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

Reply
 
LinkBack Thread Tools Display Modes
Old 11-28-2010, 04:55 PM   #1
Registered User
 
Join Date: May 2010
Location: UK
Posts: 874
Clonking from left front wheel / suspension

My '97 Box has developed a bit of a nasty clonk from the left front wheel / suspension, sort of one clonk per rotation of the wheel, clunk, clunk, clunk etc. Currently it only manifests itself when the steering is on full or very, very nearly full lock (and I think only when the steering is turned to the right).

No apparent symptoms when not on full lock, seems fine at low or high speeds. However, the clonk is very nasty when, say, parking the car and using full lock. You can feel it through the steering wheel, hear it, possibly even makes the car jump up a bit, almost like you were driving over something with the left front wheel only.

If it was a FWD car, I would have said CV joint for sure, but obviously there's no drive to the front wheel, so I assume no CV joints up front on the Box. Any thoughts?

__________________
Manual '00 3.2 S Arctic Silver

Last edited by pothole; 11-28-2010 at 05:46 PM.
pothole is offline   Reply With Quote
Old 11-28-2010, 06:09 PM   #2
Registered User
 
DFW02S's Avatar
 
Join Date: Nov 2010
Location: DFW
Posts: 380
Pull the front wheel and see if there's an impact area shown by new wear.
The wheel could have a slight flat spot and it's rubbing the strut tower at a certain turn point.
DFW02S is offline   Reply With Quote
Old 12-06-2010, 08:54 AM   #3
Registered User
 
Join Date: Nov 2008
Location: Missouri
Posts: 112
I have/had a similar issue with my 08 Cayman. When backing out of a parking space at full lock, the car will sometimes make a loud POP or clunk in the front end or even a couple of them. The first time this happened, I thought I had run over a soda can. According to the folks on PPBB, this is fairly common, especially in cold weather. As it was explained to me, it has to do with the alignment and angle of the front wheels, which lift slightly so they aren't totally flat to the ground, then you back up and it causes them to be pulled across the ground in a jerk rather than rolling smoothly. This is worse in cold weather because the tires are less pliable. My mechanic told me the same thing and said it was nothing to worry about. I avoid the problem by trying to avoid turning or backing at full lock in cold weather. So far, nothing has fallen off and no tire or wheel damage.
johnsimion is offline   Reply With Quote
Old 12-06-2010, 04:06 PM   #4
Registered User
 
Steve Tinker's Avatar
 
Join Date: Dec 2008
Location: Queensland, Australia
Posts: 1,522
Have you checked your power steering fluid....?
__________________
2001 Boxster S (triple black). Sleeping easier with LN Engineering/Flat 6 IMS upgrade, low temp thermostat & underspeed pulley.
2001 MV Agusta F4.
Steve Tinker is offline   Reply With Quote
Old 12-06-2010, 04:16 PM   #5
Ray
Registered User
 
Join Date: Jun 2006
Location: Grosse Pointe, MI
Posts: 65
Have your tire shop check the strut mount ... those bearings could be shot.
Ray is offline   Reply With Quote
Old 12-07-2010, 11:20 AM   #6
Registered User
 
Join Date: Nov 2010
Location: Atlanta
Posts: 18
Check your ball joints
AutoAtlanta is offline   Reply With Quote
Old 12-09-2010, 04:40 PM   #7
Registered User
 
Join Date: May 2010
Location: UK
Posts: 874
John Simion is correct - it's the Ackerman effect, an alignment thing that's exacerbated by cold weather and is more prevalent in cars with a light front end.

__________________
Manual '00 3.2 S Arctic Silver
pothole 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 01:20 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, 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