28 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHNew to me 2002 C4S
Leading reported evidence
Replace assuming this work happened
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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1
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Performed · outcome unconfirmed · Original poster
Therefore, we increased the probability that the ISMB had been serviced at some point at the time when the trans was replaced -- assuming this work happened after this failure mode became known (I wish I knew what year the ISMB problem became widely known).
Leading evidence: 'Replace assuming this work happened' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'flat-fix has hardened' (1 discussions; 0 report identifying it and 1 suggest it). 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 performed work without a confirmed outcome
1
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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
Worst thing on the PPI was brakes were only in fair condition, but the seller then replaced rotors/pads without charge.
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 suspect a cause
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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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Suggestion · Original poster
So I'd love to find one where I can disconnect the 6-CD changer and then use that connection to a phone.
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Suggestion
In my direst testing carried out with 32 different engines, this fitment has in 100% of the cases resulted in GREATER oil volume to the engine internals than with the stock arrangement, as long as someone follows the directives on which oil filter is recommended for the IMS Solution.
Discussions that performed work without a confirmed outcome
1
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Performed · outcome unconfirmed · Original poster
Therefore, we increased the probability that the ISMB had been serviced at some point at the time when the trans was replaced -- assuming this work happened after this failure mode became known (I wish I knew what year the ISMB problem became widely known).
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.
28 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: 20261026T072535Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hello Folks, thought I'd make an intro. Picked it up last week, 80K miles, absolutely in excellent condition, like brand new. Options include full leather, litronics, Bose system, etc. Somebody took really , really good care of it; interior and exterior are essentially flawless. Worst thing on the PPI was brakes were only in fair condition, but the seller then replaced rotors/pads without charge. Unused tool kit, owner's manual / docs are all intact, it really needs nothing except I will miss bluetooth until I get that corrected.
I did lots of research, even still have my Excellence magazines from 1997-2004 so I had a couple dozens articles on 996 to help. Is my 6th P-Car since the first one; I'm coming off of a 968 but keeping it.
My initial target was a C2, but then my heart went all the way to the C4S. The hard requirements were: coupe (no cab, no targa), AWD, Tiptronic, and color is important to me: no black, white, or red, and black interior kills the deal. Been planning this for almost 2 years, then the past 2-3 months searching in earnest and this one came up right here in San Diego -- I am so hesitant to buy remotely -- fly there? Ship the car? Hmmm...
It lived around Pasadena, La Canada its whole life -- if anybody knows this car from the past I'd be very interested to get in touch.
It is really an unbelievable car, handling is something else compared to the 968 which is really more of a GT car (but they are also very special cars and going up in price). So after 11 years, I am back in a 911 (drove an '82 SC Targa for 10 years). The exterior design of the C4S is just gorgeous, spot on, and no "whale tail thingy" which I really dislike.
So.... hello everyone, thanks for letting me join in, I'll be asking questions and hopefully avoid writing annoying things. I spent some weeks reading past things on the forum has been very valuable.
My wife says: "This isn't a car, this is a machine". It is really that good, we love it.
Roland
------------------------------------------------------------
The view other drivers better learn to get used to:
A couple of miles from home, so there are plenty of twistys nearby so I can learn to drive this thing which will take some time.
The herd: 1989 Vanagon Syncro, the 1993 968, and the C4S. All 3 are silver with grey interior which is kinda cool. But in total I have 20 CV boots to maintain!
Glad you got what you wanted. Looks like a nice sample.
I would accept no black, silver, gray. Had to have the 'whale tail thingy', no tip, no AWD, and no 3 spoke wheel.
There's a 996 out there for everyone.
Congratulations, and welcome to the fold. A great write up, and pictures in your intro post? I'm sure you'll fit right in.
The graphite gray interior looks especially nice.
Thanks all for the welcomes and support. Now that it is finally here and all is well, and I played with it for the weekend, and the anticipation has turned into appreciation, maybe the sleep tonight will actually be a bit more restful -- except that the excitement continues!
I realize now I should have included some "next steps". Stuff I need to do:
- Get a 2nd key, it only came with one.
- Find the cabin air filter and check it.
- Test the spare tire air compressor
- I already went to the Porsche Dealer to get past maintenance records. As opposed to the usual sound advice, this car came with very few past maintenance records.
- Get and OBDII Bluetooth transmitter and find a mobile app.
