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

LinkBack Thread Tools Display Modes
Old 10-10-2008, 02:20 PM   #1
Registered User
Join Date: Jan 2007
Location: Texas
Posts: 1,311
Strange noise when I shift from 1st to 2nd...

Recently I have noticed a loud thumping noise coming from the center of the car underneath, right after I shift and put the car into 2nd gear. Itís not my clutch, because itís brand new, only a few months old. And it only seems to do it when the car is first started. After driving around for a while and I reach normal engine temperature, the noise stops. Itís only when I go from 1st to 2nd. And only when the car is cold. Is this some sort of transmission problem? It sounds like a loud thump. I can baby it if I release the clutch really incredibly slow it doesnít do it at all. Motor Mounts perhaps? Or is this normal until the car warms up and trans fluid is circulating? My car has 71k on it. I donít ever remember it doing this before. But I could have been shifting aggressively. Anyone have any ideas?

Last edited by porsche986spyder; 10-13-2008 at 07:51 AM.
porsche986spyder is offline   Reply With Quote
Old 10-25-2009, 08:24 PM   #2
Registered User
Join Date: Dec 2006
Location: Toronto
Posts: 29
you know what, mine does the same when cold...almost as if the gears are grinding. is that what you're experiencing also ?
Joee - Toronto, Canada
2000 Arctic Silver Boxster w/997 GT-3 bumper and skirts
joee76 is offline   Reply With Quote
Old 10-26-2009, 08:28 AM   #3
Registered User
Join Date: Jun 2009
Location: Australia
Posts: 105
It sounds like a torn front engine mount.
Pinarelloman is offline   Reply With Quote
Old 10-26-2009, 08:40 AM   #4
Registered User
Join Date: Jan 2009
Location: Arvada, CO
Posts: 229
My engine thunked around a bit between gear shifts when I first picked it up.
After the mount was changed, the thunking went away.

If you know what engine motions you're looking for, you can remove the engine bay top cover, and check the mount as you drive the car up and down your street.

Its not how fast you go, or how expensive your toys are.
Its all about how big your smile is at the end of the day that truly matters.

'98 Silver Boxster, '08 Ducati 848, '89 Honda Hawk GT, '89 Honda Pacific Coast
Bladecutter is offline   Reply With Quote
Old 10-26-2009, 11:35 AM   #5
Registered User
Join Date: Nov 2006
Location: Bastrop, TX
Posts: 705
front motor mount. buy the upgraded caymen replacement, there is a DIY somewhere on the net for this. You need a floor jack to support the motor and then its easy as pie.
2002 S
Pedro rear stabilizer bar, CF strut braces, Maxspeed headers with 100 cell cats, Fabspeed cat bypass pipes, H&R springs with M030 setup, TRG rear links, EVO air intake, B&M Short shift kit, Raby IMS upgrade, Raby underdrive pulley
jhandy is offline   Reply With Quote
Old 10-26-2009, 12:12 PM   #6
Registered User
Join Date: Mar 2008
Location: Charleston, SC
Posts: 230
I have the same problem, its like a loud thunk and i can downshift into 2nd unless i go up to first. It seems the higher rpm i shift the less the thunk...I just had a 3.6 put in with new motor mounts so i wonder if thats the issue...

BoxsterLewis 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 06:15 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