Clutch problems-vibration-shuttering

[waynes986]

I borrowed a buddies boxster s today and it was driving fine initially as I have driven it before. Later in the day while driving and shifting I noticed that there was a strange type of pulsating in clutch pedal when releasing the clutch into or out of gear. when engaging a gear it feels like its resisting and pulsating back at you versus just freely letting go. I've driven many boxsters and 996 so I know its not my driving. The car does shift fine but when you let go of the clutch it always feels that way with engine on or off. Car only has 55k miles on it... What do you guys think?

[Jager]

Does it with the engine off... Maybe the hydraulic system needs to be bled. I would try that first. I'm thinking it could also be throw-out bearing not sliding on the spline shaft smoothly, or bad slave cylinder, or bad master cylinder??

[heliguy]

Mine just started doing this, juttering. It doesn't happen with the engine off. Does anyone have any ideas?

[oc-boxster]

Mine was doing the same thing right before I replaced it. Mine was caused by a cracked out of line finger on the pressure plate

[heliguy]

My clutch pedal feels a little softer than it used to also.