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david44tn

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About david44tn

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    Member

Profile Fields

  • From
    Tennessee
  • Porsche Club
    PCA (Porsche Club of America)
  • Present cars
    2001 Boxster
  • Former cars
    914,356
  1. Before finally adjusting the muffler support, I also suspected a problem with the dual mass flywheel. What suggested the flywheel has no effect on this was after reading posts from others with this symptom replacing their flywheels and sometimes having no change in the problem. Also, with a flywheel imbalance I suspect the vibration would be felt without the vehicle in motion, my Boxster had no pronounced vibration when setting still with the engine accelerated to 3000-3200. Although I am sure replacing DMFs have repaired some vibrations. What I have found is this symptom is usually only on e
  2. At this point I'm not sure if adjusting the inlet pipes is necessary, although you may try doing that after adjusting your muffler. After adjusting the muffler, loosening and then tightening both the clamps on both of the inlet pipes would let the pipes "self adjust" to the different position.
  3. I have a 2001 Boxster with the same symptoms as stated in the earlier posts. My vibration starts on acceleration around 3000-3200 in any gear and quickly goes away after the engine is out of this range. The vibration cannot be felt in the shifter or clutch pedal. It is very brief and can be felt through the seat, while accelerating during normal driving. When accelerating hard, the vibration is rarely felt (I suspect because the range passes by quickly). Deceleration is very different with the vibration much more pronounced in the exact same rpm range, and quickly goes away, starting around 32
  4. I have a 2001 Boxster with the same symptoms as stated in the earlier posts. My vibration starts on acceleration around 3000-3200 in any gear and quickly goes away after the engine is out of this range. The vibration cannot be felt in the shifter or clutch pedal. It is very brief and can be felt through the seat, while accelerating during normal driving. When accelerating hard, the vibration is rarely felt (I suspect because the range passes by quickly). Deceleration is very different with the vibration much more pronounced in the exact same rpm range, and quickly goes away, starting around 32
  5. This is very interesting and food for thought. At this point, since the complete exhaust system, muffler, cats, etc. are all suspended by the rear transmission/motor mounts, when removing the muffler some suspended weight is removed from the rear mounts. Maybe with soft or defective mounts, removing weight such as the muffler, will raise the rear of the engine/trans assembly up, keeping the mounts from being at a limit, therefore not transmitting a vibration? Just a thought.
  6. I have a 2001 Boxster with the same symptoms as stated in the earlier posts. My vibration starts on acceleration around 3000-3200 in any gear and quickly goes away after the engine is out of this range. The vibration cannot be felt in the shifter or clutch pedal. It is very brief and can be felt through the seat, while accelerating during normal driving. When accelerating hard, the vibration is rarely felt (I suspect because the range passes by quickly). Deceleration is very different with the vibration much more pronounced in the exact same rpm range, and quickly goes away, starting around 32
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