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sudden power loss when going up bumps - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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YOUR RESEARCHsudden power loss when going up bumps - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Leading reported evidence

Replace mass air flow sensor

Performed · outcome unconfirmed

No successful repair reported for this finding.

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Reported fixes: 0
Unsuccessful attempts: 1
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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: 1

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Performed · outcome unconfirmed · Original poster
My reason for thinking its MAF-related is that I have had the issue before and replacing the MAF fixed it - for about 6 months.
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sudden power loss when going up bumps - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Outcome qualification: Negation, uncertainty or missing explicit repair resolution overrides the raw extraction signal.

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Leading evidence: 'Replace mass air flow sensor' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'its' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Replace mass air flow sensor' (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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1 matching discussions · 1 captured posts examined · 0 partial discussions

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its

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No successful repair reported for this finding.

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Identified cause: 1
Suspected cause: 0
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Discussions that suspect 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.

Suspected cause · Original poster
This all seems to me to point to a bad electric connection and I suspect its with the MAF sensor or its connection.
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sudden power loss when going up bumps - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Frequently discussed actions (1)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Replace mass air flow sensor

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
My reason for thinking its MAF-related is that I have had the issue before and replacing the MAF fixed it - for about 6 months.
Original post Read captured discussion
sudden power loss when going up bumps - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Outcome qualification: Negation, uncertainty or missing explicit repair resolution overrides the raw extraction signal.

Reported and suspected causes (1)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

its

No successful repair reported for this finding.

0
Identified cause: 1
Suspected cause: 0
Reported fixes

Read evidence and context

Discussions that suspect 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.

Suspected cause · Original poster
This all seems to me to point to a bad electric connection and I suspect its with the MAF sensor or its connection.
Original post Read captured discussion
sudden power loss when going up bumps - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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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.

1 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

986Forum: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 1 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261027T051247Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I did a bit of searching but couldn't find a reference to a problem like this. I m hoping someone has come across it. My'99 986 has developed an issue where I get intermittent power losses that seem to be more likely if I go over a bump in the road. In addition, they seem to increase as the weather gets warmer. This all seems to me to point to a bad electric connection and I suspect its with the MAF sensor or its connection. The obvious way to test this would be to drive without the MAF but, as I said, its intermittent and I dont want to drive for too long without a MAF. My reason for thinking its MAF-related is that I have had the issue before and replacing the MAF fixed it - for about 6 months. Back then it was violent enough to throw a MAF fault code and also get me booted off the track during a DE, but at the moment its not triggering the CEL. Three possibilities I can think of that could cause this: 1) Bad MAF sensor - again (I didnt buy OEM - maybe the cheaper ones are prone to failure, but do they typically fail in this way?) 2) Bad wiring harness (arrrrghhh!!! - I really hope not) 3) a leak in the air intake downstream from MAF - not sure if this would cause the symptoms Im experiencing Thanks for any insight ps. I meant 'over bumps' not 'up bumps'. No idea what I was thinking there

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