Jump to content

Server Lease Renewal/Software Licenses

Our yearly server lease, software licenses, as well as hardware operating costs, ARE due Dec 4th, 2022. 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)

Fuel pump, fuel lines, fuel pressure ?


Recommended Posts

Just had the fuel pumps and the filter replaced. Car runs great, even the problem with the idle dip at stops went away. A was so happy but now.... I feel if the fuel level in the tank is going lower the car is acting strange again.

When i take the car from the shop we went for a xmas holiday. First 200 km great performance at any idle and any speed. No problem to hit 250 km/h. Very smooth at all. After about 1/2 tank i would say, suddenly again strange acting again. It feels like there is no fuel for some seconds. I was realy affraid something seriuos again. At lower speed i feel it even more than a higher speed. Any idea what could happen? I feel its in some way related to the last job at the fuel tank. But maybe i am wrong.

Cayenne S 2004

Link to comment
Share on other sites

Here is a table showing the pump logics.

Starting procedure: left and right pumps on

Fuel tank qty >60 L

right pump on.

High load: left and right pumps on.

Fuel tank qty < 60 L

left pump on.

High load: left and right pumps on.

Did you also change the fuel regulator with the pumps and filter?

Link to comment
Share on other sites

Thank you for explaining me how the system works.

About the Part which you mentioned ....... Where is it located?

Regarding the invoice of the Last Job i can Only see:

Right pump replaced.

Filter replaced.

Left pump checked. Only replaced a wire Which was Not sitting correct.

Thank you

Link to comment
Share on other sites

The fuel filter is located under the left access cover which gives access to the left fuel pump.

The fuel regulator is located under the right access cover which gives access to the right fuel pump.

There is plumbing that is disturbed when changing the pump and filter.

It possibly may be causing your issues if it has not been securely reconnected.

Link to comment
Share on other sites

The fuel filter is located under the left access cover which gives access to the left fuel pump.The fuel regulator is located under the right access cover which gives access to the right fuel pump.There is plumbing that is disturbed when changing the pump and filter.It possibly may be causing your issues if it has not been securely reconnected.

Seems to be this month's theme on problems.. :help:

  • Upvote 1
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.