21 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHA new coolant tank cap design?
Leading reported evidence
Replace cap about two years ago
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.
Leading evidence: 'Replace cap about two years ago' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'when your temperature gauge starts' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Check last two numbers' (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 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
The coolant reservoir was replaced just prior to my purchase of the car two weeks ago.
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
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Performed · outcome unconfirmed
I've not heard that it is required an "02" be replaced right away.
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
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Suspected cause
Although your cap may be perfectly fine right now, and may be for some time to come, it is usually the first suspect when your temperature gauge starts to read higher than normal for a given known driving condition.
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.
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
What I would suggest is replacing your original "00" cap with an "04" cap and then making a wristwatch out of the "00" cap - women will swoon whenever they see you and will always be asking you what time it is.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
when your temperature gauge starts
No successful repair reported for this finding.
0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context
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
Although your cap may be perfectly fine right now, and may be for some time to come, it is usually the first suspect when your temperature gauge starts to read higher than normal for a given known driving condition.
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.
21 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: 20261026T174436Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Stopped by a local indy who said there as a new update to the coolant tank cap (996 106 447 04) and recommended it.
I haven't heard of anything new for at least a year or two. Anyone else hear this or is it a bit of fantasy?
New cap with part # ending in "02" or "04" has been around a while. ("03" never made it out I believe.)
If you have older cap just replace it with a new one. Why wait for the old one to leak?
If you have an "02" and it is not leaking you can probably keep it in service. I've not heard that it is required an "02" be replaced right away.
But a coolant cap is relatively inexpensive so an "upgrade" to an "04" might be ok. The cap makes a perfect Xmas stocking stuffer gift, too. Hint. Hint. Yes, two hints as I have two Porsches and both will have stockings hung over the fireplace come Xmas.
I thought he must be talking about the "previous redesign" that's been out for a while, but he made it sound like it just came out. Only wanted $14 for it, so wouldn't fund a trip to the Bahamas....
Does Santa read RL??? If so, I'm starting a new thread...
I recently purchased a new cap for my car and its number ends in "04". AFAIK, this is the newest cap available.
Got one from Suncoast last week or so, $15, 04 also. Mine is currently an 02 with an updated tank in '07, and it had a little build up of white around the base, so since I was putting in an order, I figured why not?
Where can you find the part number on the cap? Mine only shows PA6T/XT-GF35 but after googeling around I think that's just the type of plastic material it's made from.
For Sale: Apparently the world's only "03" coolant cap.
Price: 1MM USD
Think of how you will be able to brag to your friends and colleagues that you have the missing link of coolant caps
I took a pic of it the last time I was out working on the car, and have been meaning to look it up. This thread seemed like a good time to re-visit, and who knew, I've got the only one!
Sorry, Invius, you are going to have to split that million with me because I just looked and mine is also a .03. Maybe they were just a short run. I replaced my cap about two years ago.
Since there is another update, guess I will have to check it out and get one.
@VGM, were you on the recent episode of "Hoarders?" Who keeps that kind of stuff?
Hmm, no leak yet (crosses fingers). When I bought my C2, it had already had the expansion tank replaced, so apparently at that point, Porsche hand-crafted 1 of 2 coolant caps, and called them the 03. They sent the other one to another Floridian, named Thundertub...and that is how the legend of the 03 cap was born. It is still for sale, the price is now 500k, as it is 1 of 2.
The "00" caps were known to attract beautiful women, and are therefore very collectible.
What I would suggest is replacing your original "00" cap with an "04" cap and then making a wristwatch out of the "00" cap - women will swoon whenever they see you and will always be asking you what time it is.
Smarty Jones,
Although your cap may be perfectly fine right now, and may be for some time to come, it is usually the first suspect when your temperature gauge starts to read higher than normal for a given known driving condition. What that indicates is that the system is not pressurized properly when the coolant is hot. If there are no puddles under the nose of the car (radiators) or gushing out from under the engine (water pump) then the cap is often the culprit. And most 996's are old enough now to need a new cap if you are still running a .00.
If your coolant expansion tank plastic is not pearly white and has a yellow or brown look, then that may need replacement soon as well (before the plastic cracks).
Both of these could almost be considered "Regular Maintenance" items based on the frequency of questions about these on this forum. There is no basic guideline that is mileage specific because of the extreme variations in potential climates in which the cars are owned, and the driving style of the driver.
Thank you. That's a great explanation. The coolant reservoir was replaced just prior to my purchase of the car two weeks ago. I know that these are dumb questions but I've never owned a Porsche before and even though I've owned (well, still do) Ferrari's, it's like a totally different world, mechanically. Thanks again. I will get .04. I guess that a new cap did not come with the new reservoir bottle.
VGM 911 - I'm taking that .00 cap, making a gold chain out of it and going to the clubs. I promise I will take pics of all the attractive women and post them back here. Can't wait.
This is a source reference. Confirm exact model applicability in the original material.
