Jump to content

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

Rattling Sound In Engine Bay

Recommended Posts

There's a weird rattling sound in my engine bay, as soon as i start up the engine, i've hoisted the car up on jacks and upon closer inspection, still can't find the actual cause, the rattling seems to be coming from the engine itself, any idea guys wad is wrong? its quite irritating even when im driving and as soon as i put the car in neutral, the noise quietens down, but seems like getting worse.. im getting pretty worried.. anyone can help?

Share this post

Link to post
Share on other sites
    You can remove these ads by becoming a Contributing Member.

Lot's of possibilities depending on the sound.

Does it vary with RPM?

Polyrib belt pulleys can make sounds just before they fail. So can the water pump.

Perhaps post a recording of the sound?

Share this post

Link to post
Share on other sites

Yesterday I noticed a rattling sound in my engine compartment. Mine is a 2006, 2.7, manual with 43Kmiles. Its a constant noise but more noticeable when idle. From sitting on driver's seat, I can hear it coming from center- towards right of engine bay. I'm suspecting water pump or fan/blower. So far no overheating. I will get in engine compartment this coming weekend to inspect.

Share this post

Link to post
Share on other sites

OK. I got into the engine bay and the rattling sound was the water pump. Car still have 1 1/2 month warranty left .so I contacted the only porsche dealership in Puerto Rico, They picked it up this morning.

Share this post

Link to post
Share on other sites

Possibly one or more of the chain tensioners bleeding down. Often goes away by switching to a slightly heavier oil, like Castrol Syntec 10W-40. If heavier oil does not help, it will need more significant mechanical help……..

Share this post

Link to post
Share on other sites

Hi on the theme of rattles, I ave noticed one on start up it comes from the driver side rear and gets worse when you rev the engine any thoughts as it is under warranty.



Edited by baxter99

Share this post

Link to post
Share on other sites
  1. Take it to the dealer so the problem is at least on record.
  2. Ask them to check the cam deviation values at idle; if they are steady, you are in good shape; if they swing back and forth, you/they need to worry.
  3. Try running a heavier weight oil; I prefer 10W-40, many like 5W-40.
  4. Pull the oil filter and cut it open; if it is clean, you are in good shape; if it holds metal flakes, specs of flat black plastic, or granular metal the can be picked up by a magnet, you/they need to worry.

Edited by JFP in PA

Share this post

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.