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

LinkBack Thread Tools Display Modes
Old 03-24-2010, 08:56 AM   #1
Registered User
Join Date: Jan 2010
Location: Belgium
Posts: 13
boxster funny noise (very clear when turning off the engine)

Hi all,

My car makes a funny sound every 30 seconds or so. When turning off the engine you can hear it quite clearly. Anybody recognizes it? Below is a video on youtube that shows it quite clearly.


Car is boxster 97 2.5.

Last edited by maurice vn; 03-24-2010 at 09:01 AM.
maurice vn is offline   Reply With Quote
Old 03-24-2010, 09:44 AM   #2
Registered User
jcb986's Avatar
Join Date: Apr 2009
Location: Orlando
Posts: 1,266
Very interesting MR. Watson...I, Sherlock thinks it's a noise...........suggestion, have someone turn off the ignition and you listen through the side air vents. If a fan motor is running, it could be the noise of it winding down and going bad. Also, remove cover behind seat to access front engine. Again listen and see if you can hear any noises in this area. FIRST THOUGHT....it also almost sounds like a cd player whirlling down. I had one that a made that kind of noise when you stopped the cd. No, it wasn't in my Boxster.

Old Hippie Young Heart
2000 S/3.2 Liter/Tiptronic/Boxster S Sport Package/Cruise Control/Slate Grey Metallic
Red Special Leather Interior/Red Floor Mats/Red Hand Painted Instrument Dials/Roll Bar/Windstop
Small Carbon Package/Leather Wrap Carbon Wheel/Center Console Exterior Color/Alum Carbon Shift Knob
AM/FM Radio w/CD Player & Changer/Digital Sound Package/18" Turbo Wheels/Wheel Caps w/Colored Crest
jcb986 is offline   Reply With Quote
Old 03-24-2010, 09:58 AM   #3
Registered User
tnoice's Avatar
Join Date: Nov 2008
Location: Champaign, IL
Posts: 355
Sounds like a bilge pump to me. oh wait, does the boxster have a bilge pump?
Lov'n my boxster!

2013 Lexus IS350awd
2007 Toyota FJ Cruiser
2004 Porsche Boxster S
tnoice is offline   Reply With Quote
Old 03-24-2010, 10:22 AM   #4
Registered User
Join Date: Oct 2006
Location: smyrna ga
Posts: 210
sound like either the EVAP (charcoal) canister purge valve or the EVAP canister itself coming from your passenger side front fender.

After driving for awhile my Boxster would make this same sound whenever I shut the it off.

I tried changing the valve but the noise still persisted so I end up changing the canister as well and once I changed that, the 'whine' went away.

Not sure this applies to the MY97 but I'd pull the canister and get the numbers off of it first. I say this because I didn't and just ordered a valve and when that did not fix my problem, I ordered a canister. Apparently the MY99 (which i have) can possibly have one of two different canisters. As luck would have it I ordered the wrong one which did not have the correct attachment fitments or even a hole to insert the purge valve.

Luckily I was able to return it to Sunset and get the correct one, which, as my luck would also have it, had the valve already in it so I ended up wasting $100 on a valve I did not need.
- ian
idheaton is offline   Reply With Quote
Old 03-24-2010, 10:51 AM   #5
Registered User
Join Date: Jan 2010
Location: Belgium
Posts: 13
the noise comes ...

indeed from the passenger front side. So your suggestion is likely the right one. Wonder if the whining as such is a problem. Also, the noise is there periodically (every minute or so) when the engine runs but the engine noise is obviously louder.
maurice vn is offline   Reply With Quote
Old 06-25-2010, 04:20 PM   #6
Registered User
Join Date: Jul 2009
Location: Socal
Posts: 46
Is that what it was? Idheaton - how do you access it, from the front trunk area?
bv1966 is offline   Reply With Quote
Old 06-25-2010, 08:52 PM   #7
Registered User
Join Date: Oct 2006
Location: smyrna ga
Posts: 210
You have to take the passenger side wheel off and remove the fender liner to access the cannister. After that you can see it clearly right under where the gas fill tube is.

- ian
- ian

Last edited by idheaton; 06-25-2010 at 08:56 PM.
idheaton is offline   Reply With Quote
Old 06-26-2010, 02:20 AM   #8
Registered User
Join Date: Jun 2007
Location: Colchester, CT
Posts: 489
Sounds like your pony's are escaping (heard in background).
Seriously though I would have never figured that out so I'm glad you started this thread in case my 09 ever starts making that noise.

1999 986 2.5L, Stock Exhaust (S muffler), EVO Intake, 18" Stock rims (17" during winter), IMS Upgrade, 150k+ miles and counting!
87 944S brought back to life
Dragonwind 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 05:06 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