Go Back   986 Forum - for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Performance and Technical chat

LinkBack Thread Tools Display Modes
Old 11-11-2012, 10:17 PM   #1
There Is No Substitute.
rick3000's Avatar
Join Date: May 2007
Location: West Coast
Posts: 3,066
Fan/Clicking Noise Behind Driver?

There is a faint noise coming from behind the driver's seat on my '99 Boxster. If I put the window down I can't hear it, only when the top/windows are up. It's difficult to describe, similar to a fan blade that isn't balanced properly.

I don't believe the left intake has a fan, could it be the timing belt? What else is behind the driver that could be making a clicking noise at perfectly timed intervals?

I'm coming up on my 75k service, but I am wondering if I should be concerned and take it in sooner. Thanks!
1999 Ocean Blue Metallic Boxster - blueboxster.com
rick3000 is offline   Reply With Quote
Old 11-12-2012, 08:36 PM   #2
Join Date: Feb 2012
Location: DFW
Posts: 782
Well, the Boxster does not use a timing belt; it uses a timing chain, so that eliminates that, but there is a drive/serpentine belt. You can try running the engine with the engine cover removed so you can hear it better, and perhaps record the sound.
Kenny Boxster is offline   Reply With Quote
Old 11-13-2012, 06:25 AM   #3
Theoretical propagandist
Eric G's Avatar
Join Date: Dec 2011
Location: Pacific Northwest
Posts: 793
Might be worth the time to remove the engine cover both on top and behind your seat and see if you noise is coming from the cam chain tensioner that sits right behind the drivers seat. It may need replacing. Just a thought...
When life throws you curves, aim for the apex...
Eric G is offline   Reply With Quote
Old 11-13-2012, 07:06 AM   #4
Homeboy981's Avatar
Join Date: Jan 2012
Location: Sherman, TX
Posts: 663
One more thought might be as simple as an idler pulley. Mine started making a 'faint' clicking noise. The faster the engine was revved, the faster the noise.

Hit the pulley with some WD-40 (magical stuff-careful not get any on the belt) and the noise went away. This solution will ONLY BE TEMPORARY but provides time needed to order part, get it delivered and installed.

Either way, your answer lies in opening the bay up and listening more intently to where the noise is coming from….or as KennyBoxster suggested, record it and post it.

Good Luck!
2002 Porsche Boxtser S - Silver & Chrome - Died from IMS failure AFTER IMS was replaced!
Homeboy981 is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -8. The time now is 10:17 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page