fullymatted.
Back to search
Rennlist

help! Problem with revving

Add to repair workspace
Open repair workspace
Original source
10 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHhelp! Problem with revving

Leading reported evidence

Check any loose or split hoses

Suggestion or failed attempt

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 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

did you check for any loose or split hoses?

Original post Read captured discussion
help! Problem with revving
Read full discussion summary

Leading evidence: 'Check any loose or split hoses' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check any loose or split hoses' (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.

Read captured replies

1 matching discussions · 10 captured posts examined · 0 partial discussions

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.

Check any loose or split hoses

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

did you check for any loose or split hoses?

Original post Read captured discussion
help! Problem with revving
Coverage and how to read this overview

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.

10 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.

Outcome without a verified action link

So not sure what happened, I did accidentally stall the car before this, but I found this thread and the revving was just like this guy’s issue, I rally didn’t do anything and it fixed itself.

Original post Read captured discussion

No unique explicit quoted action; no causal link assigned

NEARBY ACTION · LINK UNVERIFIED

did you check for any loose or split hoses?

Nearby source post

Generation: 20261026T105141Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

hey guys, 1999 C2 here with just under 35k miles. Had it for a week now, but was driving it today and at a stop light it started revving up and down between 1k ( idle) and 2k on its own. Pulled over to a parking lot and shut the car off. Let it sit, restarted, still revving on its own. Was worried about driving it, but after shutting it off again and waiting, restarted and still was doing it, but decided to dive it home, after driving it about a quarter of a mile, the issue stopped and it was fine for the rest of the ride home. No other funny sounds or smells, Car was driving fine, any ideas? Thanks

POST 3Original post

Air leak? did you check for any loose or split hoses?

POST 4 / ORIGINAL POSTEROriginal post

So not sure what happened, I did accidentally stall the car before this, but I found this thread and the revving was just like this guy’s issue, I rally didn’t do anything and it fixed itself. https://rennlist.com/forums/996-foru...dle-surge.html

POST 6Original post

^^ sounds totally like the idle stabilization valve. The symptoms you describe mirror my own experience. You might be able to remove yours and clean it out but that might not fix the issue.

POST 7Original post

If the above suggestions don't help, another thing to check is the Mass Air Flow Sensor. A failure of the MAF or dirty intake could cause these symptoms as well. Just another suggestion

POST 8 / ORIGINAL POSTEROriginal post

Thanks guys, any risk in driving it?

POST 9Original post

Quotes source post: 15172899

Fix it first if you can

POST 10Original post

Quotes source post: 15172541

I love a nice white Porsche, beautiful car!

This is a source reference. Confirm exact model applicability in the original material.