986 Forum - The Community for Porsche Boxster & Cayman Owners

986 Forum - The Community for Porsche Boxster & Cayman Owners (http://986forum.com/forums/index.php)
-   Boxster General Discussions (http://986forum.com/forums/forumdisplay.php?f=5)
-   -   A little rumble right at 3k RPM (http://986forum.com/forums/showthread.php?t=14485)

FrayAdjacent 12-03-2007 04:11 PM

A little rumble right at 3k RPM
 
I noticed a bit of a vibration or rumble earlier this year when the engine hits about 3kRPM. It seemed to only happen when the AC was on, under light load. Now it's happening a bit without the AC on, like when I'm cruising on the freeway.

I figure I should replace the main belt, since I just turned 50k miles... Would everyone agree that might could be the cause? Any other ideas?

John V 12-03-2007 04:20 PM

Your engine mount is toast. Replace it and the rumble will go away.

http://vorlon.case.edu/~jpv/boxster_mount/Mount2.jpg

FrayAdjacent 12-03-2007 04:54 PM

Whoa! motor mounts, huh?

They're not that hard to replace, are they? (I've swapped 911 engines and stuff, I think I can handle it!)

John V 12-04-2007 04:22 AM

The motor mount is pretty easy to do.

FrayAdjacent 12-04-2007 06:06 AM

I'll start looking into that... I'll probably also replace the belt just for some peace of mind!

CJ_Boxster 12-04-2007 08:21 AM

Is there a way to fill the transmission mounts with the same stuff as the old repaired motor mounts?

FrayAdjacent 12-04-2007 06:06 PM

I've seen people refurbish motor mounts by filling in around the bushing with some kind of polyurethane stuff...

I figure I'll get up under it and check to see which may actually be bad... and just replace them with stock mounts. Since it's my DD, no need to go crazy with real stiff mounts!

CJ_Boxster 12-05-2007 11:07 AM

Yeah i seen that too with the motor mount but not the Transmission mount, but i wonder if its possible


All times are GMT -8. The time now is 04:02 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website