4 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHAIR in coolant system question
Leading reported evidence
Run engine
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
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Performed · outcome unconfirmed · Original poster
So I did like you said and closed the valve, ran the engine for about 15 minutes (until the engine was indicating normal temps, the needle between the 8 and 0).
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 · Original poster
I am going to drive the car again, get it up to temp, park, ensure valve is closed and test again in 2 or 3 hours this time and check for pressure amount.
Leading evidence: 'Run engine' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check pressure amount' (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 contain suggestions
1
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Suggestion · Original poster
I am going to drive the car again, get it up to temp, park, ensure valve is closed and test again in 2 or 3 hours this time and check for pressure amount.
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 · Original poster
Why does air in the system cause it to run hotter?
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.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Check pressure amount
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 · Original poster
I am going to drive the car again, get it up to temp, park, ensure valve is closed and test again in 2 or 3 hours this time and check for pressure amount.
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 I did like you said and closed the valve, ran the engine for about 15 minutes (until the engine was indicating normal temps, the needle between the 8 and 0).
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.
4 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: 20261027T031046Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I currently have another post regarding coolant level and temperature issues and I didnt want to add this question to that post.
It was pointed out that air in the coolant system can lead to higher than normal operating temps as indicated by the temp gauge in the dash. I wanted to learn the logic or science behind this. Why does air in the system cause it to run hotter? I would appreciate if someone could answer this. Simple terms are cool, dont need hardcore technical details
Thanx, Peter
Based on what you said in your previous post, your engine temps ARE NORMAL for the 3.4 engine. NOT high, but NORMAL. The 3.4 will regularly run with coolant temps of 215 and higher in 90 degree temps when driving around town.
How did the pressure test turn out?
1999 Porsche 911, you respond so fast, i love it!!!
I ended up leaving the bleeder valve open all night and when I tested this morning, of course no hissing noise. So I did like you said and closed the valve, ran the engine for about 15 minutes (until the engine was indicating normal temps, the needle between the 8 and 0). I turned off the engine. so far it has been 3 hours. I am going to wait 2 more hours (1 pm pst) and then test. I will post of the results at that time. I do really hope it is that simple of an issue.
I know you stated that my temps are normal given the air temp and all. but the thing is didnt do it before. it was better BEFORE the change in the reservoir tank. At that time the needle played a little but the light never turned on.
Thanx, Peter
Well, it has been five hours since I turned off the engine and when I went to open the expansion tank cap there was in fact some hissing, not a lot, but there was some pressure release. I suspect that if i had attempted to open the cap at the 2 or 3 hour mark instead of 5 hours, then there would be a marked increase in pressure. I am going to drive the car again, get it up to temp, park, ensure valve is closed and test again in 2 or 3 hours this time and check for pressure amount. I am hopeful at this point that I dont have leak. Any feedback?
thanx, Peter
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