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)

How to be absolutely sure it's a failing fuel pump?

TurboLove
 Share

Recommended Posts

TurboLove Member

TurboLove

Posted
Posted

I have a '08 CTT.  I have had experience with bad fuel pumps. I had a failed fuel pump (driver side, under rear seat) replaced at 40,600 miles.  (When it happened, the car barely got moving trying to accelerate after a red light.)   I'm at 57,000 miles now and just today when I got into the car and turned it on, I hear a noticeable but very faint din/whine.  I am having trouble trying to locate where it's coming from but it may be coming from the fuel pump that was replaced previously.  

 

The car drives and idles normal.  No warning lights on the dashboard.   So my question, could this be another fuel pump going bad?  If so, how long before it craps out?  What/where else should can I check to determine if the noise may not be the fuel pump?  Any suggestions, insights and experience are welcome!  Thanks so much for your help.

  • Moderators
JFP in PA Member

JFP in PA

Posted
  • Moderators
Posted

I have a '08 CTT.  I have had experience with bad fuel pumps. I had a failed fuel pump (driver side, under rear seat) replaced at 40,600 miles.  (When it happened, the car barely got moving trying to accelerate after a red light.)   I'm at 57,000 miles now and just today when I got into the car and turned it on, I hear a noticeable but very faint din/whine.  I am having trouble trying to locate where it's coming from but it may be coming from the fuel pump that was replaced previously.  

 

The car drives and idles normal.  No warning lights on the dashboard.   So my question, could this be another fuel pump going bad?  If so, how long before it craps out?  What/where else should can I check to determine if the noise may not be the fuel pump?  Any suggestions, insights and experience are welcome!  Thanks so much for your help.

 

I would suggest using something like an automotive stethoscope to try and  isolate the sound to make sure it is the pump.

TurboLove Member

TurboLove

Posted
  • Author
Posted

Good suggestions.  Okay, let's just assume it's a bad fuel pump (I realize I don't know for sure,) am I driving on borrowed time and does this typically happen where the fuel pump starts to give off a consistent whine before it shuts down? again, it is so faint someone else may not recognize it, but as I drive it daily, I know the sounds inside my car.....

  • Moderators
JFP in PA Member

JFP in PA

Posted
  • Moderators
Posted

Good suggestions.  Okay, let's just assume it's a bad fuel pump (I realize I don't know for sure,) am I driving on borrowed time and does this typically happen where the fuel pump starts to give off a consistent whine before it shuts down? again, it is so faint someone else may not recognize it, but as I drive it daily, I know the sounds inside my car.....

 

More often, fuel pumps fail without any warning or noise, which is why I suggested trying to confirm the sound's source.  In the end, it may not be coming from the fuel pump.

TurboLove Member

TurboLove

Posted
  • Author
Posted

 

Good suggestions.  Okay, let's just assume it's a bad fuel pump (I realize I don't know for sure,) am I driving on borrowed time and does this typically happen where the fuel pump starts to give off a consistent whine before it shuts down? again, it is so faint someone else may not recognize it, but as I drive it daily, I know the sounds inside my car.....

 

More often, fuel pumps fail without any warning or noise, which is why I suggested trying to confirm the sound's source.  In the end, it may not be coming from the fuel pump.

 

This is helpful.  I will continue to explore where the noise is coming from.  The hunt continues!

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
 Share
Go to topic listing
×
×
  • 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.