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)
Brew

996 C2 heater issue

Recommended Posts

I just picked up an '04 996 with very low mileage. 

The climate control blows only cool air. This usually means the outside temp sensor is bad, however the correct outside temp displays on the dash so not sure that is the problem.

Other suggestions?

Share this post


Link to post
Share on other sites
    You can remove these ads by becoming a Contributing Member.

How is the coolant level? Any recent work done on the cooling/heating system?  New tank?  New pressure cap?  New water pump?  The reason I ask is it is very difficult to "burp" the cooling system on these cars.  Make sure the coolant level is correct and open the "burp" valve on the coolant tank by raising the wire to open the valve (the black valve on top of the coolant tank).  Leave it up.   Several  heating and cooling cycles is necessary to remove air from the system.  Always when doing so, put the heat on maximum so any air is forced out of the system.  While doing so, constantly check the coolant level and top it up if necessary.

  • Like 1

Share this post


Link to post
Share on other sites

Thanks DBJoe996. I just got the car and am not aware of any work done that would affect the system, but your's is a great suggestion.

I'll give it a try.

Thanks!!

Share this post


Link to post
Share on other sites

Hey DBJoe996, I pulled the burb valve and drove the car a bit. After about a half-dozen start-ups, I had heat.

Thanks for the advice!!!

Share this post


Link to post
Share on other sites

Make sure you keep an eye on the coolant level in the tank.  You displaced some air in the system and your coolant level may drop. 50/50 mix of Porsche coolant and distilled water to top it up.  Also make sure you have the latest coolant tank cap...it is blue and the part number ends in 04.  The old caps had a tendency to leak so Porsche updated/revised the cap.  The part number is located on the cap.  Good job!

Edited by DBJoe996
  • Upvote 1

Share this post


Link to post
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

×

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.