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Planet-9

Sudden onset of 997.2 engine start issue, rough idle and limp mode …

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

Discussion summary

YOUR RESEARCHSudden onset of 997.2 engine start issue, rough idle and limp mode …

Leading reported evidence

Run really rough

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

I was out of town for a week or so, and went to start it for a short drive and it was slow to start; when it finally fired, it ran really rough and then coughed and died.

Sudden onset of 997.2 engine start issue, rough idle and limp mode …
Frequently discussed work

Replace compared

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

Paying $160 for a capable scan tool is chump-change compared to one-hour of labor at dealer rates.

Sudden onset of 997.2 engine start issue, rough idle and limp mode …
Read full discussion summary

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

Read captured replies

1 matching discussions · 17 captured posts examined · 1 partial discussions

Compare 3 other evidence results

Replace compared

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

Paying $160 for a capable scan tool is chump-change compared to one-hour of labor at dealer rates.

Sudden onset of 997.2 engine start issue, rough idle and limp mode …

Run like a cheetah chasing a rabbit now

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

Cost $500 to install by my indie… running like a cheetah chasing a rabbit now!

Sudden onset of 997.2 engine start issue, rough idle and limp mode …

Use pca discount and the price dropped

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

Was able to use my PCA discount and the price dropped from $2100 to $1100 (wow) without core charge.

Sudden onset of 997.2 engine start issue, rough idle and limp mode …
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.

Replace compared

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

Paying $160 for a capable scan tool is chump-change compared to one-hour of labor at dealer rates.

Sudden onset of 997.2 engine start issue, rough idle and limp mode …

Run like a cheetah chasing a rabbit now

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

Cost $500 to install by my indie… running like a cheetah chasing a rabbit now!

Sudden onset of 997.2 engine start issue, rough idle and limp mode …

Run really rough

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

I was out of town for a week or so, and went to start it for a short drive and it was slow to start; when it finally fired, it ran really rough and then coughed and died.

Sudden onset of 997.2 engine start issue, rough idle and limp mode …

Use pca discount and the price dropped

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

Was able to use my PCA discount and the price dropped from $2100 to $1100 (wow) without core charge.

Sudden onset of 997.2 engine start issue, rough idle and limp mode …
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.

17 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 · 1 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 have owned a 2012 997.2S for about 3 months … it’s a one owner car with 92k miles, and I have loved it so far. I was out of town for a week or so, and went to start it for a short drive and it was slow to start; when it finally fired, it ran really rough and then coughed and died. Eventually went into ‘Reduced Power’ mode. It’s odd because when I last drove it, it was running great. At this point, I am not sure if I should a) buy a code reader for Porsche b) tow it to my Indie c) tow it to my dealer and risk my wallet being stolen. It feels like it may be an ECU issue and wonder if any one has ideas as to what might have caused this self-inflicted garage wound? Thanks in advance … Lovejoy.

POST 2Original post

I would suggest confirming the battery hasn't gone bad.

POST 3Original post

Thanks … turns over fine, but will put the trickle charge on it.

POST 4Original post

And after checking the battery - go to our diagnostics area and read up on the tools that we've looked at. Paying $160 for a capable scan tool is chump-change compared to one-hour of labor at dealer rates. I think anyone hanging out here looking at tech questions really should have a tool since it makes a real diagnosis - not guesses based on others' experiences - much more valuable.

POST 6Original post

It was the fuel pump . Was able to use my PCA discount and the price dropped from $2100 to $1100 (wow) without core charge. Cost $500 to install by my indie… running like a cheetah chasing a rabbit now!

POST 7Original post

Thats just so asinine… my fuel system on my MR2 was waaaaay more sophisticated than that and it cost a few hundred bucks and would support 800hp… glad you got it figured out

POST 8Original post

Yeah, I was pretty shocked at the price but didn’t have a reference point … what was (almost) worse was that there was only one OE Pump the Midwest and I sbagged it by happenstance. Thanks.

POST 9Original post

I just wonder what that part number also references with … is it a Bosch ? A friend of mine had a 360 and the pump from Ferrari was like 3k and the regular non Ferrari Bosch part number was like 500

POST 10Original post

50% PCA discount. We used to get 20%, now 13%. Shouldn't it have gone up due to inflation?

POST 12Original post

I was blown away … it doesn’t make sense. Two dealers wanted $2200 and then both were $1100 with the PCA discount. Oh well …

POST 13Original post

Are those in the tank? Shouldn’t be to tough installing

POST 14Original post

On a 911 997.2 , it’s not in the tank. It requires the engine to be partially dropped according to my indie. I paid him $700 to install the high pressure pump … so, $1,800 total less $140 core charge. The dealer wanted $3,500.

POST 15Original post

I didn’t realize that’s what was needed to be done. a great savings through the Indy . It’s getting to the point now with either of these cars to drop motors to do anything…

POST 16Original post

Yep … it was a nice car and I loved it … ended it up selling it to a friend so I could get a car w a back seat for toting grand kids. Ended up w a 2012 997.2 911S Cab. Same colors (silver/black). Both are great cars, much the same, and also quite different.

POST 17Original post

I know what you’re saying… when you sit in the seat it doesn’t feel all that different (987 vs 997). Handling is a little different but not as much as I would’ve thought. The 997 is a much better put together car tho… way more refined imo

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