krafty

GIESE639: I have no doubt the accredited Porsche racing shop (and Porsche mechanic) performed the repair perfectly. Yes, he said he has the price down due to the number of repairs they have performed in recent months.

mjberning

27638 Miles, No IMS Failure

albaran

Replaced the IMS on my 2001 C4 Cab with tiptronic at 95000 miles. The one the removed was in perfect shape.

Akshun12

A Porsche mechanic told me yesterday that Porsche fixed the IMS issue in 2003 and depending upon the manufacture date of the car it may not have the bearing issue at all. This was the first I'd ever heard that. Is there any truth to this? I thought the issue was completely resolved in the 997.1.

Flat6 Innovations

This guy has no clue.. 2003 was right I the middle of the worst IMS bearing problems. This is confirmed by the Class Action suit, which covered (some 2001) 2002-2005 engines.

Nothing was "fixed" in 2003.

I hope you don't allow this guy to work on your car. He is clearly less informed than most enthusiasts on these forums.

ZuffenZeus

What I've understood to be consistent with the IMS failures is that they continued to plague the Porsche 911 until the 2009 (997.2) model.

steerp1ke

Not sure of the answer on this one, but love that avatar.

pcar1

Guys, I've got an'03 C2 6-speed w/ 105k miles on it, IMS/RMS replaced by previous owner and it's run perfectly in the last 1.5 years/6k miles of my ownership. I've noticed in the last thousand miles or so a slight engine knock (sometimes) on throttle tip-in (only pump shell premium fuel), along with a bit more oil consumption (~3/4 quart redline synthetic every 1k miles or so) and just this last weekend I heard a modest tick-tick-tick from the engine. My guess is the latter *may* be a lifter collapse, but not sure. I've spoken to a couple independent shops and they, understandably, can't confirm, but are not particularly concerned unless there were more pronounced symptoms. It's a 'weekend car' and driven spiritedly, but not dogged by any means. Any ideas?

ZX9RCAM

Prior to suffering "d chunk", my 99 with 125k miles would use less than a quart in 3000 miles.

gnat

I would say those unconcerned shops that can't confirm what it is are places you should avoid. Find a good shop that knows water cooled Porsches. They'll know about bore scoring and how to diagnose it without removing the motor or some other silliness.

Recent thread on the subject with good info: https://rennlist.com/forums/996-foru...king-help.html

While there are other things that can cause your symptoms, burning oil and ticking is commonly signs of scored cylinders. If that is the issue then you need the cylinders relined and new pistons, but there are also people that have successfully kept driving such cars for long periods of time after getting the diagnoses (but that's something that will be determined by your tolerance of risk after talking to your shop).

pcar1

gnat, thanks for the advice.

I should have clarified: the car has not yet been in to be seen for these symptoms by a respected local shop -- they've so far offered a couple (of the typical) scenarios to the cause only. My next step is to get it in to be properly diagnosed in the flesh. Let's hope it's not scored cylinder(s)!

6L6

I currently have 65,000 miles on my 6-Speed, 2002 Carrera Cabriolet. For peace of mind I had the IMS changed at 48,000 miles. The car has been fantastic to own and drive for the past 14 years! The only real problem I've experienced is a couple of power window failures.

FWIW, another Porsche mechanic (not my own) mentioned that IMS failures were much more prevalent in Tip cars than manuals. Any truth to this?

Here's a couple of recent shots of my machine taken on CA Highway 1 in Pescadero. LOTS of top down days where I live!





Bill

ourkind

2004 C2 3.6 tiptronic 55k km Right hand drive made for Australia - LN IMS Solution (sleeve bearing with its own oil feed) installed. I'm the 3rd owner, not tracked so I was told. So far do good

Esfoad

Mine is an '02 Cab with 37K miles. Bought it in August. I don't think the IMS bearing was touched and it was not mentioned in the transaction. So I'm gonna get it done before I put her away for the winter. My dealer, Paul Miller Porsche in Parsippany NJ wants to quote me on the LN bearing. I already have a quote on the IMS Solution from another Porsche specialty shop in the area. Is there a preference on which replacement bearing is the best one?

jhbrennan

In my opinion, other than cost considerations, the IMS Solution is best...but I would want a certified installer to do the work. You can check who the certified installers by going to the IMS Solution website.