12 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHAir con & fan issues
Reported or suspected cause
ac control module fan speed switch
Reported cause
No successful repair reported for this finding.
1
Identified cause
0
Suspected cause
0
Reported fixes
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that report identifying a cause
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Reported cause
It was the AC control module fan speed switch that was the culprit in the end.
Leading evidence: 'ac control module fan speed switch' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'ac control module fan speed switch' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Check but nothing jumped out at me' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
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.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
I did check a few days ago to see if the compressor belt has failed but it was still in place & working.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
yes remove soak, then use a toothbrush to give a good clean, dry and reinstall.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
12 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Porsche Forum Australia: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261027T031046Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
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.
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 ...
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
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
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?
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 ;) )
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/
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.
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.
This is a source reference. Confirm exact model applicability in the original material.
