7 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH2005 987 3.2S losing coolant - Page 1 - Boxster/Cayman - PistonHeads UK
Leading reported evidence
Check coolant level and it was well down approaching minimum
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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 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.
Performed · outcome unconfirmed · Original poster
I checked the coolant level and it was well down approaching minimum.
Leading evidence: 'Check coolant level and it was well down approaching minimum' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check coolant level and it was well down approaching minimum' (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.
Check rads and hoses and couldn't find anything wrong
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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 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.
Performed · outcome unconfirmed · Original poster
They topped it up, ran the car up to temperature, pressure tested it, checked all the rads and hoses and couldn't find anything wrong, but they did find splattered dried coolant all round the header tank and filler cap as though it has been spraying out under pressure.
They topped it up, ran the car up to temperature, pressure tested it, checked all the rads and hoses and couldn't find anything wrong, but they did find splattered dried coolant all round the header tank and filler cap as though it has been spraying out under 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 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.
Performed · outcome unconfirmed · Original poster
There didn't seem to be any reason for this but the coolant pressure cap was replaced anyway in case it was defective.
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.
Performed · outcome unconfirmed · Original poster
They topped it up, ran the car up to temperature, pressure tested it, checked all the rads and hoses and couldn't find anything wrong, but they did find splattered dried coolant all round the header tank and filler cap as though it has been spraying out under pressure.
They topped it up, ran the car up to temperature, pressure tested it, checked all the rads and hoses and couldn't find anything wrong, but they did find splattered dried coolant all round the header tank and filler cap as though it has been spraying out under 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 was supprised that the pressure test didn't show this but it was a very very slow leak I guess
Check rads and hoses and couldn't find anything wrong
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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.
Performed · outcome unconfirmed · Original poster
They topped it up, ran the car up to temperature, pressure tested it, checked all the rads and hoses and couldn't find anything wrong, but they did find splattered dried coolant all round the header tank and filler cap as though it has been spraying out under pressure.
They topped it up, ran the car up to temperature, pressure tested it, checked all the rads and hoses and couldn't find anything wrong, but they did find splattered dried coolant all round the header tank and filler cap as though it has been spraying out under pressure.
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.
Performed · outcome unconfirmed · Original poster
They topped it up, ran the car up to temperature, pressure tested it, checked all the rads and hoses and couldn't find anything wrong, but they did find splattered dried coolant all round the header tank and filler cap as though it has been spraying out under pressure.
They topped it up, ran the car up to temperature, pressure tested it, checked all the rads and hoses and couldn't find anything wrong, but they did find splattered dried coolant all round the header tank and filler cap as though it has been spraying out under 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.
7 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: 20261026T163944Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hi all,
My mum has a 2005 Boxster 3.2S with about 35k miles on the clock, and it appears to be losing coolant.
I took it out for a bit of a thrashing and when I got home got out of the car I caught a whiff of that distinctive hot coolant smell. I checked the coolant level and it was well down approaching minimum.
The car was due a service in the next couple of weeks so I asked the garage to check it out.
They topped it up, ran the car up to temperature, pressure tested it, checked all the rads and hoses and couldn't find anything wrong, but they did find splattered dried coolant all round the header tank and filler cap as though it has been spraying out under pressure.
There didn't seem to be any reason for this but the coolant pressure cap was replaced anyway in case it was defective.
I'll keep an eye on the level, but for the moment can anyone think of any reason this is happening?
Can only be escaping out of the system to air or the engine
On my 2.5 box the car suffered slow coolant loss with the light coming on & flashing every few weeks. I had the whole system pressure tested, nothing, thought I was going mad. Then I saw the odd drop under the radiator, which then became a trickle. Quite a relief to pay £500 to get the radiator swapped. On a 10 year old car that's quite likely to be the culprit. I was supprised that the pressure test didn't show this but it was a very very slow leak I guess
Rads or rad without a doubt.
Let it run until the fans cut in and stick your nose around the front end near the grills.
Might be worthwhile swapping the expansion tank cap also as these can be troublesome as they get older.
Good luck.
Hi There are two coolant caps on 987, one in boot and pressure cap on expansion tank in engine bay, have a closer look at front coolant pipes next to steering rack as these leak on a lot of cars i have in for service, and had one blow the pipe of off the aluminium pipe due to bad corrosion of the metal pipe.
Chris
NinjaPower said:
Hi all,
My mum has a 2005 Boxster 3.2S with about 35k miles on the clock, and it appears to be losing coolant.
I took it out for a bit of a thrashing and when I got home got out of the car I caught a whiff of that distinctive hot coolant smell. I checked the coolant level and it was well down approaching minimum.
The car was due a service in the next couple of weeks so I asked the garage to check it out.
They topped it up, ran the car up to temperature, pressure tested it, checked all the rads and hoses and couldn't find anything wrong, but they did find splattered dried coolant all round the header tank and filler cap as though it has been spraying out under pressure.
There didn't seem to be any reason for this but the coolant pressure cap was replaced anyway in case it was defective.
I'll keep an eye on the level, but for the moment can anyone think of any reason this is happening?
Be sure the radiator fans both come on when the engine gets hot enough and both fans blow the same amount of air and it is the same temperature.
You can do a poor man's pressure test. Be sure the coolant level is good. Not too full. Not too low. Check this with the engine dead cold. Be sure you get the cap on properly and sufficiently tight.
With the A/C off start the engine and drive the car around town until the engine is fully up to temperature.
Back home raise the RPMs to say 1000 or 1200 and hold until you hear or a helper hears the radiator fans come on. Shut off the engine.
The heat load will raise the coolant temperature and pressure and this can really expose a leak that might otherwise remain hidden.
You can place a tent of alum. foil over the fluid bay and the coolant tank in the engine compartment (if there is one). If there is any leak vapor will condense on the underside of the foil.
This is a source reference. Confirm exact model applicability in the original material.
