15 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
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YOUR RESEARCH996tt coolant loss - Page 1 - 911/Carrera GT - PistonHeads UK
Reported repair
Combined work: Replace cap ...problem + Replace rads and still coolant level dropped
Reported resolution
1
Reported fixes
0
Unsuccessful attempts
1
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Discussions that report a fix
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Reported fix
I had this issue , opc changed all the rads and still coolant level dropped . Changed the cap ...problem solved ..
996tt coolant loss - Page 1 - 911/Carrera GT - PistonHeads UK
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Leading evidence: 'Combined work: Replace cap ...problem + Replace rads and still coolant level dropped' (1 discussions report resolution; 0 report an unsuccessful attempt). Across 1 matching discussions, The most frequently discussed action is 'Combined work: Replace cap ...problem + Replace rads and still coolant level dropped' (1 discussions). For that action, 1 discussions report a resolution and 0 report an unsuccessful attempt. The most frequently reported fix is 'Combined work: Replace cap ...problem + Replace rads and still coolant level dropped', supported by resolution reports in 1 discussions. 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 performed work without a confirmed outcome
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.
996tt coolant loss - Page 1 - 911/Carrera GT - PistonHeads UK
Replace rads and still coolant level dropped
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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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 performed work without a confirmed outcome
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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.
Performed · outcome unconfirmed
I had this issue , opc changed all the rads and still coolant level dropped .
996tt coolant loss - Page 1 - 911/Carrera GT - PistonHeads UK
Replace coolant cap too
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
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Unsuccessful attempts
1
Discussions
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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
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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 have been advised to remove the undertrays look for evidence of coolant there, also replacing the coolant cap too.
996tt coolant loss - Page 1 - 911/Carrera GT - PistonHeads UK
Run from the front
Suggestion or failed attempt
No successful repair reported for this finding.
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Unsuccessful attempts
1
Discussions
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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
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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 noticed some fluid running from the front under tray, drivers side just behind the front wheel.
996tt coolant loss - Page 1 - 911/Carrera GT - PistonHeads UK
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.
15 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
PistonHeads: 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: 20261026T194705Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
My coolant has dropped from the max level over c.4 months and 1500 miles by about 4mm, is any loss of coolant normal? The radiators were done about 7k miles ago/18 months. No evidence of any fluid on the floor etc.
Any feedback appreciated.
Thanks for the reply. the header tank is quite big and 4mm over that surface area is quite alot of fluid. I have been advised to remove the undertrays look for evidence of coolant there, also replacing the coolant cap too. Will post back what I find.
The cap on the header tank can leak - there is a more modern cap ( someone will know the part numbers) that solves this problem . I had this issue , opc changed all the rads and still coolant level dropped . Changed the cap ...problem solved ..
Is the header tank discoloured ?
With age the header tanks are known to fail (weirdly right round the back of the bottle hidden away in the inner wing usually!) the bottles can suffer hairline cracks with age that only leak at certain temperatures; are there any signs of dried coolant on the inner wing / undrr the LH turbo / heatshield areas??
Have tonight jacked the rear of the car up to get better access to view the heat shields, area under the coolant tank. I noticed some fluid running from the front under tray, drivers side just behind the front wheel. The fluid does nt smell of anything, I wondered it was some residual water from a puddle or could it be from the air con. I have tried to dry what I can see and will check again later. My plan is this weekend to strip that under tray off to gets better look of what's happening under there. Is there a section of hose vulnerable to leaks in that area of the car?
I took the car out tonight, got it up to temperature. When I got back in the garage I jacked the back up again and some fluid poured out from the under tray from the same point as before. I managed to collect some in a syringe, the fluid was clear and all I can assume is that's coming from the air con .
I am going to carefully monitor what's going on in the header tank. I took it out today, the longer I leave it between drives the faster it feels, it is so quick I can't imagine what the new one is like.
666TUR said:
I am going to carefully monitor what's going on in the header tank. I took it out today, the longer I leave it between drives the faster it feels, it is so quick I can't imagine what the new one is like.
The cold air must help too
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