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General_Lee

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    Los Angeles, CA, USA
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  • Present cars
    2003 Porsche Carrera 4S

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  1. nope it wasn't the lower control arm and the wishbone. Just put the new ones in yesterday and the clunk is still there.
  2. Hi guys I have a 2003 C4S. A few months ago it started to make a clunking noise whenever my left front wheel go over a small bump. My mechanic couldn't pinpoint where the noise was coming from. He said nothing seemed to be loose and everything is in the right place. So he suggested a new lower-control arm and wishbone, saying that the bushings might have gone bad. I am not totally convinced but I bought the parts anyway. so I went under the car yesterday with a pry bar and see if I could locate the problem. Here's what I found. There's no play in any of the suspension members. (The sway bar drop links are brand new, by the way. I just recently changed them) What I did find was that the left front axle could be moved left to right (along the axle) by about 1/4 inch. And when I pulled it towards the wheel carrier side real hard it would hit a end-stop and make a metal clunking noise. It made that same sound as if you were hitting your brake rotor with a hammer. The right front axle is rock solid, no play at all. So, intuitively, if they are not behaving the same way, then one of them has to be bad, correct? is there supposed to be any play at all in the axles when they are correctly mounted? Thanks. Dave
  3. Spent a day on the track and the noise was gone! And then it came back 5 days / 400 miles later. How annoying. So somehow the extra stress / wear / temperature fixed it but it didn't last.
  4. Thanks for all of your comments. I decided wait until the next clutch service before addressing the noise issue. It's annoying but not totally unbearable. I have an interesting observation about the oil leak. After I lost about 1 quart of oil total, and the low oil warning came on, the oil leak seems to have slowed down a bit. Down to like 2 drops per night. Is it a reliable way to tell if this is the RMS vs IMS, based on the oil level, since the RMS is in a significantly more elevated position? I just added 1 quart of oil back (which puts the dip stick measurement back to center). We will see how that goes.
  5. The noise definitely comes from outside the cabin. I could hear it more clearly with my windows down. It usually happens when RPM is relatively low, 2-3k RPM, accelerating from a stop. And when the clutch is 80-90% engaged, it would creating that noise. Usually goes away after just a quarter of a second. But one time I was able to hold everything in the same position and the noise kept going for more than 2 seconds. So I'm almost certain that it has something to do with the clutch or the flywheel. I am just wondering if someone had encountered the same problem before, so I don't have to pay somebody to do an "exploratory surgery", if you know what I'm saying... FYI, my car is my daily driver and it logged 92k miles so far. The clutch was replaced 20k miles ago, so I wouldn't expect it to go out that quickly.
  6. Sorry. Haven't finished my thoughts before I hit send by accident.. The clutch is making this low-tone squeaking noise. Very hard to describe. But when it happens the car seems to lose some torque. Could it be oil contamination?? Thams
  7. I have a 2003 C4S. Runs great for the most part but there are two issues: 1. Oil is leaking from where the transmission and the engine are connected. I got about 1 teaspoon of oil on the floor every night. I suppose this is because of a bad RMS. 2. Clutch is making noise. It happens when the clutch is almost fully engaged. The noise goes away when the clutch The clutch, flywheel and the throw out bearing was replaced 20k miles ago. No track activities during this time.
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