04-26-2015, 08:41 PM
|
#1
|
|
Registered User
Join Date: Apr 2015
Location: Washington, US
Posts: 3
|
Loud Rattling noise coming from engine!! Please Help!!
Hello,
I have a 1997 Porsche Boxster, 6 speed with 61k original miles. About two weeks ago I started hearing a loud rattling sound coming from the engine, the car drives perfectly fine, goes into gear smoothly, when I push the clutch in the sound goes away. I did a little research and thought it was the throwout bearing so I replaced that but the sound is still there. This is my first Porsche and I don't know too much about them so if anyone can give me some advice it would be much appreciated. Thank you so much!! 
|
|
|
|
04-26-2015, 09:09 PM
|
#2
|
|
I am my own mechanic....
Join Date: Feb 2013
Location: Salt Lake City, UT
Posts: 3,433
|
To replace that, the entire transmission comes out. Was a total clutch job done? Sounds like clutch related.
__________________
'04 Boxster S 50 Jahre 550 Spyder Anniversary Special Edition, 851 of 1953, 6-sp, IMS/RMS, GT Metallic silver, cocoa brown leather SOLD to member Broken Linkage.
'08 VW Touareg T-3 wife's car
'13 F150 Super Crew long bed 4x4 w/ Ego Boost
|
|
|
|
|
04-26-2015, 09:13 PM
|
#3
|
|
Registered User
Join Date: Apr 2015
Location: Washington, US
Posts: 3
|
It's kind of pricey to replace the whole clutch at the moment plus I was told the clutch is good, the gears go in perfect, just the throwout bearing needed replacing. Thank you for your reply!
|
|
|
|
|
04-26-2015, 09:37 PM
|
#4
|
|
Custom User Title Here
Join Date: Mar 2012
Location: Ft. Leonard Wood
Posts: 6,163
|
My guesses, in order of ease to fix;
1) exhaust leak or loose heat shield (will increase under load)
2) flywheel, especially if it's a lightweight
3) transmission input shaft bearing (highly unlikely)
My money is on #1 as this is a very common issue with the 986. 
Last edited by particlewave; 04-26-2015 at 09:45 PM.
|
|
|
|
|
04-26-2015, 09:45 PM
|
#5
|
|
I am my own mechanic....
Join Date: Feb 2013
Location: Salt Lake City, UT
Posts: 3,433
|
Quote:
Originally Posted by particlewave
My guesses, in order of ease to fix;
1) exhaust leak or loose heat shield (will increase under load)
2) flywheel, especially if it's a lightweight
3) transmission input shaft bearing
|
Flywheel is why I asked if it was a full job. The clutch / flywheel is cheap compared to the cost of remove & replace trans. You only want to do that once in many thousand miles.
__________________
'04 Boxster S 50 Jahre 550 Spyder Anniversary Special Edition, 851 of 1953, 6-sp, IMS/RMS, GT Metallic silver, cocoa brown leather SOLD to member Broken Linkage.
'08 VW Touareg T-3 wife's car
'13 F150 Super Crew long bed 4x4 w/ Ego Boost
|
|
|
|
|
04-26-2015, 09:55 PM
|
#6
|
|
Need For Speed
Join Date: Feb 2013
Location: Funville
Posts: 2,112
|
Could a bad motor mount cause this?
__________________
2003 Boxster S
| 987 Air Box | K&N Air Filter | 76mm Intake Pipe| 996 76mm TB | 997 Distribution T | Secondary Cat Delete Pipes | Borla Muffler | NHP 200 Cell Exhaust Headers |
|
|
|
|
|
04-27-2015, 02:44 AM
|
#7
|
|
550 Anniversary
Join Date: Jul 2012
Location: Surrey, UK
Posts: 747
|
Quote:
Originally Posted by KRAM36
Could a bad motor mount cause this?
|
If the engine mount was that bad you'd barely be able to change gear and the driveline clunk would complement the rattle.
__________________
Current: 550 Spyder Anniversary- Carnewal exhaust - 100 cell cats - stainless manifolds - 4" underdrive pulley - poly gearbox mounts - rear lower alu brace - adjustable rear toe links
Sold: 986S - Zenith Blue - 18" Sport Classics - Black Zunsport grilles - Stainless silencer and manifolds - K&N panel - shortshift - M030 suspension - 75mm throttle body - custom 83mm intake - SmartTop - custom remap - MDS underdrive pulley
|
|
|
|
|
04-27-2015, 04:27 AM
|
#8
|
|
Beginner
Join Date: Mar 2013
Location: Houston
Posts: 1,659
|
Posting a video would help with figuring this out.
__________________
2003 S manual
|
|
|
|
|
04-27-2015, 06:08 AM
|
#9
|
|
Registered User
Join Date: Dec 2009
Location: Orange County, CA
Posts: 1,847
|
Anna you have a beautiful car, congratulations!
a video of the noise could be helpful indeed to ID the source of the noise
.
|
|
|
|
|
04-27-2015, 07:23 AM
|
#10
|
|
Registered User
Join Date: Nov 2004
Location: New Jersey
Posts: 8,709
|
Quote:
Originally Posted by anna0141
I started hearing a loud rattling sound coming from the engine, the car drives perfectly fine..
|
typically, this is when most stop driving the car and visit a professional.
If you don't know the issue how can you be sure you are not creating a bigger problem by driving it?
btw, your car looks heavily modified. Were the headers replaced recently? They may be rubbing. I think that sound goes away when the clutch is engaged and starts rattling again when the car is idling.
__________________
GT3 Recaro Seats - Boxster Red
GT3 Aero / Carrera 18" 5 spoke / Potenza RE-11
Fabspeed Headers & Noise Maker
BORN: March 2000 - FINLAND
IMS#1 REPLACED: April 2010 - NEW JERSEY -- LNE DUAL ROW
Last edited by Perfectlap; 04-27-2015 at 07:31 AM.
|
|
|
|
| Thread Tools |
|
|
| Display Modes |
 Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is On
|
|
|
All times are GMT -8. The time now is 10:09 AM.
| |
My car
Porsche Boxster S
Porsche Boxster
