18 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHCoolant Level and obsurd vanishings!
Reported repair
Replace coolant tank
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
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.
Leading evidence: 'Replace coolant tank' (1 discussions report resolution; 0 report an unsuccessful attempt). Across 1 matching discussions, the most frequently mentioned possible cause is 'leak at the new waterpump' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Replace coolant tank' (1 discussions). For that action, 1 discussions report a resolution and 0 report an unsuccessful attempt. The most frequently reported fix is 'Replace coolant tank', 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 report identifying 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.
Reported cause
- no obvious coolant loss; issue was a leak at the new waterpump.
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
2) The coolant cap was replaced under a recall - the old cap 'fails' and allows excess coolant to escape - later part # ends in 01 I believe
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 tank (+cap) and waterpump replaced end last year; coolant level dropped 6 months thereafter to min.
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 recently replaced the coolant tank and cap, and no signs of leak and absolutely no signs of intermix.
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.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
3 acknowledgements have no verified action link; they do not establish a repair result.
Outcome without a verified action link
He reported back in a couple of days and said he got a new cap and it solved the problem,
It seems that no matter what I do (topping the reservoir on a regular basis) the level of the coolant is at the Min. mark! What is going on? If there is a leak, it would eventually go below the Min mark. Any comments?
Many Thanks.
Check to see if you have any oil in the coolant. You can tell because it would of course be on top of the coolant. I have that problem which has led to an engine replacement which is being done now. Oil was going into the coolant and the coolant was going out the exhaust I think. I have a 2001 996 3.4 L engine with 57,000 miles, 4000 of which was track DE driving.
Have you had it replaced lately?
I was AMAZED at how much I had to add afterward because of bubbles when I had a flush and fill done. But it did finally stabilize.
On a COLD engine, fill it up to the top. Next time you run the engine to full warm, all air will be replaced with coolant when the engine cools overnight..... if that is your problem.
In the past I have had very slow coolant loss (as in max to min in over 6 months). I had recently replaced the coolant tank and cap, and no signs of leak and absolutely no signs of intermix. I eventually took the car to my mechanic to pressure test the system. After a few hours on the tester, absolutely no leaks. I chalked it up to air bubbles still working out (although I have heard that bubbles should not be a problem after a few drive cycles). BTW, I have a 99 tip with 81k.
Three items to note about the 996 coolant tank:
1) They have a habit of failing with small hairline cracks that slowly leak under pressure - often for months - before finally failing
2) The coolant cap was replaced under a recall - the old cap 'fails' and allows excess coolant to escape - later part # ends in 01 I believe
3) Even the updated cap is really easy to cross thread onto the tank, allowing coolant to leak out when pressurized - take a close look at the cap as it goes on.
CD - A guy posted a similar problem recently, but could smell coolant, after he had replaced the coolant tank. I asked it he had also replaced the cap and if he hadn't done so, the part number of the new cap would end in 01.
He reported back in a couple of days and said he got a new cap and it solved the problem,
but the new cap part number ended on 02
. Apparently there is a new version out there now.
I actually had a really slow coolant leak a few months ago. It was determined that it was coming from a porous engine case. Dealership applied some JB Weld type stuff to it and hopefully it will fix it for good. I will go back in a month or so to do another pressure test to confirm. If it didn't do the trick, I am going to be stuck with an engine case replacement.
I had my coolant tank (+cap) and waterpump replaced end last year; coolant level dropped 6 months thereafter to min. - no obvious coolant loss; issue was a leak at the new waterpump. Got my 2nd waterpump in 1 year (on warranty) - issue solved.
I learned today that there was a new tank introduced in 2000. So after that year it not very common the tank breakes down. But, the cap does more often. My car was loosing coolant so a unplanned visit to the Porsche shop was done this morning.
They tested the system with high pressure. Tank was ok, Then filled up with coolant. And put on a new cap. I did not have to drive the car into the shop... The mechanic did. As well as delivered it outside.
Cost in total 20.00 USD..:-)
Recommended....
www.porschecentersyd.se
