19 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHDiappearing Coolant
Leading reported evidence
Check coolant cap - nothing
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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Discussions that performed work without a confirmed outcome
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Performed · outcome unconfirmed · Original poster
Checked the coolant cap - nothing to report there, but i was surprised how under pressure it was.
Leading evidence: 'Check coolant cap - nothing' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'culprit.)' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Check any foaming or white film' (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 there was almost no coolant and even though i
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
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Performed · outcome unconfirmed · Original poster
when i checked there was almost no coolant and even though i filled it with nearly 3/4 bottle of the coolant i had left, it still didn't come up to the minimum mark.
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.
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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.
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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.
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Performed · outcome unconfirmed
I had the tank and the cap replaced, that was not a big deal, and since then everything has been fine.
Check there was almost no coolant and even though i
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
when i checked there was almost no coolant and even though i filled it with nearly 3/4 bottle of the coolant i had left, it still didn't come up to the minimum mark.
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
As long as coolant and oil run where they are supposed to run, without mixing with each other and as long as the engine temp stays normal, everything is fine.
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
As long as coolant and oil run where they are supposed to run, without mixing with each other and as long as the engine temp stays normal, everything is fine.
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.
19 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.
1 acknowledgements have no verified action link; they do not establish a repair result.
Morning guys,
a few days ago i noticed the low coolant warning came on my dash, temperature went higher and the red light on the temp gauge starting blinking.
when i got home, i opened the hood and noticed the coolant was below the minimum line. so i picked up some coolant and filled it again. now about a month later the problem has returned. problem was solved or so i thought.
this morning the warning came back. when i checked there was almost no coolant and even though i filled it with nearly 3/4 bottle of the coolant i had left, it still didn't come up to the minimum mark. but i had to drive into work, so i drove it anyways. the car runs fine and there doesn't seem to be any problem and i'm not sure if this is because i drive is so much traffic everyday. has anyone else experienced this?
the car did have an RMS replaced a few years ago. i did one trackday a few months ago (where the exhaust kept smoking on startup). ANd the coolant cap looks pretty clean to me.
do i need to take this into the dealer? what am i looking at in terms of cost? any help appreciated.
UPDATE UPDATE UPDATE
So after another week of driving I checked it again - all the coolant is still there... last week it drank a full bottle, this week nothing - what gives!?
Checked the oil and cap - both seem fine, no weird colours or stains, just plain old oil.
Checked the coolant cap - nothing to report there, but i was surprised how under pressure it was. some coolant shot out of it when i opened it (kind of like a pressure cooker would). i just checked it again and i could hear a very low hiss as if it was still under pressure. so i took the cap off and put it on again, but didn't apply superman pressure this time and the hiss went away. so now i'm not sure if i should be really giving it the full beans when i put the cap back on or not. when i supertighten it i hear a hiss, but maybe it needs to be that tight to prevent leaking? any thoughts guys?
on a sunday morning, when i find that perfect twisty road, this car is pure bliss, but as a daily driver its pretty brutal. and given how everytime some minor issue pops up, there is a chance that the engine needs replacing. i can't live with that kind of stress from a car i need to use everyday.
so i'm thinking about trading her in for something else.... please talk me out of it...
General consensus on this is a defective coolant cap, or cracked coolant tank both of which are common issues.
About $ 20.00 should do the trick if it is the cap, and that is what you should change first. (Many people on this forum say that if the part number ends with "00" on the cap then that is likely the culprit.)
Pete
Based on the quantity lost however... the tank has to be a high probability here.
Look under the car and see if there's any white crud on the exhaust under the coolant tank area.
The coolant hits the hot exhaust and evaporates before hitting the ground in many cases.
New tank is $600 + for dealership fitment.
"i did one trackday a few months ago (where the exhaust kept smoking on startup)."
smoke on the start up and massive coolant lost could mean you have coolant leaking into the combustion chamber.... I don't know if this is a common problem with these engines...
or it could be just a bad cap and overfilled oil. if you're right at full on the oil, the engine has been known to smoke at the track.
just submitting the non-worse case scenario.
