POST 1 / ORIGINAL POSTEROriginal post
My idle is bouncing lately. Not at starts, but when warm and in neutral. Bounced between 500 and 1000 rpm. Any help? thanks!
5 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
Discussion summary
YOUR RESEARCHidle surge?
1 matching discussions were examined; no attributable action/outcome evidence was detected. No consensus or repair conclusion is claimed.
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1 matching discussions · 5 captured posts examined · 0 partial discussions
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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.
5 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
- Rennlist: 1 discussions
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Generation: 20261027T011819Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
POST 2 / ORIGINAL POSTEROriginal post
I've seen in the archives, some suggestions of bad gas causing this. I would think that the problem would be consistent. Which it's not.
POST 3Original post
If your car is a MY99 C2 (not C4)... I would look for vacuum leaks or loose hoses. Next I would look at the throttle intake for carbon build up and lastly the idle stabilizer and throttle switch.
POST 4Original post
I get this on my 2000 C2 cab. It's been like that since before the last service (24,000). Loren, this carbon build up at the intake valve. Does this signify a problem or is it normal?
POST 5Original post
Could it be the O2 sensor? This is a common problem on 993/911's. regards,
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