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Porsche Forum Australia

Decel Valve

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6 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHDecel Valve

Leading reported evidence

Use 43 plus year old component

Suggestion or failed attempt

No successful repair reported for this finding.

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Suggestion

I think it would be a false economy buying any used, 43 plus year old component with a rubber diaphragm exposed to fuel vapor.

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Decel Valve
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Leading evidence: 'Use 43 plus year old component' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Use 43 plus year old component' (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 · 6 captured posts examined · 1 partial discussions

Frequently discussed actions (1)

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Use 43 plus year old component

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

I think it would be a false economy buying any used, 43 plus year old component with a rubber diaphragm exposed to fuel vapor.

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Decel Valve
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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.

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

  • Porsche Forum Australia: 1 discussions

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Generation: 20261027T064914Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hello All I have been attempting to track down a decel valve for my SC. Not available from larger parts vendors here or in the States and lead time ex Germany is 3-5 weeks. Any clues re lesser known sources?

POST 2Original post

I was surprised to think that Pelican wouldn't have one, as they seem to have almost everything. https://www.pelicanparts.com/More_Info/91111022031.htm?pn=911-110-220-31-OEM&bc=c&SVSVSI=0566 Sorry if this is unhelpful...

POST 3Original post

Quotes source post: 411044

Have you considered running it without a decel valve?  My understanding is that it is there to bleed air around the closed throttle butterfly to reduce hydrocarbon emissions when you suddenly come off the throttle at high rpm.  May even be nicer to drive without it activated. Just to be clear, you are referring to the decel valve and not say the auxiliary air valve as I wouldn't have thought most people would notice a faulty decel valve?

POST 4Original post

If you're still looking, I'd also try the Porsche dismantlers and independent specialists rather than the larger parts vendors. A good used OEM decel valve is often a better option than waiting weeks for a new one. It would also help if you could post the Porsche/Bosch part number and your SC's model year, as some of the CIS components interchange between years. Someone on the forum may even have a spare sitting on the shelf.

POST 5Original post

I think it would be a false economy buying any used, 43 plus year old component with a rubber diaphragm exposed to fuel vapor.

POST 6Original post

Don’t waste your time, bypass it, if I find one faulty in the shop, I just disconnect it, makes for a snappier response slightly when coming off the throttle without it.

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