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)

Noise from radio with Nokia Car Kit

Recommended Posts

I have a 2001 996 C4 with factory installed CDR22 (and Porsche amp in the front trunk) and an afterwards installed Nokia Carkit CARK-91 connected to the radio. When the phone is in use, the radio mutes and sound comes through one of the speakers, as it should.

But the problem is that I hear a whining, annoying sound through the speaker when I drive. Higher RPM's, higher whinging sound. For me it is still not much of a but problem, but the person I'm talking to through the phone has lots of trouble understanding me as he also hears this same whining sound.

I did some searches on the forum but without any solution. I read somewhere that maybe a noise suppression filter should be installed, but I don't know where (what wires) I should connect it to. Can somebody help ?



Link to comment
Share on other sites

I hooked up my iPod to my Becker a few weeks ago and had the same problem. I went to Fry's and bought one of those noise suppression units from the car stereo department (they had several to choose from that were about $20 each). It's typically a black box with a red, black, and possibly one other wire coming out of it. I connected the red and black wires from my iPod cable power to the noise suppression box and then connected the red and black wires on the box to the power and ground wires going into my radio. Completely solved my problem.

They are also known as a "Ground Loop Isolator". A lot of them have RCA plugs on them which was not what I needed. But, Fry's had one with just the ground and power wires that did the trick for me.

This one looks somewhat similar to the one I bought.

Edited by monkeydust
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • 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.