18 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH996.1 Coolant Dump Issue
Reported repair
Combined work: Replace radiator + Run mixture
Reported resolution
1
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 report a fix
1
1 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 fix · Original poster
I replaced the radiator with Porsche Centre Perth about two months ago so don't know why they were blocked. So he took them off, ran a mixture to unclog them, put them back on, made sure to run the air pockets out, drove the car long and hard over two days, problem fixed.
Leading evidence: 'Combined work: Replace radiator + Run mixture' (1 discussions report resolution; 0 report an unsuccessful attempt). Across 1 matching discussions, The most frequently discussed action is 'Combined work: Replace radiator + Run mixture' (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 radiator + Run mixture', 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.
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
I had my coolant bottle replaced on my 996 - had a pinhole leak from a tiny split in the seam.
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 replaced the radiator with Porsche Centre Perth about two months ago so don't know why they were blocked.
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
There was a few guys on the 996 turbo page having the same issue, one replaced his radiator cap and fixed it the other replaced the whole overflow bottle and cap, apparently the overflow bottle are prone to splitting.
Outcome qualification: Negation, uncertainty or missing explicit repair resolution overrides the raw extraction signal.
Frequently discussed actions (10)
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Combined work: Replace radiator + Run mixture
1
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that report a fix
1
1 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 fix · Original poster
I replaced the radiator with Porsche Centre Perth about two months ago so don't know why they were blocked. So he took them off, ran a mixture to unclog them, put them back on, made sure to run the air pockets out, drove the car long and hard over two days, problem fixed.
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
There was a few guys on the 996 turbo page having the same issue, one replaced his radiator cap and fixed it the other replaced the whole overflow bottle and cap, apparently the overflow bottle are prone to splitting.
Outcome qualification: Negation, uncertainty or missing explicit repair resolution overrides the raw extraction signal.
Run mixture
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
So he took them off, ran a mixture to unclog them, put them back on, made sure to run the air pockets out, drove the car long and hard over two days, problem fixed.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Combined work: Replace radiator + Run mixture
1
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that report a fix
1
1 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 fix · Original poster
I replaced the radiator with Porsche Centre Perth about two months ago so don't know why they were blocked. So he took them off, ran a mixture to unclog them, put them back on, made sure to run the air pockets out, drove the car long and hard over two days, problem fixed.
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.
18 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 · 1 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261027T011819Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hi have had a recurring issue now with my 996.1 loosing coolant and in this latest occurrence, dumping all the coolant after a 20 minute drive after I switched the car off, not at traffic lights however coolant leak were noted at the lights). The strange thing is that that the engine temperature gauge was normal at 12 o'clock on the dial when this happened. It looks like the pressure was just so great that it bypassed the coolant cap and pissed all the coolant out (second time this has done this). Over the past three months I have had the water pump, oil separator, heat exchange, and engine fully rebuilt so I thought that I'd be driving a car near perfect but apparently not. Does anyone have any thoughts on this matter, experience with the same issue, and possible solutions to fix this? Thanks a million!
It sounds like you have air pockets in the system. Try this..
1) Next to the coolant tank there is the expansion bleed valve - its black with a hinged silver D shaped lever on the top - lift this lever to its vertical position.
2) Refill your coolant tank to its max level with the correct 50/50 mix.
3) Drive the car for at least 5 km to get the coolant up to temp and the thermostat open.
4) Let the system cool completely - preferably overnight. You should see the level drop in the tank. Top up and repeat until the level stabilises.
You can drive with the D shaped bleed valve open for a few heat cycles to eliminate the air pockets. The secret is to get the thermostat open and then let the system cool completely - this may take several operations depending on how much air you have in the system.
Check this tip on water hoses rubbing & getting holes - from UK site:
http://www.911uk.com/viewtopic.php?t=42060&highlight=pipe
Cure is to install a 997 hose which has a better curve. It may not be your problem, but its worth checking for clearance anyway.
There was a few guys on the 996 turbo page having the same issue, one replaced his radiator cap and fixed it the other replaced the whole overflow bottle and cap, apparently the overflow bottle are prone to splitting.
Am just about to replace the coolant overflow tank on my 996, as they do get brittle with age and sunlight apparently. I haven't had any problems with leakage or overheating, but has been recommended to me as a good precautionary measure.
I have seen coolant leak issues in my 996 and 991 - in both cases it was a pinhole crack in the plastic tank. The blue tank cap is also a known issue on the 996/7/1
When I did the 986 bottle the dealer wanted $750 for the bottle. I can't recall which USA supplier I bought from but it was $222 delivered. I bought extension/remote hose clamp pliers for $100 and did the job myself.
Just to add you need these pliers to do the AOS as well.
Edited to the correct name of the pliers.
Bit more expensive now, particularly with the +10% GST on imports now. AH price was not far off the EuroFCP / Pelican price, so am about to order from them.
@firstone
can you tell me more about the hose clamp pliers needed for DIY?
Diagnostic steps are usually:
- Pressurise system + find leak
- Drain coolant + fix leak
- Vacuum re-fill (best way to go and ensures no air gets trapped in the system)
I had my coolant bottle replaced on my 996 - had a pinhole leak from a tiny split in the seam. I'd recommend a genuine tank as well, have read a lot on rennlist about failed aftermarket ones.
Ok, so I got my car back from my mechanic and it seemed like the main problem was that the coolant wasn't flowing through the radiator - caused by some blockage.
I replaced the radiator with Porsche Centre Perth about two months ago so don't know why they were blocked.
So he took them off, ran a mixture to unclog them, put them back on, made sure to run the air pockets out, drove the car long and hard over two days, problem fixed. Got it back today and so far so good.
This is a source reference. Confirm exact model applicability in the original material.
