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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHIMS & Intake Lifter - HELP!!!
Reported or suspected cause
replacement of the intake lifeter
Reported cause
No successful repair reported for this finding.
1
Identified cause
0
Suspected cause
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Reported fixes
Read evidence and context
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Discussions that report identifying a cause
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Reported cause · Original poster
They have told me this new issue is replacement of the intake lifeter on 1 bank and they want another $3600.
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Suggestion · Original poster
Since they made the major IMS repair they have not been able to get the car to run correctly which, again, was not a problem going in and was never a problem in any of their diagnosis.
Leading evidence: 'replacement of the intake lifeter' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'replacement of the intake lifeter' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Repair they have not been able' (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.
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Discussions that performed work without a confirmed outcome
1
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Performed · outcome unconfirmed
My point is nothing was probably wrong with the IMS in the first place and the Indy probably changed the RMS while working on the clutch.
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
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Performed · outcome unconfirmed · Original poster
I drove the car every day for well over a month and it ran beautifully.
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Discussions that performed work without a confirmed outcome
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Performed · outcome unconfirmed · Original poster
They said they thought the same thing but they tested the timing and it tested right on.
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
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Performed · outcome unconfirmed · Original poster
They said they thought the same thing but they tested the timing and it tested right on.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Repair they have not been able
No successful repair reported for this finding.
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Reported fixes
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Unsuccessful attempts
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Discussions
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Discussions that contain suggestions
1
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Suggestion · Original poster
Since they made the major IMS repair they have not been able to get the car to run correctly which, again, was not a problem going in and was never a problem in any of their diagnosis.
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Suggestion
If the lifters are truly clogged with metal debris you are really faced with taking the engine out of the car and apart and cleaning it thoroughly and of course replacing any other items that need replacing.
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Suggestion
Having just replaced a stuck lifter on my car, it does not sound like you have the same problem (I had misfires and occasional rough idle, car would run fine in between).
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Suggestion · Original poster
Since they made the major IMS repair they have not been able to get the car to run correctly which, again, was not a problem going in and was never a problem in any of their diagnosis.
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.
21 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: 20261027T000231Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I'm new to the world of Porsche. About 6 weeks ago after a lot of research I bought a 2002 Porsche 911 as is. I drove the car every day for well over a month and it ran beautifully. I started noticing a tiny little oil spot in my garage and suspected the dreaded IMS problem. I took the car into a local Indy for a top down service / diagnosis. When I took the car in it was running perfectly.
They did diagnose the very beginnings of an IMS problem due to some shavings found in the filter. While they were removing the transmission, they suggested replacing the clutch which did have some wear but was operating perfectly. Again, not a necessary repair at all but I authorized proceeding.
They called me today stating they put everything back together but now the car isn�t firing well which was not at all a problem that was occurring before bringing it in nor was it a problem they diagnosed during their extensive service. Since they made the major IMS repair they have not been able to get the car to run correctly which, again, was not a problem going in and was never a problem in any of their diagnosis. They have told me this new issue is replacement of the intake lifeter on 1 bank and they want another $3600. I am thinking I'm getting a snow job and this newest problem, which didn't exist before, should be there's to resolve. Any opinions from the group? Thanks in advance.
What is the year and mileage of this car you say you have.
Has the un-named shop done a lot of IMS replacements?
I think they screwed up your cam timing
It's a 2002 C4 with 67k miles. They have done many IMS replacements. They claim they drained the oil to do the IMS and after putting everything back together it's now showing the intake lifter issue. They did a number of tests showing everything else was fine (timing, compressions, etc). They told me they believe a metal shaving could be clogging it. Does this sound legit?
Speculation like this is not helpful.
The question is how did the lifter go bad. Is that something that could be damaged during an IMS replacement bearing? Is this a common problem (not one I've heard of...)?
They said they thought the same thing but they tested the timing and it tested right on. The claim is the lifter was weak and when the oil was drained to do the IMS job it would not re-fill.
Having just replaced a stuck lifter on my car, it does not sound like you have the same problem (I had misfires and occasional rough idle, car would run fine in between).
If it's rough through all regimes and hard to start, I would also expect timing.
Best of luck
The only question I saw was 'any opinions from the group?' I gave my opinion. A drip of oil for the longest has been mostly related to rms not ims . My point is nothing was probably wrong with the IMS in the first place and the Indy probably changed the RMS while working on the clutch.
Lifters do get clogged with dirt but not overnight from a oil change. OP authorized the shop to replace IMS bearing & clutch & should not pay until that service is completed. (car should be running as well or better as it did when brought in) Do not consider any additional repairs until the 1st is completed. Go to the shop to verify cam timing is set properly & listen to the bad lifter.
Check engine light was NOT on when I brought the car in. Not sure if it came on after they completed ims and clutch work. They're going in to see what caused lifter problem. If on them they will repair at no charge. If not it will be on me.
Its not uncommon to have more than one issue occurring.. Remember that if any material makes it past the oil filter from a failing IMS bearing that it will go directly to the lifters then clog them.
But get a second opinion~
If the lifters are clogged they are clogged with probably metal bits and they are to put it bluntly toast.
The cost of new lifters vs. the cost of going back in the engine over and possibly over again is small potatoes.
You are safest if you just replace the lifters. 'course, there's a concern that the high pressure/clean side of the oiling system might still have something in it and this could ruin new lifters shortly after the engine is fired up again.
The metal debris could also result in lifter bore scoring which can bled vital oil and oil pressure away from the lifter and it may not ever work 100%.
If the lifters are truly clogged with metal debris you are really faced with taking the engine out of the car and apart and cleaning it thoroughly and of course replacing any other items that need replacing.
Sincerely,
Macster.
Did you hear it run? Is it very noisy?
Maybe it is not running right because the crank sensor got damaged when they put the flywheel back on the crank flange? It is easy to hit it with the flywheel.
Great forum with tons of knowledgeable folks out there. Thank you for all the insight. End result the Indy and I worked out a significantly discounted price for the work and parted company on good terms. At the end of the day, got the ims/rms, clutch and lifters repaired. With peace of mind, now it's time to just enjoy my 911!!! Thanks everyone.
