Jump to content

Server Lease Renewal/Software Licenses

Our yearly server lease, software licenses, as well as hardware operating costs, ARE due Dec 6th, 2021. Our current donations have fallen far short of the funds we need to renew. Please remember the RennTech.org community is Member supported so please consider a donation to help...  THANK YOU!

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)

AC blowing HOT air. Relay?


Recommended Posts

I have a 2003 Boxster S. When I turn the AC on, It blows heated air. The fan controls turn up as it senses it geting hotter, but the air is hot so it just keeps getting hotter and faster. The compressor is kicking in. Is there a relay that controls heat/cold? It acts as though it's stuck on heat, but everything else works as if its blowing cold air. I was hoping it is a relay, but I looked at the charts and didn't see one that would pertain.

THX

Link to comment
Share on other sites

  • Moderators

Looks like a sensor or actuator problem, take a look if the outside temp. sensor on the right side in the front bumper is still in place, sometimes the sensor falls out the support and lies against the warm radiator. If not, using a PIWIS diagnostic tool is the best way to go.

Link to comment
Share on other sites

Looks like a sensor or actuator problem, take a look if the outside temp. sensor on the right side in the front bumper is still in place, sometimes the sensor falls out the support and lies against the warm radiator. If not, using a PIWIS diagnostic tool is the best way to go.

Brilliant! It was in fact laying by the radiator. Thanks for taking the time to respond.

Link to comment
Share on other sites

Looks like a sensor or actuator problem, take a look if the outside temp. sensor on the right side in the front bumper is still in place, sometimes the sensor falls out the support and lies against the warm radiator. If not, using a PIWIS diagnostic tool is the best way to go.

Well, I got excited too soon. It's still doing it. Does anyone know how to test the inside and outside sensors? I have a multimeter, I just don't know what to look for.

Link to comment
Share on other sites

  • Moderators

The electric and electronic part of the AC/heater system is tested by a PIWIS diagnostic tool through a system scan. If traces of foam are blown from the vents, this means a problem with the hot/cold valve foam lining. Do a search, this item has been here several times addressed, inclusive a DIY solution. Success.:renntech:

Link to comment
Share on other sites

  • 2 months later...

I figured out the problem and just wanted to post the solution for anyone else. The heater and AC run at the same time. There is a central flap that swings to adjust temp between the two. For me, the motor to the central flap had just become disconnected from the flap. Its at the bottom of the unit towards the center console. I just plugged it back in and it worked. The test was that the air would stay cold on the lowest fan setting, but when I turned it up, The velocity would grab the internal flap and close it so that heat only came through, You could hear it close internally. Hopefully, this will help someone else. Gotta love a free fix.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • 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.