5 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHThe vanishing coolant
Reported or suspected cause
air bubble in the system
Suggestion or failed attempt
No successful repair reported for this finding.
0
Identified cause
1
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 suspect 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.
Suspected cause · Original poster
They told me it was probably an air bubble in the system and when it popped the coolant settled causing it to be low.
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
I went through something similar with my 03 Turbo and suspected the cap -- I've already replaced the Boxster's cap after similar circumstances -- and tech at the dealer checked system for pressure leaks and found none then checked cap and found it would not hold pressure.
Leading evidence: 'air bubble in the system' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'air bubble in the system' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Check cap and found it would not hold pressure' (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 suspect 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.
Suspected cause
Somehow, someway, I'd suspect the coolant tank as the culprit.
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
I went through something similar with my 03 Turbo and suspected the cap -- I've already replaced the Boxster's cap after similar circumstances -- and tech at the dealer checked system for pressure leaks and found none then checked cap and found it would not hold pressure.
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
I went through something similar with my 03 Turbo and suspected the cap -- I've already replaced the Boxster's cap after similar circumstances -- and tech at the dealer checked system for pressure leaks and found none then checked cap and found it would not hold pressure.
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
I went through something similar with my 03 Turbo and suspected the cap -- I've already replaced the Boxster's cap after similar circumstances -- and tech at the dealer checked system for pressure leaks and found none then checked cap and found it would not hold pressure.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Check cap and found it would not hold pressure
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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
I went through something similar with my 03 Turbo and suspected the cap -- I've already replaced the Boxster's cap after similar circumstances -- and tech at the dealer checked system for pressure leaks and found none then checked cap and found it would not hold pressure.
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
I went through something similar with my 03 Turbo and suspected the cap -- I've already replaced the Boxster's cap after similar circumstances -- and tech at the dealer checked system for pressure leaks and found none then checked cap and found it would not hold pressure.
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
I went through something similar with my 03 Turbo and suspected the cap -- I've already replaced the Boxster's cap after similar circumstances -- and tech at the dealer checked system for pressure leaks and found none then checked cap and found it would not hold pressure.
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.
5 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: 20261026T213932Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
The coolant light came on in March, I looked at the recovery tank and noticed it was low so I filled it in-between the low and high lines. A few days later the light came on again, no leaks, no oil in the coolant, no coolant in the water.
I took it to Porsche, they had it for 2 days under a pressure test and found nothing wrong, filled it for me and it was fine. They told me it was probably an air bubble in the system and when it popped the coolant settled causing it to be low.
Today just about 3 months later, the recovery tank looked low so I opened it up and it was dry. I added about 16 to 20 ounces to fill it between the 2 marks.
I went for a 75 mile drive came home and its just where it was before I left, in-between the 2 marks for low and high.
I am puzzled again, no coolant in the oil, I changed the oil 2 weeks ago and its still golden color, not foamy or funky.
Does it look like it's leaking at the cap? I recall reading something about early caps going bad, and allowing fluid to leak out and evaporate. If the cap is original, it might be worth replacing and they're cheap.
Coolant cap. Wonder why the dealer didn't pressure test the cap? I went through something similar with my 03 Turbo and suspected the cap -- I've already replaced the Boxster's cap after similar circumstances -- and tech at the dealer checked system for pressure leaks and found none then checked cap and found it would not hold pressure. Cap replaced. This car -- my 03 Turbo -- still under warranty.
If you don't want to pay for the diagnostics time you can just replace the cap. Cost should be less than $15 ($13 is what I think I paid for the Boxster's cap).
(You might consider replacing the oil filler tube cap too. The one on my Boxster developed a leak after so many years and the symptoms mimiced a bad MAF.)
Anyhow, after replacing the cap then keep an eye on the fluid level.
Sincerely,
Macster.
This is a source reference. Confirm exact model applicability in the original material.
