise.
Also, it is particularly noticeable in the "Normal" mode. If I switch to "Sport" or "Sport +" I can eliminate about 90% of the noise and almost, but not quite stop it completely. I can also get exactly the same result if I simply press the "Suspension" toggle switch (see below) on the center console while in "Normal" mode.
I highly suspect that the electronic Motor Mounts and/or the motion of the engine/transmission package when these electronic Motor Mounts are in their relaxed setting is the cause.
Does this match what anyone else is experiencing?
.

eagle1960

https://rennlist.com/forums/992/1185...t-low-rpm.html
This has been discussed in the above thread. I just recently completed taking my C2S to another dealer with the support of the Porsche zone rep. The dealer did a very thorough check of the car and changed out the mootor mounts even though my car was not part of the recall. They could not find any mechanical reason for the resonance and Porsche's formal stance is that it is normal. At least on my car this has to be a "simple" case of exhaust drone. For me , it is not acceptable either. I plan to swap to a Soul Performance valved exhaust in early Oct. to try to get rid of it.

siberian

He lives in Dubai, there are no hills...

siberian

Bluehighways

Quite true. It does make Florida look positively mountainous. However, the Freeway Flyovers in Dubai do make for something of a substitute.
.

Tupper

Ok, I guess either my car doesn’t make that sound or I’ve never heard it because I don’t ever drive in ‘normal’ mode

AlterZgo

I think I have the clicking cricket noise. It happens at freeway speeds and sounds like a high pitched repetitive click or squeak coming from the back. I had a friend sit in back and traced the sound to the rear passenger seatbelt holder. When she pressed on it, the clicking went away. It also completely went away when I inserted the seat belt into the seatbelt holder. Afterwards I was tapping on both pass rear and drivers rear seat belt holders and the driver rear one does not vibrate or click like the pass rear holder does. Right now my fix is just to leave the pass rear seat belt inserted into the holder.

BIGWORM

Listen to this gentlemen... Is this what you guys hear?


2 seconds to 6 seconds, listen for clicking. Like a 10 speed free wheel clicking like criicket like noise. Its much louder in person.

8-14 seconds, in normal auto mode with light throttle slight load between 1500-2100rpm, the exhaust drones so deep it rattles and hums the cab. IS THIS THE SOUND that you posted about?