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)

1999 Boxster 2.5L - Trouble codes for mis-fire - Emission Relevant???

Danny Buonsanto
 Share

Recommended Posts

Danny Buonsanto Member

Danny Buonsanto

Posted
Posted

Today I got these codes when scanning the check engine warning.  Does anyone has had this happen like this and what you think it could be.  Obviosly the chances of all 6 cylinders misfiring at once is pretty slim to none.  Perhaps its bad coils and plugs that is throwing the ignition sequence off? Any thoughts or insights?

 

My car is a 1999 Boxster base manual transmission 2.5L Thanks!


P1313 Misfire, Cylinder 1, Emission Relevant

P1314 Misfire, Cylinder 2, Emission Relevant

P1315 Misfire, Cylinder 3, Emission Relevant

P1316 Misfire, Cylinder 4, Emission Relevant

P1318 Misfire, Cylinder 6, Emission Relevant

P1319 Misfire, Emission Relevant
 

  • Moderators
JFP in PA Member

JFP in PA

Posted
  • Moderators
Posted
4 minutes ago, Danny Buonsanto said:

Today I got these codes when scanning the check engine warning.  Does anyone has had this happen like this and what you think it could be.  Obviosly the chances of all 6 cylinders misfiring at once is pretty slim to none.  Perhaps its bad coils and plugs that is throwing the ignition sequence off? Any thoughts or insights?

 

My car is a 1999 Boxster base manual transmission 2.5L Thanks!


P1313 Misfire, Cylinder 1, Emission Relevant

P1314 Misfire, Cylinder 2, Emission Relevant

P1315 Misfire, Cylinder 3, Emission Relevant

P1316 Misfire, Cylinder 4, Emission Relevant

P1318 Misfire, Cylinder 6, Emission Relevant

P1319 Misfire, Emission Relevant
 

Welcome to RennTech :welcomeani:

 

Could be a lean misfire, I'd pull a plug or two, looking to see of they are overly white, sign of lean condition.

Danny Buonsanto Member

Danny Buonsanto

Posted
  • Author
Posted

Oh thanks I plan on changing the plugs and coils anyway...how could I fix a lean mixture condition?  My HC level was a bit high on the Dyno @ 15 MPH test.  At 25 MPH, it was within limits...trying to pass CA smog check.  

  • Moderators
JFP in PA Member

JFP in PA

Posted
  • Moderators
Posted
1 minute ago, Danny Buonsanto said:

Oh thanks I plan on changing the plugs and coils anyway...how could I fix a lean mixture condition?  My HC level was a bit high on the Dyno @ 15 MPH test.  At 25 MPH, it was within limits...trying to pass CA smog check.  

 

Lean misfires are air leak related (excess air getting into the intake system).

  • Moderators
JFP in PA Member

JFP in PA

Posted
  • Moderators
Posted
6 minutes ago, Danny Buonsanto said:

Ah so a hose must be cracked then somewhere?

 

 

Could be, but you need to confirm the lean misfire theory first by looking at the plugs.

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.