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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHnew member 1999 porsche 3.4l need some info
Leading reported evidence
Repair gearbox shift & sound o.k
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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Discussions that performed work without a confirmed outcome
1
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Leading evidence: 'Repair gearbox shift & sound o.k' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Repair gearbox shift & sound o.k' (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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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.
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1
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Suggestion
If you really want to use Rennlist to it's fullest, post your symptoms and let the engine internalists around here start walking you through the troubleshooting steps.
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
If you really want to use Rennlist to it's fullest, post your symptoms and let the engine internalists around here start walking you through the troubleshooting steps.
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.
Rennlist: 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: 20261027T011819Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hi there, I just bought a 1999 3.4l porsche 996 with 35,000km, 6 speed, very nice car, my first sports car, got it cheap. Tranny was sent to get rebuilt, when the customer got it back, it misfired, ran rough, so I bought it as is. Brass in the oil , I also delieve the IMS was never done, im taking the motor and tranny out, does anyone know who and where you recomend to buy my parts for a complete rebuild , and the IMS bearing that everony taks about, thanks mike
Slow down. You can really screw things up if you approach this like any other engine. The M96 is very unique and peculiar. The fact that you have identified the metal as brass is pretty telling that you may be in over your head.
If you really want to use Rennlist to it's fullest, post your symptoms and let the engine internalists around here start walking you through the troubleshooting steps. It can save you $1,000's.
Out of curiosity, how much did you pay?
Welcome, lots of knowledge here on this forum. For starters here is a link for very useful Parts breakdown, part number listings and for assembly diagrams.
http://www.autoatlanta.com/porsche-p..._911_parts.php
With the needed part number you can basically shop around to various vendors because there is an infinite amount of them and choose one who has the best price. Thats what I do. As far the as the IMSB replacement there are vast amount of options and features so it all depends on how deep your pocket is willing to go and what you would want to do with your Motor.
1. Wash the 'brass' in gasoline and dry the debris on a paper towel.Then send us the photo of it. Slakker is correct - it ain't brass ! And there are well over 20 Modes of Failure unrelated to the IMSB.Hopefully yours is a double row ,so less to be concerned about.
2. Before you tear into it, let's try to diagnose the misfire. What does the Durametric 'say' ?
3. Does the repaired gearbox shift & sound O.K. ? I ask because if that has problems also the car may be just a roller.
There is lots to learn about this engine.Flailing can be very expensive.Which is why we help each other.
These guys (if you listen to them) will help you diagnose what happened to your motor. THAT will determine IF it can be repaired....... if it cannot, you will spend stupid $ trying only to have paid a big tuition bill learning what these guys already know...........
You are lucky. These guys want to help and are the best there are on the subject matter.
That is the best advice I can give you.
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