Go Back   986 Forum - for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Boxster General Discussions

Reply
 
LinkBack Thread Tools Display Modes
Old 04-17-2010, 10:36 AM   #1
Registered User
 
jcb986's Avatar
 
Join Date: Apr 2009
Location: Orlando
Posts: 1,266
High Pitch Squeal From Engine with Belts Off

I replaced my serpentine belt back a few months ago and I started getting a low pitch chirp that now has tun into a high pitch squeal. I disconnected the belt and started the engine because the squeal was hard to pin point. With the belt off and the engine running I have the squeal. Now, it only starts after the engine has run for more than 20 minutes and it has reached operating temperature. The odd thing is when you race the engine up the squeal will disappear and even quit. Slowly returning as a chirp, quickly into a squeal. Any thoughts.

__________________
http://i768.photobucket.com/albums/x...6/PC120055.jpg

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 04-17-2010, 11:13 AM   #2
Registered User
 
Join Date: Feb 2009
Location: Buffalo NY
Posts: 828
Just for the hell of it you should check every spark plug torque, it solved my strange noise and two were loose.
eightsandaces is offline   Reply With Quote
Old 04-17-2010, 11:20 AM   #3
Registered User
 
jcb986's Avatar
 
Join Date: Apr 2009
Location: Orlando
Posts: 1,266
Quote:
Originally Posted by eightsandaces
Just for the hell of it you should check every spark plug torque, it solved my strange noise and two were loose.
Problem is, it starts after the engine has been running for over 20 minutes. The spark plugs chirp when loose not squeal to high heaven. Thanks for the input...I had replaced a few tubes not more than 200 miles ago so I know the spark plugs are tight.
__________________
http://i768.photobucket.com/albums/x...6/PC120055.jpg

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 04-17-2010, 11:52 AM   #4
Track rat
 
Topless's Avatar
 
Join Date: Nov 2006
Location: Cucamonga CA
Posts: 3,687
Garage
Best guess without hearing it... worn timing chain tensioner guides. A common problem.
__________________
2009 Cayman 2.9L PDK (with a few tweaks)
PCA-GPX Chief Driving Instructor
Topless is offline   Reply With Quote
Old 04-17-2010, 12:24 PM   #5
Registered User
 
Join Date: Feb 2009
Location: Buffalo NY
Posts: 828
what is the mileage?
eightsandaces is offline   Reply With Quote
Old 04-17-2010, 02:52 PM   #6
Registered User
 
jcb986's Avatar
 
Join Date: Apr 2009
Location: Orlando
Posts: 1,266
Quote:
Originally Posted by eightsandaces
what is the mileage?

2000S...3.2 ltr...tip...68,000
__________________
http://i768.photobucket.com/albums/x...6/PC120055.jpg

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 04-18-2010, 05:18 AM   #7
Registered User
 
Join Date: Mar 2008
Location: Atlanta
Posts: 60
Garage
AOS needs replacing.
mmontfort is offline   Reply With Quote
Old 04-18-2010, 06:58 AM   #8
Registered User
 
jcb986's Avatar
 
Join Date: Apr 2009
Location: Orlando
Posts: 1,266
Yes, I just ran the engine until it started squealing...loosen the oil cap up and it stopped. Looks like I will replace here soon, was going to change the oil and install a new fuel filter, so I will do this all at once. Thanks.
__________________
http://i768.photobucket.com/albums/x...6/PC120055.jpg

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 04-20-2010, 06:35 PM   #9
Registered User
 
deliriousga's Avatar
 
Join Date: Jun 2005
Location: USA!!
Posts: 1,159
When you replace the AOS, replace the hose that connects to it (not the little bellows that's on the bottom of the separator). Mine had a small crack in it and that is what caused the squeal after I replaced the bad AOS .
__________________
1987 928S4 Silver Metallic (980)/Navy (TP) 5-Speed
2000 Boxster Speed Yellow/Black 5-Speed
1966 Wife White/Brown Top
1986 Daughter White/Brown Top (Sold!)
1992 Daughter White/Blonde Top
deliriousga is offline   Reply With Quote
Old 04-21-2010, 04:09 PM   #10
Registered User
 
jcb986's Avatar
 
Join Date: Apr 2009
Location: Orlando
Posts: 1,266
Quote:
Originally Posted by deliriousga
When you replace the AOS, replace the hose that connects to it (not the little bellows that's on the bottom of the separator). Mine had a small crack in it and that is what caused the squeal after I replaced the bad AOS .
I purchased everything but bottom hose. Seems no one changes it.
__________________
http://i768.photobucket.com/albums/x...6/PC120055.jpg

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 04-28-2010, 04:36 PM   #11
Registered User
 
Join Date: Jun 2008
Location: Georgia
Posts: 7
Air/Oil Separator

This definately sounds like the problem I had a few months ago. It turnred out to be the Air/Oil Separator. If you let it go too far you will see more smoke comming from your exhaust. It is always a good idea to replace all associated hoses while you have it open.
Not a big expense to fix.

__________________
Kochman
Kochman is offline   Reply With Quote
Reply


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 02:32 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2021, 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