I'm new here from another forum and found this place while searching for an answer to an issue that arose recently on my 1999 996. I'm a long time Porsche owner going back to the 80's and sorry that my first post here is a problem/question but...here goes. Overnight the A/C has gone completely hot even though the compressor sounds like its kicking in and the upper freon tube is very cold. At the same time a electrical clicking sound has appeared under the dash on the passenger side. The sound begins as the key is turned to the on position and lasts only about 5-8 seconds or so. I have found a couple of threads here that reference a similar sound but no clues have been offered yet as to what it may be. I did get some great info so far as to what is located under the dash including some diagrams and a photo posted by Mfletch. Hope you folks can lend me a hand here. Thank you.
Discussion summary
YOUR RESEARCHPassenger side under dash electrical clicking
1 matching discussions were examined; no attributable action/outcome evidence was detected. No consensus or repair conclusion is claimed.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Read captured repliesInsufficient extracted evidence does not mean there is no answer in the original discussions.
1 matching discussions · 4 captured posts examined · 0 partial discussions
Coverage and how to read this overview
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.
4 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
- Rennlist: 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: 20261026T081417Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
My '99 996 cabrio has the same clicking sound, but my A/C runs nice and cold. I have been assuming the clicking to be some HVAC internal vent door opening or closing. Just my guess. relinuca
Mine makes the same noise and the A/C still works. I'm guessing it might be a recirculation or deflection flap motor.
thanks for responding folks. the noise just started a few days ago and while out driving it this morning I noticed that it clicks at various times now, not just at start up. I guess i can either start taking the dash apart or take it to the shop. Taking it in at first sign of trouble often ends up being less expensive in the long run.
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