986 Forum - The Community for Porsche Boxster & Cayman Owners

986 Forum - The Community for Porsche Boxster & Cayman Owners (http://986forum.com/forums/index.php)
-   Boxster General Discussions (http://986forum.com/forums/forumdisplay.php?f=5)
-   -   2.5L engine whine (http://986forum.com/forums/showthread.php?t=87403)

Marc_986 08-23-2025 04:13 AM

2.5L engine whine
 
With the ignition issue resolved it is time to discuss a sound my car is making. It is a pretty loud whine from the engine compartment. Related to engine RPM. I'm pretty sure I've checked once without the belt and the sound persisted. AOS has been swapped out since (as it was going bad), but that didn't change this noise. Engine starts and pulls ok, no smoke on start-up or driving. Basically it is just this noise.

As it is difficult to describe I found the same or similar noise on U-tube, but unfortunately without any answer to what it was. So input greatly appreciated;

https://youtu.be/sNW5jA-7hP0?feature=shared

Lacostas 08-23-2025 11:46 AM

Quote:

Originally Posted by Marc_986 (Post 668387)
With the ignition issue resolved it is time to discuss a sound my car is making. It is a pretty loud whine from the engine compartment. Related to engine RPM. I'm pretty sure I've checked once without the belt and the sound persisted. AOS has been swapped out since (as it was going bad), but that didn't change this noise. Engine starts and pulls ok, no smoke on start-up or driving. Basically it is just this noise.

As it is difficult to describe I found the same or similar noise on U-tube, but unfortunately without any answer to what it was. So input greatly appreciated;

https://youtu.be/sNW5jA-7hP0?feature=shared

Does it have any CEL or pending codes? Not sure if a standard obd2 reader shows all the codes so maybe try to find an iCarSoft Por or relevant good reader ?

Since you already tested it without the belt, that helps narrow down the possible causes. At first i thought it may be (any) pulley, water pump or anything closely related

Marc_986 08-24-2025 03:08 AM

No lights. I haven't checked for codes yet as I don't yet have a reader for this car. Guess that a durametric of PIWIS clone might be the way to go.

I'll retest the belt off as it has at least been two years. Confident it didn't change anything, but better to be sure. Will take a few days as I have the alignment scheduled for Tuesday and want to do that first. In the meantime, very open to experience from you all :)

pilot4fn 08-24-2025 03:31 AM

Sounds kind of similar like if you do not have enough power steering fluid in the resevoir.


All times are GMT -8. The time now is 07:39 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2025 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website