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Carbon Tank Control Valve - Solved Idle Issue

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2 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHCarbon Tank Control Valve - Solved Idle Issue

Leading reported evidence

Replace after the valve

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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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

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
After the valve was replaced the car idles just perfect at 750 with a/c off.
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Carbon Tank Control Valve - Solved Idle Issue

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Leading evidence: 'Replace after the valve' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace after the valve' (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.

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1 matching discussions · 2 captured posts examined · 0 partial discussions

Compare 2 other evidence results

Replace carbon tank control valve

Performed · outcome unconfirmed

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
Replaced the Carbon Tank Control Valve today on my 99 C2 and solved low idle/stall issue.
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Carbon Tank Control Valve - Solved Idle Issue

Replace valve since the hose connected

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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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
it�s a 15 minute job to replace the valve since the hose connected on the left side needs to be sliced down the middle to remove from the valve (new valve doesn�t come with a hose).
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Carbon Tank Control Valve - Solved Idle Issue

Frequently discussed actions (3)

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

Replace after the valve

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
After the valve was replaced the car idles just perfect at 750 with a/c off.
Original post Read captured discussion
Carbon Tank Control Valve - Solved Idle Issue

Replace carbon tank control valve

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
Replaced the Carbon Tank Control Valve today on my 99 C2 and solved low idle/stall issue.
Original post Read captured discussion
Carbon Tank Control Valve - Solved Idle Issue

Replace valve since the hose connected

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
it�s a 15 minute job to replace the valve since the hose connected on the left side needs to be sliced down the middle to remove from the valve (new valve doesn�t come with a hose).
Original post Read captured discussion
Carbon Tank Control Valve - Solved Idle Issue

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.

2 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: 20261026T152433Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Replaced the Carbon Tank Control Valve today on my 99 C2 and solved low idle/stall issue. History - Developed a situation this summer where the engine would either stall or nearly stall at idle. Interestingly, the idle would be fine with the a/c on. 800rpm no problem. Shut off the a/c and the idle would drop a lot and sometimes stall. Since it was summer the A/C was always on. I read a while back this little valve can cause idle issues. I also read if it�s starting to fail you can hear it click repetitively. Mine was clicking so I ordered the valve (no idle issues at the time). Finally got around to installing today. it�s a 15 minute job to replace the valve since the hose connected on the left side needs to be sliced down the middle to remove from the valve (new valve doesn�t come with a hose). I just reused the hose and put a clamp on it. Works great. After the valve was replaced the car idles just perfect at 750 with a/c off.

POST 2Original post

Quotes source post: 17771379

You don't happen to have the parts NO ?

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