pinging/rattling sound at 3100rpm - 986 Forum - The Community for Porsche Boxster & Cayman Owners

boxster1 · 10-17-2009, 05:02 PM

03 Boxster S is getting a sound that I would describe as rattling or maybe pinging coming from the engine at almost exactly 3100rpm. +/- 100 rpm and it runs perfectly smoothly. This has been happening for more than a month now. It is fairly loud. Any ideas what this could be?

Kurt W · 10-17-2009, 06:58 PM

Mine does that exactly as you describe. I think I recall something about vario-cam action at that speed. I do know that mine has made this sound since the day I got it and no ill effects.

Lobo1186 · 10-17-2009, 08:31 PM

i get some chatter at startup sounding similar to what you describe and im not sure the car gets quite up to 3k when i start her but... idk hopefull someone shed some light for ya

clickman · 10-17-2009, 09:31 PM

Engine size?

Lobo1186 · 10-17-2009, 10:47 PM

well i ahve a 2001 2.7 and teh OP im guessing has 3.2 since its a 03 S

boxster1 · 10-18-2009, 01:14 AM

yes, it's a 3.2

blue2000s · 10-18-2009, 05:04 AM

It's most likely to be the engine mount.

clickman · 10-18-2009, 01:33 PM

I would have said motor mount too, but for that it's described as pinging/rattling, when I thought motor mount created vibration. I've got the 2.7 and occasionally, not always, get the seat-of-the-pants vibration at around 3100-3200. I'm at 50k miles, so in theory I'm due for the motor mount.

blue2000s · 10-18-2009, 02:42 PM

Quote:

Originally Posted by clickman

I would have said motor mount too, but for that it's described as pinging/rattling, when I thought motor mount created vibration. I've got the 2.7 and occasionally, not always, get the seat-of-the-pants vibration at around 3100-3200. I'm at 50k miles, so in theory I'm due for the motor mount.

Symptoms depend on how worn the mount is.

boxster1 · 10-20-2009, 10:05 AM

I don't feel any vibration. I only hear the sound and it is fairly loud.