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EML and misfire code from cold start.

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3 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHEML and misfire code from cold start.

Leading reported evidence

Replace plugs and coil pack

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 1
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 report an unsuccessful attempt: 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.

Unsuccessful attempt
I've even had the car into service and replaced the plugs and coil pack on the offending pot 4 but no difference.
Original post Read captured discussion
EML and misfire code from cold start.

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Leading evidence: 'Replace plugs and coil pack' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace plugs and coil pack' (1 discussions). For that action, 0 discussions report a resolution and 1 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 · 3 captured posts examined · 1 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.

Replace plugs and coil pack

No successful repair reported for this finding.

0
Reported fixes: 1
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that report an unsuccessful attempt: 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.

Unsuccessful attempt
I've even had the car into service and replaced the plugs and coil pack on the offending pot 4 but no difference.
Original post Read captured discussion
EML and misfire code from cold start.

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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.

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

Planet-9: 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: 20261026T135432Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

I'm new to this forum but have read a lot of complaints about an intermittent 'fault' triggering the EML light and fault code related to misfire and random misfire. I'm posting because I share the same frustration having only owned my Cayman S 987.1 2006 52k for a few weeks. But have found a work round which might help. It's only a problem at completely cold start and not all the time. I've even had the car into service and replaced the plugs and coil pack on the offending pot 4 but no difference. I found that after letting the start up sequence count down it's normally 6 seconds, if the EML came on after cranking (normally goes off after about 10 seconds) if I then immediately take the key out and restart again it cured the fault. I've taken it one stage further in that I do the process twice without cranking the car car i.e key in to position one wait for the oil level countdown, take the key out again and repeat, the second time crank the engine and start and no EML. I think it might be something to do with the start up procedure and the ECU possibly mixing too much fuel so triggering the EML. It never shows the fault even at being slightly warmed up. This is only my experience but I've not been able to replicate the fault since using this method. The engine seems to clear any initial choking quickly which maybe the issue.

POST 2Original post

Hmmmm.... I wonder if this might have something to do with throttle angle verification... there are sensors on the throttle housing that measure the position of the throttle plate. These numbers are compared to the requested position, and if it doesn't match a correction is performed. I wonder if a sticky throttle plate might cause this issue, especially if it's only sticky when the engine is cold?

POST 3Original post

BTW - welcome to Planet-9, a Home for Porsche Owners hoping to cure an EML fault... When you have a chance, please post an introductory message in the same forum you posed your question in - https://www.planet-9.com/forums/new_members/ And we love pictures! I'm going to move your posting (and this thread) over to the 987 section it belongs in... hang on.. we can continue there.

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