13 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHAir bubble in cooling system?
Leading reported evidence
Replace thermostat and water pump
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
1
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Performed · outcome unconfirmed
The thermostat and water pump were replaced at 69k miles less than 3 years ago.
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Suggestion
One thing to add when this began the first thing I did was check coolant level which was a lttle low and I added maybe a pint of coolant that brought it back to the appropriate level.
Leading evidence: 'Replace thermostat and water pump' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check coolant level' (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
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Performed · outcome unconfirmed
My son's father in law, has a 2007 911 Carrera S with +/- 50k, and I replaced these components, along with the AOS with the associated hoses (car started smoking hevily during start ups), but I used a UView vaccum tool that made the bleeding job easy.
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
My son's father in law, has a 2007 911 Carrera S with +/- 50k, and I replaced these components, along with the AOS with the associated hoses (car started smoking hevily during start ups), but I used a UView vaccum tool that made the bleeding job easy.
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
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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
One thing to add when this began the first thing I did was check coolant level which was a lttle low and I added maybe a pint of coolant that brought it back to the appropriate level.
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.
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Suggestion
Be sure that the fill is done with an "air lift" or "vacuum fill" system, otherwise that WILL leave air pockets in the system.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Check coolant level
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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
One thing to add when this began the first thing I did was check coolant level which was a lttle low and I added maybe a pint of coolant that brought it back to the appropriate level.
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
My son's father in law, has a 2007 911 Carrera S with +/- 50k, and I replaced these components, along with the AOS with the associated hoses (car started smoking hevily during start ups), but I used a UView vaccum tool that made the bleeding job easy.
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
eefruehling, you have to realize that your car it's about 16-18 years old, and on these engines the water pump is considered a wear item, perhaps you may want to consider replacing the water pump & thermostat for your piece of mind.
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
When I vac filled mine after a coolant pump replacement I was confident it was properly filled and only added maybe 250 ml or so after a few test drives.
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
My son's father in law, has a 2007 911 Carrera S with +/- 50k, and I replaced these components, along with the AOS with the associated hoses (car started smoking hevily during start ups), but I used a UView vaccum tool that made the bleeding job easy.
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.
13 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Planet-9: 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: 20261027T022239Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
987.1
2.7 with 5sp MT. 80,000 miles. i have an intermittent problem that happens when the car is started from cold. The car starts and runs but the temperature gauge does not move and the warning light blinks and I get a cooling failure warning. I will keep driving and then the needle will suddenly pop up to 175 and the light goes out and everything is fine. If I stop and restart with the car warm it seems to be fine.
One thing to add when this began the first thing I did was check coolant level which was a lttle low and I added maybe a pint of coolant that brought it back to the appropriate level.
Is it just air in the system? How do I bleed the system? Or should I just get a flush and fill?
Thank you for your advice.
Everett
Coolant is probably just a little low. The fluid contracts when cold, and expands when warm... so if you're just below the switch level, a cold motor will set off the error, then once warmed will rise above the switch level. Typically this happens in colder weather, obviously, but if you park the car over the winter you may not notice it as often.
Just add a little coolant mix. Or, if you don't have any, you can just add a little distilled water to bring it up. Don't add too much... just a little at a time.
As for flush/fill, if that hasn't been done ever, then you should do that as well. Be sure that the fill is done with an "air lift" or "vacuum fill" system, otherwise that WILL leave air pockets in the system.
To just burp a small air pocket I remove the engine cover and open the valve on the expansion tank. If the engine is cool, open that cap and add coolant directly into the expansion tank.
Engine not running, engine cold. Opening it up while hot will not let you know how much to put, and may also spit out hot fluid.
It's a regular car - in most cases, never open the coolant system when hot, as this can spew hot fluid on you and make quite a mess (as well as possible burns).
Concerning ‘burping’ an air pocket or adding coolant directly, would slowly ‘cracking’ the filler cap in the trunk do the same thing? Understandably, this would be best performed after letting the engine cool slightly, never right after shutting down the engine. And I would hold a rag over the cap and slowly release pressure in small increments. I’m not familiar with the plumbing of the cooling system, but does the fill pipe in the trunk run, and connect, to the expansion tank? So would that make ‘burping’ or adding coolant at either location lead to the same results? While not excessively difficult removing the engine cover, it is not one of my favorite things to do and if I could perform these same things from the filler cap in the trunk it would make life easier.
My understanding is that If there is an air pocket in the expansion tank, it is not going to be displaced by adding liquid at the trunk filler port. Where would the air go? It can't go down and then gurgle up at the filler.
eefruehling, you have to realize that your car it's about 16-18 years old, and on these engines the water pump is considered a wear item, perhaps you may want to consider replacing the water pump & thermostat for your piece of mind. If you are happy with your car, and planning to keep it for a while, I would consider as well a coolant tank that way you will know that you have a sound cooling system.
My son's father in law, has a 2007 911 Carrera S with +/- 50k, and I replaced these components, along with the AOS with the associated hoses (car started smoking hevily during start ups), but I used a UView vaccum tool that made the bleeding job easy.
PS: Previously, I did the same job on my old 987CS and by far, it was way easier than working on the 911 that is missing the access covers for the engine.
Ideally you want to vacuum fill the system. I k now some folks suggest the old school heat cycle and open, add coolant etc., but with this engine I wouldn't take a chance. When I vac filled mine after a coolant pump replacement I was confident it was properly filled and only added maybe 250 ml or so after a few test drives.
Thank you everyone! The thermostat and water pump were replaced at 69k miles less than 3 years ago. The water pump pulley sheared off and threw the belt one month after I bought the car. I did a PPI but you can’t catch everything! I drove the car all weekend and opened the expansion tank slightly after it was cooled down to 110 and let some air out. It drove fine for the
next
two days. I’ll continue to monitor. It’s been 3 years and 11,000 miles so maybe it’s time to just do a flush and fill to get the car in shape for summer driving.
