4 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHcoolant question
Leading reported evidence
Run engine
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
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0
Unsuccessful attempts
1
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Read evidence and context
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Performed · outcome unconfirmed · Original poster
Pulled up metal tab on bleeder, and ran engine to get temperature up.
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 'Fill after repairs' (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.
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Suggestion
If you filled after repairs that is a different story...
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Suggestion
The pro's (including Porsche dealers) use a vacuum system to drain and refill the system to ensure no air pockets or leaks - instead of relying on the bleeder valve.
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Suggestion
The pro's (including Porsche dealers) use a vacuum system to drain and refill the system to ensure no air pockets or leaks - instead of relying on the bleeder valve.
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
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Generation: 20261027T060112Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
added coolant today to my new to me 01 996 c2. Pulled up metal tab on bleeder, and ran engine to get temperature up. Upon shut off, i pushed metal tab over, but the plastic stem it's attached to stayed up. I presume this is from coolant or air pressure build up, and eventually upon cool down, it will return to it's original position? (Cannot check it now, it's at the summer house)
Correct. It will go down when cool. It is safe to leave it in the up/locked position for a few days during regular driving. Although that doesn't ensure 100% you won't have air pockets.
If you just added coolant and it wasn't too low nothing to worry about. If you filled after repairs that is a different story...
Yep, pretty much... just drive it and it will open the bleeder valve on it's own.
There is a very specific procedure in the work shop manual regarding bleeding the cooling system, which includes raising the bleeder valve before first cold start (and gets more complicated depending on how the system accepts coolant).
The pro's (including Porsche dealers) use a vacuum system to drain and refill the system to ensure no air pockets or leaks - instead of relying on the bleeder valve.
If it didn't get too far below the low mark in the expansion tank I wouldn't worry about it. Just drive the car and it will sort things out (and probably no air pockets).
Keep an eye on the coolant level and make sure it is not loosing any coolant, and keep it just below the max level.
OH, and don't open the cap if the coolant is warm or hot!!!! LOL.
If you are just adding coolant and it was a little low I wouldn't worry and just drive the car, keep an eye on it.
But if it is steadily losing coolant you need to find the source of the leak, perhaps the tank (common), a hose, the cap, or an intermix condition. A vacuum system can help isolate a leak.
This is a source reference. Confirm exact model applicability in the original material.
