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911uk

Temperature specific misfire in 2003 targa 3.6

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4 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

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YOUR RESEARCHTemperature specific misfire in 2003 targa 3.6

Leading reported evidence

Replace thanks

Performed · outcome unconfirmed

No successful repair reported for this finding.

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Unsuccessful attempts
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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
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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

Thanks for the ideas - plugs were changed last year but not coil packs so worth changing these anyway.

Original post Read captured discussion
Temperature specific misfire in 2003 targa 3.6
Frequently discussed work

Check revealed the wiring was broken

No successful repair reported for this finding.

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0
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Discussions that contain suggestions
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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

A continuity check revealed the wiring was broken.

Original post Read captured discussion
Temperature specific misfire in 2003 targa 3.6
Read full discussion summary

Leading evidence: 'Replace thanks' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check revealed the wiring was broken' (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 · 4 captured posts examined · 0 partial discussions

Compare 3 other evidence results

Check revealed the wiring was broken

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

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 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

A continuity check revealed the wiring was broken.

Original post Read captured discussion
Temperature specific misfire in 2003 targa 3.6

Replace spark plugs and coil packs

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

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 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

Have you changed spark plugs and coil packs?

Original post Read captured discussion
Temperature specific misfire in 2003 targa 3.6

Replace these anyway

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

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 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

Thanks for the ideas - plugs were changed last year but not coil packs so worth changing these anyway.

Original post Read captured discussion
Temperature specific misfire in 2003 targa 3.6
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 revealed the wiring was broken

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

A continuity check revealed the wiring was broken.

Original post Read captured discussion
Temperature specific misfire in 2003 targa 3.6

Replace spark plugs and coil packs

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

Have you changed spark plugs and coil packs?

Original post Read captured discussion
Temperature specific misfire in 2003 targa 3.6

Replace thanks

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

Thanks for the ideas - plugs were changed last year but not coil packs so worth changing these anyway.

Original post Read captured discussion
Temperature specific misfire in 2003 targa 3.6

Replace these anyway

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

Thanks for the ideas - plugs were changed last year but not coil packs so worth changing these anyway.

Original post Read captured discussion
Temperature specific misfire in 2003 targa 3.6
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.

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

  • 911uk: 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: 20261026T194705Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi folks This problem is not proving easy to solve - any experience of similar would be very helpful. It concerns a '52 plate 3.6 targa 127K miles serviced by Porsche. Starts fine cold and runs well at operating temperature. It starts failing and misfiring then cuts out at about 50 degrees (or if you stop and try restart the warming engine). If I manage to keep the engine turning over (by car momentum or fast revs) to reach 70 degrees on the runs perfectly. If it had had a Carburettor and auto choke I would say it was sticking closed for a while. Temperature sender and crank sensor (engine out job) replaced to no effect. Some say it must be the DME but I am unsure and have had enough of expensive guesses. Does anyone have experience of this problem and it's successful resolution? Many thanks Mark

POST 2Original post

Sounds a right pain and its not something I have come across before. I would have said Crank Sensor (unsure why it was an engine out job) but if you have changed that already, most probably not that. I did have an issue where the wiring in the engine loom for the crank sensor started to break down and then eventually failed, the engine could stall but would start up again until the day it eventually died. A continuity check revealed the wiring was broken. An earth problem usually just affects the starting of the car when hot. Have you changed spark plugs and coil packs?

POST 3 / ORIGINAL POSTEROriginal post

Thanks for the ideas - plugs were changed last year but not coil packs so worth changing these anyway. I'm still puzzled why she reliably misfires to point of stalling only at this 50-60 degree crossover temperature. Anyone come across this in their 3.6 C2 or targa? Cheers Mark

POST 4Original post

Can you get a fault code read out and confirm is x1 cylinder misfire or if its an entire bank please . Also what if any codes are in the DME .

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