Planet-9

CEL and vibration / spluttering?

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

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YOUR RESEARCHCEL and vibration / spluttering?

Leading reported evidence

Replace sparks as well whilst i was dirty

Performed · outcome unconfirmed

No successful repair reported for this finding.

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Reported fixes: 0
Unsuccessful attempts: 1
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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
Replaced all sparks as well whilst I was dirty.
Original post Read captured discussion
CEL and vibration / spluttering?

Frequently discussed work

Check articles here

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
HOwever if you don't know where they are located, check the articles here and on the Cayman REgister for illustrated how-tos.
Original post Read captured discussion
CEL and vibration / spluttering?

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Leading evidence: 'Replace sparks as well whilst i was dirty' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check articles here' (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 · 5 captured posts examined · 1 partial discussions

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Check articles here

Suggestion or failed attempt

No successful repair reported for this finding.

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Reported fixes: 0
Unsuccessful attempts: 1
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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
HOwever if you don't know where they are located, check the articles here and on the Cayman REgister for illustrated how-tos.
Original post Read captured discussion
CEL and vibration / spluttering?

Replace offending coil packs and spark plugs

Suggestion or failed attempt

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 note that there has been a lot of mention of replacing the offending coil packs and spark plugs when this error code comes up?
Original post Read captured discussion
CEL and vibration / spluttering?

Replace plugs and coils are one of the easier jobs

Suggestion or failed attempt

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
Changing plugs and coils are one of the easier jobs on these cars, jack it up.
Original post Read captured discussion
CEL and vibration / spluttering?

Frequently discussed actions (4)

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

Check articles here

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
HOwever if you don't know where they are located, check the articles here and on the Cayman REgister for illustrated how-tos.
Original post Read captured discussion
CEL and vibration / spluttering?

Replace offending coil packs and spark plugs

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 note that there has been a lot of mention of replacing the offending coil packs and spark plugs when this error code comes up?
Original post Read captured discussion
CEL and vibration / spluttering?

Replace plugs and coils are one of the easier jobs

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
Changing plugs and coils are one of the easier jobs on these cars, jack it up.
Original post Read captured discussion
CEL and vibration / spluttering?

Replace sparks as well whilst i was dirty

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
Replaced all sparks as well whilst I was dirty.
Original post Read captured discussion
CEL and vibration / spluttering?

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.

5 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: 20261026T113718Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

Hi all I have a 2007 Cayman S with 80,000 miles on it. Its driven great up until today when suddenly the CEL came on (flashing) and I was feeling vibrations along with what can only be described as a low level sound spluttering (rumbling). It struggles to move off from a standing start (like its going to stall). I limped it the remaining 2 miles home (luckily I was very close when it happened). Just wondering if anyone knows what I should be looking at before I look at a big service bill? Last night I refueled at a new to me gas station - my fuel light had just come on and I went to a gas station that was cheaper then where I normally go and filled up. Not sure if that could be part of it I would hope not but thought I should throw it out there.

POST 2Original post

Just picked up a diagnostic tool from Sears and have the following error code P0305 cylinder 5 misfiring I believe Could someone assist in troubleshooting that please I note that there has been a lot of mention of replacing the offending coil packs and spark plugs when this error code comes up? I have to say I wouldn't even know where these are located on my cayman. Or where to order them from. Thank you for any and all help

POST 3Original post

#5 is the middle plug on driver (LHS). You could start by pulling the coil pack and plug and looking at them. What is the age of your plugs? Any mechanical noises from the engine like ticking?

POST 4Original post

The possibilities are: coil, plug, plug wire(not likely) fuel injector, and maybe a crank sensor, but since #5 cylinder is identified I doubt that is the problem. With 80k miles if the plugs are original I would definitely change them, and to get the plugs out the coils have to come out so they can be inspected to see if one is bad. Cracks on the outside normally indicate a defective one. Changing plugs and coils are one of the easier jobs on these cars, jack it up. pull the rear wheels, pull the splash panels off, and remove the coils and plugs. HOwever if you don't know where they are located, check the articles here and on the Cayman REgister for illustrated how-tos. Or find another member willing to help. Third option is an indy shop, and last resort is the dealer. I'm cheap, so I usually do everything myself.

POST 5Original post

Thank you Rob and Mitch I jacked her up the other day and got to the coil pack which was cracked. Replaced all sparks as well whilst I was dirty.

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