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)

996 HP loss questions

dporsche74
 Share

Recommended Posts

dporsche74 Member

dporsche74

Posted
Posted (edited)

I have some running questions

I was hoping you guys can give me some tips and links or pictures to read up on.

My car is a 1999 C2 996 USA with tip

Lately I have noticed at the lower RPM 1k -4K range . The 996 seems slow or low HP ( also take some time to get thru the lower RPM too)

But...at 5K and higher RPM the HP kicks in hard and fast (feels like full power just swithes on)

What would cause this. For some reason i have been thinking maybe a variocam issue .

I have no CEL lights on and no other driving problems. just slow to start off.

I just fully cleaned the MAF sensor and thorttle body along with the Air filter and oil change.

I do all my own wrenching.

Only been messing with air cooled 911 for 18years + .

this is my 1st water pumper and would like to understand them better.

thanks so much

.

Edited by dporsche74
987_RDC Member

987_RDC

Posted
Posted

Perhaps the flap that actuates inside the intake plenum is not functioning. It it run by vacuum and solenoid and locate inside the intake tube behind the throttle body. (makes it very hard to access with engine installed....

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.