' 14 S Whining Noise Matches Engine RPM
02-28-2023, 10:40 PM
#16
Instructor
I appreciate your rambles, and I totally agree. The PO drove it 500 miles/year nearly like clockwork which I can't even fathom. It's a weekend fun car for me, so I drive it at least every other weekend.
I'm wondering if it might be the alternator as well. Recently I've noticed my voltage output 14.8-15.1...it may be crazy, but is my battery just old and the alternator is just working too hard at low rpms and complaining?? Short of that, I agree, the engine cover is coming off this weekend....
I'm wondering if it might be the alternator as well. Recently I've noticed my voltage output 14.8-15.1...it may be crazy, but is my battery just old and the alternator is just working too hard at low rpms and complaining?? Short of that, I agree, the engine cover is coming off this weekend....
03-02-2023, 12:12 PM
#17
Intermediate
Thread Starter
03-02-2023, 02:38 PM
#19
03-02-2023, 05:30 PM
#20
Three Wheelin'
My new AGM battery and new alternator initially charges at 14.8 and quickly drops to 13.8. My old alternator "failed" to full charge mode of 15.1 and never dropped. Cooked the battery. I'm quick to hook up my CTEK.
Did you remove the access panel behind the seats?
Did you remove the access panel behind the seats?
03-05-2023, 10:24 PM
#21
Took a 4 hour trip with my wife today, stuck in traffic for a bit, and had time to pay attention to the noise and play around in and out of gear. Whine most noticeable when cold, with partial throttle in the low gears, and letting off the throttle in gear. When I mentioned to my wife she said she hears it too, first time she noticed it in 7 years!
Don’t think it’s battery related, I swapped out to new agm this year due to age, no difference before and after.
After 40k miles, same noise as when I first got it, and car still drives perfectly, don’t think it’s anything wrong, but I can see how some would find it annoying. I don’t mind it, but easy solution is to nail the throttle!
05-07-2023, 12:38 PM
#22
Did you manage to solve this, or is it still happening?
I went to see a car with 25k for a potential purchase and it had a very similar while, and it kinda put me off and I've been trying to diagnose it to see if it's worrysome.
Here's a video for comparison:
https://www.youtube.com/shorts/lkonlOAUO5c
It's a 2015 Cayman GTS 3.4
I went to see a car with 25k for a potential purchase and it had a very similar while, and it kinda put me off and I've been trying to diagnose it to see if it's worrysome.
Here's a video for comparison:
https://www.youtube.com/shorts/lkonlOAUO5c
It's a 2015 Cayman GTS 3.4
04-29-2024, 02:35 PM
#23
3rd Gear
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I’ve detected the rather peculiar noise you’re referring to, quite distressing once one becomes aware of it.
981 BS, sport mode, 1500-2200RPM. The sound is most noticeable at 2000rpm. Please let me know if you have found any clue to this matter.
981 BS, sport mode, 1500-2200RPM. The sound is most noticeable at 2000rpm. Please let me know if you have found any clue to this matter.
Last edited by FriendlyWombat; 04-29-2024 at 02:40 PM.
04-29-2024, 02:37 PM
#24
I ended up not buying this car, also due to the price, and the one I ended up buying didn’t have the whine.
04-29-2024, 02:51 PM
#25
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So does your new car just not make a whirring sound like this at all?
04-29-2024, 02:57 PM
#26
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So, I've popped down to this local motor shop, proper qualified with their Porsche license, and they've told me it's all rather normal. I changed the motor belt and related parts anyway. But the sound is still apparent.
So does your new car just not make a whirring sound like this at all?
So does your new car just not make a whirring sound like this at all?
I do found this thread. Might be helpful for future readers.
https://rennlist.com/forums/987-foru...-thread-2.html
04-29-2024, 04:34 PM
#27
So, I've popped down to this local motor shop, proper qualified with their Porsche license, and they've told me it's all rather normal. I changed the motor belt and related parts anyway. But the sound is still apparent.
So does your new car just not make a whirring sound like this at all?
So does your new car just not make a whirring sound like this at all?
04-30-2024, 04:35 PM
#28
Racer
It’s normal. Watched many a YouTube video on these cars and everyone has it to varying degrees. I have 43k and have had the car since 30k with some whine. I will change the water pump at some point and we will see if that was the culprit.