brian in buddina Posted 28March, 2021 Report Share Posted 28March, 2021 My air con stopped blowing cold air a couple weeks ago. Luckily it waited until the summer ended. Then yesterday I noticed that all the fans blower speeds stopped working except the highest setting. I’m not sure if if these issues are related. After a drive yesterday all the fan speeds came back to working but still no air con. A couple years ago the I had the air con compressor rebuilt and the system re gassed. I did check a few days ago to see if the compressor belt has failed but it was still in place & working. I had a read of Clark’s Garage last night to see if there was something I should check but nothing jumped out at me. Questions: are these issues related? Relays? Fan switch wearing out? Where do I start to try & analyse the issue(s) here. Quote Link to comment Share on other sites More sharing options...
Dreamr Posted 28March, 2021 Report Share Posted 28March, 2021 This may or may not be relevant but the 996 has an inherent problem with the ignition switch. Went for a drive the other night and the fan, air conditioning and headlights wouldn't turn on. Turns out that as the switch wears out, it doesn’t turn back far enough to make the correct contact for everything to work properly. A bit of googling and a small twist of the key and all was right in the world again. I just got a new one delivered yesterday so that’s the next job on the list ... brian in buddina 1 Quote Link to comment Share on other sites More sharing options...
Coastr Posted 28March, 2021 Report Share Posted 28March, 2021 Not sure if you have a fan resistor in that model? Intermittent fan blowing issues sounds like resistor failure in other cars. Might be worth searching on that rather than symptoms brian in buddina 1 Quote Link to comment Share on other sites More sharing options...
cyberpunky Posted 29March, 2021 Report Share Posted 29March, 2021 The fan resistor pack is under front cowl in front of windscreen. Remove, soak on white vinegar for an hour and give a good scrub. Once dry reinstall. Your heater clip is broken. Its on left under dash. I had to remove glove box but clip is easy to replace once that's out and cheap from nearest Porsche centre. Most online help articles are on LHD cars so glove box removal isn't mentioned brian in buddina 1 Quote Link to comment Share on other sites More sharing options...
brian in buddina Posted 29March, 2021 Author Report Share Posted 29March, 2021 Thank you gentlemen for your replies. Found the location of the resister pack on Pelican Parts web site, the red arrow. Dip the whole white bit into vinegar? Quote Link to comment Share on other sites More sharing options...
TINGY Posted 30March, 2021 Report Share Posted 30March, 2021 I had a 944 that did exactly this, sometimes work, sometimes not. It was the AC control module fan speed switch that was the culprit in the end. brian in buddina 1 Quote Link to comment Share on other sites More sharing options...
cyberpunky Posted 30March, 2021 Report Share Posted 30March, 2021 yes remove soak, then use a toothbrush to give a good clean, dry and reinstall. You can get heater clip from local porsche centre and it's not expensive. Once glove box is out it's a 5 minute job. Remove power at battery before removing glove box, as light in glove box can cause a short when you take glove box out(ask me how I found out ;) ) brian in buddina 1 Quote Link to comment Share on other sites More sharing options...
brian in buddina Posted 30March, 2021 Author Report Share Posted 30March, 2021 3 hours ago, TINGY said: I had a 944 that did exactly this, sometimes work, sometimes not. It was the AC control module fan speed switch that was the culprit in the end. Did you order one from Porsche? Are you referring to the fan speed switch, with the 0 to 4 settings? Please excuse the dog hair! Quote Link to comment Share on other sites More sharing options...
cyberpunky Posted 30March, 2021 Report Share Posted 30March, 2021 the clean fixes mine. That AC unit is $$$$'s so see how you go with cleaning resistor pack before you order Quote Link to comment Share on other sites More sharing options...
cyberpunky Posted 30March, 2021 Report Share Posted 30March, 2021 I just did it then(still soaking) but took some pics and posted a how to on my blog refitted it and all settings working on fan again https://kewlhunter.com/2021/03/30/944-hvac-fan-only-working-on-4max-fixed/ brian in buddina 1 Quote Link to comment Share on other sites More sharing options...
TINGY Posted 30March, 2021 Report Share Posted 30March, 2021 That's it Brian, it comes out as a whole unit and the frame is a bit flimsy so be careful. I am sure mine was repaired in the past because you could see where the fan speed controller was pulled apart and from memory some solder was re-done. It's a Hella unit and they are Hella expensive. brian in buddina 1 Quote Link to comment Share on other sites More sharing options...
wandaleeq Posted 29July, 2021 Report Share Posted 29July, 2021 That’s why you should buy an air conditioner. I just couldn’t survive without my air conditioner in my area, especially this summer. The only issue I had is that the air conditioner kept on corrupting and blowing any cold air. I tried to clean it several times, but it never worked out. That’s why I kept on asking several services to come and fix my air conditioner, but when it corrupted for the third time in the week, I decided to look for an alternative. I ended up finding this website https://www.marvellous.sg/aircon-not-cold/ that’s had a lot of different information about air conditioners and how to fix them. I also found a guide on how to fix my issue, and after following it, I was able to fix my air conditioner finally. Quote Link to comment Share on other sites More sharing options...
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