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)

Diagnostic trouble codes

Recommended Posts

I have 98 Boxster 5 speed w/ 94k miles. When I first got it (2 years ago 84k) it seemed a little jittery at the higher rpms. Now, for several months, it loses power during hard acceleration around 5000 rpms. Most noticeably in higher gears. It has an mil. I need to get it smogged and it won't pass with a light on. The code is Porsche FC 360&361 / P-code p1128&p1130. These could be above rich or below lean mixture threshold. It seems the problem would be lean as if not enough fuel. I mean it feels that way to me. I believe there is a way to determine this and I intend to study it more tonight. I was going to change the fuel filter. I was thinking that someone who knows what they are doing may recognize the problem and hoping they might help me.


Link to comment
Share on other sites

  • 2 weeks later...

I cleaned the MAF and it ran much better. So I cleaned it some more and it barely made it back in the garage. I replaced it and it runs better than ever. I have not driven it enough to complete all readiness tests, but I'm sure it is going to be alright. I have other problems with the coolant reservoir. Thank you for your help sending me in the right direction. Mike. :)

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.