7 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHmisfire strange happening
Leading reported evidence
Check ignition coils
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
Firstly check the coil packs but ultimately, it could be one things or several.
Leading evidence: 'Check ignition coils' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check ignition coils' (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 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
Others more knowledgeable will probably be along shortly but something to check would be cracked ignition coils.
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
It's not the cheapest or easiest job to replace the cam solenoid on an early model im afraid .
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
cam timing is in essence in the wrong position which will cause a misfire or rough running on 1 bank .
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.
7 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: 20261027T033922Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hi I have a 996 1998 3.4 Carrera, weird thing is happening, When I turn on the ignition and start the engine, it seems to misfire pop and all sorts, but if I turn off the ignition and turn it on again and start the car it seems to clear, I drove it yesterday and it drove fine until I had a misfire and the engine light came on, I put my snap on verus on it and came up with misfire on 4 5 and 6 so one bank. It also had 2 unidentified codes, with ne explanation, not sure what that is all about.
Any help please
Paul
Others more knowledgeable will probably be along shortly but something to check would be cracked ignition coils.
They go through a great many heat cycles and crack with age. Eventually moisture gets in causing misfires. Obviously spark plugs would be another thing to check. Both are more likely to show symptoms the colder and wetter it is
The issue seems to be just bank 2. I'd have thought a coil/plug problem would be more sporadic. The fact it's just bank 2 would lean me toward thinking variocam solenoid, lamdba sensor or something else specifically related to that bank.
Thanks, Good shout, I have seen a Lamda sensor fault a few days ago but it did not come back again, would this make it misfire on all 3off that bank?
Paul
Hi,
It could be so many things.
Firstly check the coil packs but ultimately, it could be one things or several.
In my case, a suspected fuel pump was an eaten wire by a rat.
I was worst cares, so engine and box out, fixed, every part changed whilst there and £6.5k later, car is the best it's ever been.
Take it to an Indy and they'll investigate and fix
The unidentified codes should have a P code with a number .. if you can post those it might help .
You have an issue from cold on first startup i take it .. as such lambda sensors are not active at that point as they have to be preheated .. about 2 mins before they are active and the control unit actually takes notice of them so thats an unlikely issue unless problems after that heating period .
.
Most obvious is as been mentioned .. some sort of issue with the cam timing solenoid . normally they just pack up but its not unreasonable to say yours on that banks has an oil restriction issue when cold .. cam timing is in essence in the wrong position which will cause a misfire or rough running on 1 bank .
It's not the cheapest or easiest job to replace the cam solenoid on an early model im afraid .
This is a source reference. Confirm exact model applicability in the original material.
