6 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH2000 996 3.4 Misfire below 2000rpm
Reported or suspected cause
variocam
Reported cause
No successful repair reported for this finding.
1
Identified cause
0
Suspected cause
0
Reported fixes
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 report identifying a cause
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.
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
Well looks like I may not have dodgy Variocam Soleniod, took car out today and check engine light came on, put car back on drive and re-checked all my coil plugs, furthest back coil on LH side of engine by the coolant overflow came off the moment I touched it.
Leading evidence: 'variocam' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'variocam' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Check coil plugs, furthest back coil' (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.
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 · Original poster
Well looks like I may not have dodgy Variocam Soleniod, took car out today and check engine light came on, put car back on drive and re-checked all my coil plugs, furthest back coil on LH side of engine by the coolant overflow came off the moment I touched it.
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.
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 · Original poster
On a related matter I when I replaced my ignition coils with Part no 99760210700 they are a different shape from my old ones and were delivered with new bolts to fit them with.
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 · Original poster
I have replaced the ignition coils (BERU ones) but it has not made any difference.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Check coil plugs, furthest back coil
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
Well looks like I may not have dodgy Variocam Soleniod, took car out today and check engine light came on, put car back on drive and re-checked all my coil plugs, furthest back coil on LH side of engine by the coolant overflow came off the moment I touched it.
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
On a related matter I when I replaced my ignition coils with Part no 99760210700 they are a different shape from my old ones and were delivered with new bolts to fit them with.
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 Club GB: 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: 20261026T152433Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hello
My 996 3.4 has developed a misfire on one of the right bank cylinders, it only happens between idle and 2000rpm. Below 2000rpm if I accelerate hard the engine feels very lumpy/hesitant though I rarely get the check engine light flashing. Above 2000rpm the engine is sweet.
I have replaced the ignition coils (BERU ones) but it has not made any difference. However I did notice that the rubber boot that fits over the ignition coil elect plug on cylinder 6 is badly split and I am concerned that this has degraded/corroded the contacts???
Any ideas?? Is this part of the engine loom easy to replace/repair????
It sounds like you might have a Variocam actuator failure. This would exhibit these symptoms.
It normally sticks and causes poor running at low or high rpm, depending on where it sticks.
Diagnostic check will help. You can manually check it too.
It's quite a job to replace, requiring exhaust and cam cover removal.
kr Lee
Thanks for the advice I have booked it in with my local specialist to get it checked out.
On a related matter I when I replaced my ignition coils with Part no 99760210700 they are a different shape from my old ones and were delivered with new bolts to fit them with. However my original ignition coil heatshield does not seem to fit very well and is badly corroded. I have seen 997 version that seems a better shape, will it fit my 996???
Thanks again Lee
I had similar issues some years back. found it was the variocam. investigated a possible diy but soon became evident it was a garage job. covers for ignition coils sell for around £27 each.
Well looks like I may not have dodgy Variocam Soleniod, took car out today and check engine light came on, put car back on drive and re-checked all my coil plugs, furthest back coil on LH side of engine by the coolant overflow came off the moment I touched it. Checked all the others all good. Car now drives back at its amazing best. Clearly finger trouble!!!
On the downside I did notice my exhaust silencer box seems are starting to fall apart, looks like I need to find some nice shiny new ones.
Thanks to Lee and Devans for your help.
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