- Buy or make a couple of plugs for the 2 holes for license plate on the front bumper cover. I will run without the front plate.
- Get the clear turn signal lenses -- this isn't for me, this is for the benefit of the 996 community.
- Get updates to some maintenance products: leather care, the "waterless" spray cleaner for touch ups, etc.
- Bluetooth radio options. I am not sure I need the phone function, but will need better music sources. So I'd love to find one where I can disconnect the 6-CD changer and then use that connection to a phone. Perhaps this approach only provides the Aux connection -- may have to live with that, but it isn't really such a good solution (did that on the Vanagon).
- License plate frame.
- Investigate the motor mounts -- I've been reading that subject on the forum, and it is possible my exhaust tips are sagging. But the PPI should have picked that up somehow.
Roland
Up until now no mention of the IMS bearing.
Bravo to all and welcome to you.
I've got clears but to buck the trend I've been thinking
of running the pumpkins.
If you want to part with them say the word.
What's that?
No,actually. The IMS bearing status is unknown. Although there was much learning and research in the process. I probably didn't want to write about it fearing responses that would create even more fear, uncertainty, and doubt (guilt?). But...... there are several factors involved which I'll try to describe below.
The situation: The Tip transmission is a remanufactured one, no cosmoline, no serial number, or anything on it. The Indy said that the serial number is applied upon installation with a remanufactured Tip and apparently that didn't happen. The aging (dirt, corrosion) is not the same as the rest of the stuff under the car. It is also very clear that the engine and transmission have both been removed at some point, the mounting bolts and stuff are marked up presumably by sockets. And consulting with my Indy we both could not think of a failure (except IMSB) that might cause this removal. Its a Tip so no clutch to service. Therefore, we increased the probability that the ISMB had been serviced at some point at the time when the trans was replaced -- assuming this work happened after this failure mode became known (I wish I knew what year the ISMB problem became widely known). I was under the car also for close to 1/2 an hour inspecting while it was up on his lift.
There is essentially no sign of oil in the joint between engine and trans. There is a little dark material (an ancient seep of oil perhaps) no wetness, almost solid, fully covered with dirt and not recent.
The estimate to replace the bearing is $4,400+ parts and labor. I was told that the C4 Tip cars require removal of both the engine and transmission at the same time, and then they have to split after removal -- I have yet to confirm this, so please speak up if anyone knows. This shop does only the LN engineering double row replacement for all cars simply because of the great track record for that part. Everything I am describing was all in consultation with the founder/owner (John) who drives a 996.1 with over 200K miles and has been a highly regarded shop here in San Diego for over 40 years.
I kinda like the roller bearing (is it EPS?) and don't like the oil fed solid bearing from Raby, nor the pressure fed bearing cover from Pedro. Mainly I can't see tapping into the oil lines unless the engineering for these taps included analysis of oil pressure under various RPMs. I don't want the oil pressure reduced for other needs and don't want "new oil lines and stuff" routed around the engine. And I didn't see this kind of engineering going into those products. The solid bearing from "The Solution" might be good, but I would want to know that the materials and tolerances are all up to Porsche standards.
And then... what about the advice of change oil frequently and drive it like a Porsche. This seems to make more sense if the OEM ISMB grease cap / cover has been removed, else I can't see how these actions would increase the probability of getting oil to the bearing.
And then there is the other advice:
1. Tips fail more because they are probably driven by gentle drivers who don't get the RPMs up to splash / move the oil. I've seen no data or explanation to support this claim and would only make sense if the OEM bearing grease shields have already deteriorated. And I've not seen any data that indicates if the grease shields fail more rapidly in low or high RPM cars.
2. I think LN engineering said they've shipped something like 17,000 units, so what about the other 80,000 cars that haven't been retrofitted -- many of them will go on without ISMB ever failing.
So yeah, it isn't the most comfortable situation to be in. Indy advice is to replace the ISMB when the trans has to be removed for some other reason.
For now I am going to drive it. I know it is a $20K risk, but $4,400 insurance is a really high rate when there are signs the bearing might have been serviced.
And then, to confuse even more, I went to the Porsche dealer to get the maintenance records. And there were exactly 0 (zero) entries for the life of the car. This suggests it was all handled by Indy shops.
