vibration when stopping

[Chapin1]

Hi, I have a 2004 Boxster 2.7L manual that has done 83000km.
As I stop the car stop at a set of lights, or intersection etc, and put in the clutch , I notice a vibration, or shudder for a second (seems to come from the engine), but there is no RPM change. Does anyone know what this might be. The car goes fine in every respect, and the shudder is not there 100% of the time, but frequently.
thanks

[jc986]

Originally Posted by Chapin1

Hi, I have a 2004 Boxster 2.7L manual that has done 83000km.
As I stop the car stop at a set of lights, or intersection etc, and put in the clutch , I notice a vibration, or shudder for a second (seems to come from the engine), but there is no RPM change. Does anyone know what this might be. The car goes fine in every respect, and the shudder is not there 100% of the time, but frequently.
thanks

Mine does that too, I have a 97 2.5, sometimes same thing, but when mine does it I do notice a slight dip in RPMs for just that moment. I read somewhere else that some boxsters do that. I don't know if it's the same thing you're experiencing Chapin1, but if it is, form what I've read and experienced, there is nothing to worry about.

[Chapin1]

I've just found the problem - it is the air con!