Jump to content

Server Lease Renewal/Software Licenses

Our yearly server lease, software licenses, as well as hardware operating costs, ARE due Dec 6th, 2021. Our current donations have fallen far short of the funds we need to renew. Please remember the RennTech.org community is Member supported so please consider a donation to help...  THANK YOU!

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)

Humming / howling noise getting louder


Recommended Posts

Hello, hope someone can help out a little . .

I have a 99' 996 C4 tiptronic , and it seems to have a gradual loud humming / howling noise upon applying the accelerator, especially in 4th and 5th gear (any speed really), if I step off the gas it completely goes away . . . The noise is coming from the driverside, at the back of the car, around the wheel / transmission / drivetrain area . . I don't think it's anything to do with the wheel, I beleive it to be related to the trans or drivetrain . . . Any ideas? I feel it's becoming worse, and something bad is going to happen . . . Also, when I get out of the car, I smell transmission oil strongly, though there are no leaks whatsoever.

Thank you all indeed.

Gareth

Link to comment
Share on other sites

Check the differential oil level on the tiptronic, can be a small leak on the seal of the transmission axle left or right. I hope it's not to late.

I appreciate your response - Another guy mentioned that to me also . . . When you say, "I hope it's not too late . . " You mean? Go easy on me . . . Thanks in advance for your advice.

Link to comment
Share on other sites

The smell of transmission oil in combination with this kind of noise makes me nervous, if i was you i would take a look A.S.A.P.

How do I take a look? Do you suggest going to a dealer? Or something I check myself? Of course, it makes me nervous also, but what are various fix scenarios, or am I in BIG trouble either way? What do you think the dealer would suggest to troubleshoot? Would they haveto drop the trans & engine?

Thanks again for the follow up!

Link to comment
Share on other sites

  • Moderators

There is one inspection/filling hole in the aluminium housing of the Z.F. differential, you can open it with an alan key, you have to fill till the oil comes out this is the filling level.

If it is too difficult go to the dealer or independent.

Link to comment
Share on other sites

There is one inspection/filling hole in the aluminium housing of the Z.F. differential, you can open it with an alan key, you have to fill till the oil comes out this is the filling level.

If it is too difficult go to the dealer or independent.

Hey RFM,

Thanks for staying with me on this, I sincerely appreciate it . . . What do you think the dealer will charge $$ / tell me? What is worst case scenario here? Thank YOU

Link to comment
Share on other sites

  • Moderators

I dont no what the charge is in the US, it takes approx. 1 hour to check/tip up the level and a test drive done by a mechanic. After the run they can tell you the result of there findings, in cases like this it is to difficult to give a solution without seeing and driving the car.

Link to comment
Share on other sites

I dont no what the charge is in the US, it takes approx. 1 hour to check/tip up the level and a test drive done by a mechanic. After the run they can tell you the result of there findings, in cases like this it is to difficult to give a solution without seeing and driving the car.

Thanks RFM, I shall take it to the dealer this week, and let you know the outcome - Thanks again for the advice.

Link to comment
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.

Guest
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.