It is a very confusing car -- it is in such excellent condition overall, I think there is some probability that this car had some special handling or some special caretaker. The visible flaws, really, are a barely visible stone chip, a small scratch down low on the front spoiler, and 3 little knicks on the plastic bezel for the ignition key. That's about it. The rest of it is perfect and like brand new. The engine has a very mild layer of dust, almost like it has only 10K miles or something. I didn't even know it was this good until I got it home and did some "relaxed" further inspection and learning the systems.
So, how does this happen with 80K miles? I can only come up with one scenario: for example it was the car of a Porsche dealer's family member and they never charged for the services performed. Or..... what have you, let's be creative. This part I hate, bought all other Porsches knowing pretty well what its history was.
I just don't know. So I am going to drive it, and see what more I can learn, and not panic and rush into something.
Any guidance would be much appreciated.
Roland
I don't actually KNOW this, but I would highly doubt it. Removal of the front shaft is straightforward. Remove of the tip trans is not much diff than the manual. Maybe some cooling lines, and cable connectors, etc.
Cool! Paraphrase as you will,don't forget the bravo!
If you want to sell the ambers I'm first in line
Arctic silver rocks! Grey interior not so much! IMO
I did that work for 7+ years before any of you even knew the IMS Solution existed. This is why we exclusively pull oil from the spin on filter adaptor, and no where else on the engine. I have tried every other location, and all had caveats, except this location.
With my IMS Solution there's no "tapping in" to any line, or existing orifice on the engine. The fitment is created by the installation of the specially manufactured spin on filter adaptor that routes just filtered oil to the IMS Solution.
In my direst testing carried out with 32 different engines, this fitment has in 100% of the cases resulted in GREATER oil volume to the engine internals than with the stock arrangement, as long as someone follows the directives on which oil filter is recommended for the IMS Solution. You read right, this alteration increases oil flow, even though the IMS Solution uses 2cc of oil per minute, when measured at 100C.
The IMS Solution was not a haphazardly developed component. I did all of this test work personally, and spent 1/4 of my life with this one product. If you have questions, direct them here. If you have assumptions, please clarify those before posting. Thats what I am here for (the only damn reason).
Thanks about the Vanagon. The Syncro Vanagon model has factory AWD like the C4, same viscous coupler technology. And yeah I love it, its a keeper. But with that and the 2 Porsches I have 20 CV boots to maintain! Yuk.
Way more expensive than you are probably expecting... Not the key as much as the dealer programming.
Super easy... Up next to the battery on passenger side. Filters available on Amazon.
More likely the flat-fix has hardened... replace that as well. And with all no-spare-tire Porsches, a AAA+ membership is worthwhile.
If you don't have good records, make sure you get your fluids changed (engine, transmission, brake fluid for sure, probably coolant as well). Also, a preventive maintenance change on the water pump might not be a bad idea. Also a relatively inexpensive and easy DIY job. Spark plugs too. Check coil packs for signs of cracking.
www.bumperplugs.com
.
iSimple tranzit blue (
here
here
) is a good option. Works with the OEM MOST radio, fairly inexpensive (under $100), bluetooth phone and streaming audio. The other option is the Dension system, which is WAY more expensive, WAY more complicated, and IMHO a huge pile of ****. Yes, I had one.
PPI's miss all kinds of stuff. OEM style motor mounts are very likely shot, are fairly inexpensive and easy to change yourself. You can also buy more expensive 'high performance' semi-solid motor mounts, but the OEM ones at about $180/pr will really improve shifting, handling, noise/vibration/harshness.
I agree... If you want much
cheaper
insurance, buy an IMS Guardian Jr. magnetic chip detector if you can find one. It's one of Jake's best products IMHO, but he doesn't promote it and I'm not sure he even sells it anymore.
Early warning for IMS bearing failure.
my my parents had an '87 Wolfsburg Vanagon. Replaced it with a '90 auto trans. My dad still drives it. At some point, I will inherit it. Thought about dropping a 996 tip motor and trans in it ...
Great cars though.
I checked this car out when it was still on the lot and I thought it looked nice and well taken care of. Glad you got a car that you like and I envision many years of driving pleasure ahead for you.
Cheap, knock- off IMS kits killed the Guardian demand. Until a distributor will order at least 150 units, we won't be making any more Guardians.
I dont see that happening. See what cheap crap does to the market?
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