Open the oil filler cap and check if there is white or yellowish foam on the tube. Do not panick if you find some. It is normal that water condensates and evaporates creating some foam in the tube.
Foam accumulation about the size of your thumb is perfectly normal if your car has been driven, say, 5000 miles after an oil change.
UPDATE
So after another week of driving I checked it again - all the coolant is still there... last week it drank a full bottle, this week nothing - what gives!?
Checked the oil and cap - both seem fine, no weird colours or stains, just plain old oil.
Checked the coolant cap - nothing to report there, but i was surprised how under pressure it was. some coolant shot out of it when i opened it (kind of like a pressure cooker would). i just checked it again and i could hear a very low hiss as if it was still under pressure. so i took the cap off and put it on again, but didn't apply superman pressure this time and the hiss went away. so now i'm not sure if i should be really giving it the full beans when i put the cap back on or not. when i supertighten it i hear a hiss, but maybe it needs to be that tight to prevent leaking? any thoughts guys?
on a sunday morning, when i find that perfect twisty road, this car is pure bliss, but as a daily driver its pretty brutal. and given how everytime some minor issue pops up, there is a chance that the engine needs replacing. i can't live with that kind of stress from a car i need to use everyday.
so i'm thinking about trading her in for something else.... please talk me out of it...
Also one more thing.... is it okay if i topped of the coolant with coolant i bought at the local auto store? now i'm reading all these threads telling me that mixing the oem coolant with the new coolant can be a disaster.... FAAAAACKKKK!!! this is driving me crazy... with this bloody car, ANYTHING i do could blow it up!
Has anything been done to the car that could let air into the coolant system? Maybe a radiator replacement, or broken hose that was repaired? Once air is in the system it will do exactly what you describe until you vent all of it.
Get a NEW replacement coolant cap - your cap may not be venting correctly - you'd not see anything, but it could give you the symptoms you've seen.
$20 or so - best place to start
When I put a considerable amount of coolant back in the tank I open the bleed valve and take it out for a nice drive. Ive never had any problems with the suggested method.. as Loren suggests:
http://www.renntech.org/forums/index...hl=bleed+valve
I doubt you really lost all the coolant.
Depending on his method it may have worked just as well as the vacuum draw method.
When I did my 3rd radiator install I caught the coolant in a bucket and then re-used it. I lost a little and had to add a 3 or 4 quarts for the new radiator. So I added in what I could, then opened the bleed valve and ran the engine. After the car got warmed up and shut it off and waited for it to cool. Then I added more coolant (to the full level). I repeated that process a couple more times.
Then I drive the car with the bleed valve for about two weeks (don't worry about that Cup Cars do it all the time). I added a little more coolant ever few days until it stopped needing any. Since I have no overheating even at 100 degree plus temps I think there is little or no air in my engine.
Personally I think you are a bit over reacting about this. I had the tank and the cap replaced, that was not a big deal, and since then everything has been fine. My friend has every now and then some coolant disappearing and also appearing sometimes on his 996. Take into account that how the car is levelled has a great effect on coolant level. I noticed this when I had a leaking tank and the tank seemed to be completely empty. I drove to get some coolant fluid, the car worked just fine even though there was absolutely no fluid in the container. When I started adding fluid I noticed that the container is more than 1/3 full before pouring a drop of fluid into it.
These coolant problems seem to be very common with these cars and I wouldnt stress out too much about it. As long as coolant and oil run where they are supposed to run, without mixing with each other and as long as the engine temp stays normal, everything is fine.
I would have the coolant container cap changed. I also tighten the cap quite tight everytime. Keep a bottle of water (or fluid) in the trunk just in case.
By the way, when I had my tank replaced at the Auto Carrera (local Porsche Centrum), they topped the tank completely full. I asked about this and they said the excess fluid will come out, having the tank topped is not dangerous. I guess they topped it in case there were air trapped and the level would go down by itself.
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