Go Back   986 Forum - for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Performance and Technical chat

LinkBack Thread Tools Display Modes
Old 08-08-2014, 02:59 PM   #1
Registered User
thom4782's Avatar
Join Date: Sep 2010
Location: Foster City CA
Posts: 1,096

Hi everyone:

My 01S seems to make a humming sound when traveling on a highway at 70 mph. It seems like it is coming from the front, but hard to know for sure. The sound is absent when parked in neutral with the engine revs in the same range as when I'm on the highway.

The cars runs normally. A visual inspection doesn't show anything obviously wrong. The only work done on the car in the last 6 months is the front rotors and brake pads were replaced about 1 month ago.

My first impression was that the hum was tire noise on a newly paved section of the highway. Now I'm less sure. Do you think it more likely related to the brake job? If so, what do you think might be wrong?

Thanks for any insights you can provide.

thom4782 is offline   Reply With Quote
Old 08-08-2014, 03:27 PM   #2
Registered User
Brad Roberts's Avatar
Join Date: Aug 2004
Location: Alta Loma, CA
Posts: 1,334
Wheel bearing.. run it around the clover leaf at Woodside exit. See if it makes noise turning left or right.

Engine Builds, Transmission Builds, Engine Conversions, Suspension Installs, Suspension Tuning, Driver Coaching, Data Acquisition, Video, SCCA/PCA/POC/NASA/GRAND AM/ALMS.
We have worked with amateur and professional drivers for over 26 years. In house machinist, In house fabrication. Our cars, our parts, our engines, our transmission's run nationwide at events every weekend. We work side by side with industry names developing parts.
Brad Roberts 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 02:51 PM.

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