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)

Cold Weather Throttle Hesitation

Recommended Posts

I've noted that as the weather turns colder, my 2003 Boxster S has started to run pretty poorly when cold ( below 50 here in Phoenix is cold). Starts fine, idles fine, but does not want to take partial throttle input until the water temp is close to 180 degrees. The problem is more between the 1100 rpm to the 2500 rpm range (partial throtlle) because if you really jump on it, it will respond and run fine in the +3000 rpm range. This is a new issue this winter and i suspect a dirty MAF sensor to be a part of the problem. Then again there is a cold start circuit that I don't know anything about that could be the problem too. No CELs have shown up to make problem solving any easier and the Spark Plugs are fairly fresh.

Thx to any of the members that could offer some suggestions.


Link to comment
Share on other sites


Forgot to mention that I had cleaned the throttle body earlier this year. Regardless, I pulled the MAF sensor and it was 55,000 miles dirty. Cleaned it and the fifference is just short of remarkable. Runs smooth while cold and once warmed up, it seems to run much smoother throughout the rev range.

Thx for your advice though, as the throttle body could have gotten dirty again too and I will check it this weekend.



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.